#include <iostream>
#include <tuple>
using namespace std;

int ask(std::string S){
    std::cout << S << std::endl;

    int N;
    std::string T;
    std::cin >> N >> T;

    return N;
}

string find(string prefix, string suffix){
    for(int i=0;i<100000;++i){
        string s = to_string(i);
        while(s.size() < 5){
            s = '0' + s;
        }

        if(ask(prefix + s + suffix) == 5){
            return s;
        }
    }

    return "-1";
}

int main(){
    string notMatchedSuffix;
    {
        int matched = 100;
        for(int i=0;i<10;++i){
            string s = string(5, '0' + i);
            int n = ask(string(5, '0') + s);
            if(n < matched){
                notMatchedSuffix = s;
                matched = n;
            }
        }
    }
    
    string notMatchedPrefix;
    {
        int matched = 100;
        for(int i=0;i<10;++i){
            string s = string(5, '0' + i);
            int n = ask(s + string(5, '0'));
            if(n < matched){
                notMatchedPrefix = s;
                matched = n;
            }
        }
    }

    string res = find("", notMatchedSuffix) + find(notMatchedPrefix, "");
    std::cout << res << std::endl;
}