#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    int N = 10;
    string ans(N, '0');
    rep(i,N) {
        vector<int> cnt(10);
        rep(d,10) {
            ans[i] = char(d + '0');
            cout << ans << endl; cout.flush();
            int X; string judge;
            cin >> X >> judge;
            if(judge == "unlocked") return 0;
            cnt[d] = X;
        }
        ans[i] = char(max_element(cnt.begin(), cnt.end()) - cnt.begin() + '0');
    }
}