#include <iostream>
#include <string>
using namespace std;

int main()
{
	for (int i = 0; i < 1000; i++) {
		int n = i;
		cout << i / 100 << (i / 10)%10 << i % 10 << endl;
		string str;
		cin >> str;
		if (str == "unlocked") break;
	}

	return 0;
}