#include <bits/stdc++.h>

using namespace std;

int main() {
	for (char a = '0'; a <= '9'; ++a) {
		for (char b = '0'; b <= '9'; ++b) {
			for (char c = '0'; c <= '9'; ++c) {
				cout << a << b << c << endl;
				string result; cin >> result;
				if (result == "unlocked") {
					exit(0);
				}
			}
		}
	}
}