#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <iomanip>
#include <cctype>
using namespace std;
typedef long long ll;

int main()
{
	for (int i = 0; i <= 9; i++)
	{
		for (int j = 0; j <= 9; j++)
		{
			for (int k = 0; k <= 9; k++)
			{
				cout << i << j << k << endl;
				string s;
				cin >> s;
				if (s == "unlocked")return 0;
			}
		}
	}
	return 0;
}