import java.util.*;
public class Naloga20{
	public static void main(String[]args){
		Random r = new Random();
		int asci;
		int a = 0;
		do{
			asci = r.nextInt(65, 91);
			System.out.print(" "+(char)asci);
			a++;
		}while(a < 30);
	}
}