//https://ncode.syosetu.com/n4830bu/305/
#include <bits/stdc++.h>
using namespace std;

int main() {
    string ans = "0000000000";
    int bef = 0;
    for (int i = 0; i < 10; i++) {
        for (int j = 0; j < 10; j++) {
            string maine = ans;
            maine[i] = j + '0';
            cout << maine << endl;
            int book;
            string s;
            cin >> book >> s;
            if (book == 10)
                return 0;
            if (book > bef) {
                bef = book;
                ans = maine;
            }
        }
    }
}