import java.util.*;class Main{public static void main(String[] a){char c=new Scanner(System.in).next().charAt(0);;System.out.println(Character.isUpperCase(c)?'A':'a');}} import java.util.*; util.* java class Main{public static void main(String[] a){char c=new Scanner(System.in).next().charAt(0);;System.out.println(Character.isUpperCase(c)?'A':'a');}} Main public static void main(String[] a){char c=new Scanner(System.in).next().charAt(0);;System.out.println(Character.isUpperCase(c)?'A':'a');} main {char c=new Scanner(System.in).next().charAt(0);;System.out.println(Character.isUpperCase(c)?'A':'a');} char c=new Scanner(System.in).next().charAt(0); c new Scanner(System.in).next().charAt(0) new Scanner(System.in).next().charAt new Scanner(System.in).next() new Scanner(System.in).next new Scanner(System.in) 0 System.out.println(Character.isUpperCase(c)?'A':'a') System.out.println System.out System System.out Character.isUpperCase(c)?'A':'a' Character.isUpperCase(c) Character.isUpperCase Character c 'A' 'a' String[] a a
import java.util.*;class Main{public static void main(String[] a){char c=new Scanner(System.in).next().charAt(0);;System.out.println(Character.isUpperCase(c)?'A':'a');}}