#define _USE_MATH_DEFINES
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string>
#include<iostream>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include <sstream>
#include<iomanip>
#include <ctype.h>
using namespace std;

//#include<bits/stdc++.h>



int main() {
	string a = "000";
	
	while (1) {
		cout << a << endl;
		string b;
		cin >> b;
		if (b == "unlocked")break;
		a[2]++;
		if (a[2] > '9') {
			a[1]++; a[2] = '0';
		}
		if (a[1] > '9') {
			a[0]++; a[1] = '0';
		}
	}


	return 0;
}