package no304;

import java.util.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		char[] s = new char[10];
		Arrays.fill(s, '0');
		for(int i=0;i<10;i++) {
			int max = -1;
			int maxj = 0;
			for(int j=0;j<10;j++) {
				s[i] = (char) ('0' + j);
				System.out.println(String.valueOf(s));
				int match = sc.nextInt();
				sc.next();
				if (match > max) {
					max = match;
					maxj = j;
				}
				if (match == 10) {
					return;
				}
			}
			s[i] = (char) ('0' + maxj);
		}
	}

}