#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<cctype>
#include<cstdlib>
#include<algorithm>
#include<bitset>
#include<vector>
#include<list>
#include<deque>
#include<queue>
#include<map>
#include<set>
#include<stack>
#include<cmath>
#include<sstream>
#include<fstream>
#include<iomanip>
#include<ctime>
#include<complex>
#include<functional>
#include<climits>
#include<cassert>
#include<iterator>
#include<unordered_map>
#include<unordered_set>
using namespace std;

int main() {
	for (int i = 0;;i++) {
		string s;
		int ii = i;
		s.push_back(ii % 10 + '0');
		ii /= 10;
		s.push_back(ii % 10 + '0');
		ii /= 10;
		s.push_back(ii % 10 + '0');
		reverse(s.begin(), s.end());
		cout << s << endl;
		string ans;
		cin >> ans;
		if (ans == "unlocked") {
			return 0;
		}
	}
	return 0;
}