import java.util.*;

public class No543 {

	public static void main(String[] args) {
		try (final Scanner sc = new Scanner(System.in)) {
			char c1 = sc.next().charAt(0);
			char c2 = sc.next().charAt(0);
			System.out.println(c1 + " " + c2);
		}
	}
	
	static long gcd(long n, long r) { return r == 0 ? n : gcd(r, n % r); }
	static long lcm(long n, long r) { return n/gcd(n,r)*r; }
	static void dump(Object... objects) { System.err.println(Arrays.deepToString(objects)); }
}