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

char S[100];

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

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

    if(N == 10){exit(0);}
    
    return N;
}

int main(){
    for(int i=0;i<10;++i){
        S[i] = '0';
    }
    
    for(int i=0;i<10;++i){
        int x = -1, n = 100;
        for(int j=0;j<10;++j){
            for(int k=i+1;k<10;++k){
                S[k] = '0' + j;
            }

            int m = ask();
            if(m < n){
                x = j;
                n = m;
            }
        }

        for(int j=i+1;j<10;++j){
            S[j] = '0' + x;
        }

        for(int j=0;j<10;++j){
            S[i] = '0' + j;
            if(ask() == i + 1){
                break;
            }
        }
    }
}