import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		char p = s.charAt(0);
		String t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
		for (int i = 0; i < 26; i++) {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		}
		for (int i = 26; i < 52; i++) {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		}
		kb.close();
	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		char p = s.charAt(0);
		String t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
		for (int i = 0; i < 26; i++) {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		}
		for (int i = 26; i < 52; i++) {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		}
		kb.close();
	}

} Main public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		char p = s.charAt(0);
		String t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
		for (int i = 0; i < 26; i++) {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		}
		for (int i = 26; i < 52; i++) {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		}
		kb.close();
	} main {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		char p = s.charAt(0);
		String t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
		for (int i = 0; i < 26; i++) {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		}
		for (int i = 26; i < 52; i++) {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		}
		kb.close();
	} Scanner kb = new Scanner(System.in); kb new Scanner(System.in) String s = kb.next(); s kb.next() kb.next kb char p = s.charAt(0); p s.charAt(0) s.charAt s 0 String t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; t "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" for (int i = 0; i < 26; i++) {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		} int i = 0; int i = 0; i 0 i < 26 i 26 i++ i++ i {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		} {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		} if (t.charAt(i) == p) {
				System.out.println('A');
			} t.charAt(i) == p t.charAt(i) t.charAt t i p {
				System.out.println('A');
			} System.out.println('A') System.out.println System.out System System.out 'A' for (int i = 26; i < 52; i++) {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		} int i = 26; int i = 26; i 26 i < 52 i 52 i++ i++ i {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		} {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		} if (t.charAt(i) == p) {
				System.out.println('a');
			} t.charAt(i) == p t.charAt(i) t.charAt t i p {
				System.out.println('a');
			} System.out.println('a') System.out.println System.out System System.out 'a' kb.close() kb.close kb String[] args args public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		char p = s.charAt(0);
		String t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
		for (int i = 0; i < 26; i++) {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		}
		for (int i = 26; i < 52; i++) {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		}
		kb.close();
	}

} public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		char p = s.charAt(0);
		String t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
		for (int i = 0; i < 26; i++) {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		}
		for (int i = 26; i < 52; i++) {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		}
		kb.close();
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		char p = s.charAt(0);
		String t = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
		for (int i = 0; i < 26; i++) {
			if (t.charAt(i) == p) {
				System.out.println('A');
			}
		}
		for (int i = 26; i < 52; i++) {
			if (t.charAt(i) == p) {
				System.out.println('a');
			}
		}
		kb.close();
	}

}
