#include <bits/stdc++.h>
using namespace std;
string f(int x) {
	string res = to_string(x);
	while(res.size() < 3) res = '0' + res;
	return res;
}
int main() {
	string res;
	for(int i = 0; i < 1000; i++) {
		cout << f(i) << endl;
		cin >> res;
		if(res == "unlocked") break;
	}
	return 0;
}