#include <bits/stdc++.h>
using namespace std;
using ill = int long long;
#define rep(i, n) for (ill i = 0; i < (n); i++)
#define all(s) s.begin(), s.end()
using inp = pair<int, int>;
using vecb = vector<bool>;
using vecb2 = vector<vecb>;
int main()
{
    int ans = 0;
    while (1)
    {
        if (ans <= 9)
        {
            cout << "00" << ans << endl;
        }
        else if (ans <= 99)
        {
            cout << "9" << ans << endl;
        }
        else
        {
            cout << ans << endl;
        }
        string s;
        cin >> s;
        if (s == "unlocked")
        {
            return 0;
        }
        ans++;
    }
}