import java.util.Random;
import java.util.Scanner;

public class Main {

	static int[] sizeMB = {50,120,350,400,700};
	static String str = "Hello World!";
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		Random rd = new Random(sc.next().hashCode());
		int n = 3;
		int m = sizeMB[n-1] * 1000 * 1000 / 4;
		int msqrt = (int) Math.sqrt(m);
		int[][] large2DArray = new int[msqrt][msqrt];
		for(int i=0;i<msqrt;i++) {
			for(int j=0;j<msqrt;j++) {
				large2DArray[i][j] = (int) (rd.nextDouble() * 128);
			}
		}
//		System.out.println(Arrays.toString(largeArray));
		StringBuilder sb = new StringBuilder();
		for(int i=0;i<str.length();i++) {
			LOOP: for(int j=0;j<msqrt;j++) {
				for(int k=0;k<msqrt;k++) {
					if (large2DArray[j][k] == str.charAt(i)) {
						sb.append((char) large2DArray[j][k]);
						break LOOP;
					}
				}
			}
		}
		System.out.println(sb.toString());
	}
}