import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		String a = sc.nextLine();
      	String A = ("A");
		if(a.equals("A")){
        	System.out.println(A);
        }
		else if(a.equals("B")){
        	System.out.println(A);
        }
		else if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        }
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		String a = sc.nextLine();
      	String A = ("A");
		if(a.equals("A")){
        	System.out.println(A);
        }
		else if(a.equals("B")){
        	System.out.println(A);
        }
		else if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        }
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		String a = sc.nextLine();
      	String A = ("A");
		if(a.equals("A")){
        	System.out.println(A);
        }
		else if(a.equals("B")){
        	System.out.println(A);
        }
		else if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        }
	} main {
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		String a = sc.nextLine();
      	String A = ("A");
		if(a.equals("A")){
        	System.out.println(A);
        }
		else if(a.equals("B")){
        	System.out.println(A);
        }
		else if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        }
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String a = sc.nextLine(); a sc.nextLine() sc.nextLine sc String A = ("A"); A ("A") if(a.equals("A")){
        	System.out.println(A);
        }
		else if(a.equals("B")){
        	System.out.println(A);
        }
		else if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("A") a.equals a "A" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("B")){
        	System.out.println(A);
        }
		else if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("B") a.equals a "B" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("C") a.equals a "C" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("D") a.equals a "D" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("E") a.equals a "E" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("F") a.equals a "F" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("G") a.equals a "G" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("H") a.equals a "H" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("I") a.equals a "I" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("J") a.equals a "J" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("K") a.equals a "K" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("L") a.equals a "L" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("M") a.equals a "M" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("N") a.equals a "N" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("O") a.equals a "O" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("P") a.equals a "P" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("Q") a.equals a "Q" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("R") a.equals a "R" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("S") a.equals a "S" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("T") a.equals a "T" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("U") a.equals a "U" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("V") a.equals a "V" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("W") a.equals a "W" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("X") a.equals a "X" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("Y") a.equals a "Y" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        } a.equals("Z") a.equals a "Z" {
        	System.out.println(A);
        } System.out.println(A) System.out.println System.out System System.out A {
        	System.out.println("a");
        } System.out.println("a") System.out.println System.out System System.out "a" String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		String a = sc.nextLine();
      	String A = ("A");
		if(a.equals("A")){
        	System.out.println(A);
        }
		else if(a.equals("B")){
        	System.out.println(A);
        }
		else if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        }
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		String a = sc.nextLine();
      	String A = ("A");
		if(a.equals("A")){
        	System.out.println(A);
        }
		else if(a.equals("B")){
        	System.out.println(A);
        }
		else if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        }
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		String a = sc.nextLine();
      	String A = ("A");
		if(a.equals("A")){
        	System.out.println(A);
        }
		else if(a.equals("B")){
        	System.out.println(A);
        }
		else if(a.equals("C")){
        	System.out.println(A);
        }
		else if(a.equals("D")){
        	System.out.println(A);
        }
		else if(a.equals("E")){
        	System.out.println(A);
        }
		else if(a.equals("F")){
        	System.out.println(A);
        }
		else if(a.equals("G")){
        	System.out.println(A);
        }
		else if(a.equals("H")){
        	System.out.println(A);
        }
		else if(a.equals("I")){
        	System.out.println(A);
        }
		else if(a.equals("J")){
        	System.out.println(A);
        }
		else if(a.equals("K")){
        	System.out.println(A);
        }
		else if(a.equals("L")){
        	System.out.println(A);
        }
		else if(a.equals("M")){
        	System.out.println(A);
        }
		else if(a.equals("N")){
        	System.out.println(A);
        }
		else if(a.equals("O")){
        	System.out.println(A);
        }
		else if(a.equals("P")){
        	System.out.println(A);
        }
		else if(a.equals("Q")){
        	System.out.println(A);
        }
		else if(a.equals("R")){
        	System.out.println(A);
        }
		else if(a.equals("S")){
        	System.out.println(A);
        }
		else if(a.equals("T")){
        	System.out.println(A);
        }
		else if(a.equals("U")){
        	System.out.println(A);
        }
		else if(a.equals("V")){
        	System.out.println(A);
        }
		else if(a.equals("W")){
        	System.out.println(A);
        }
		else if(a.equals("X")){
        	System.out.println(A);
        }
		else if(a.equals("Y")){
        	System.out.println(A);
        }
		else if(a.equals("Z")){
        	System.out.println(A);
        }
      	else{
        	System.out.println("a");
        }
	}
}