#include <iostream>
#include <algorithm>
#include <string>

using namespace std;

int main() {
    const int digits = 10;
    int  n[10];
    int  ans[digits] = {};
    int  matched[digits] = {};
    int  maxmatch;
    string rep;

    for (int i = 0; i < 10; i++) {
        for (int digit = 0; digit < digits; digit++) {
            cout << i;
        }
        cout << endl;
        cin >> n[i] >> rep;

        if(rep == "unlocked") {
            return 0;
        }
    }

    for (int i = 1; i < 10; i++) {
        if (n[i] == 0) {
            continue;
        }

        maxmatch = 0;
        for (int j = 0; j < digits; j++) {
            if (ans[j] != 0) {
                continue;
            }
            for (int digit = 0; digit < digits; digit++) {
                if (digit == j) {
                    cout << i;
                } else {
                    cout << ans[digit];
                }
            }
            cout << endl;

            cin >> matched[j] >> rep;
            if(rep == "unlocked") {
                return 0;
            }

            maxmatch = max (matched[j], maxmatch);
        }

        for (int j = 0; j < digits; j++) {
            if (matched[j] == maxmatch) {
                ans[j] = i;
            }
            matched[j] = 0;
        }
    }

    for (int digit = 0; digit < digits; digit++) {
        cout << ans[digit];
    }
    cout << endl;

    return 0;
}