#include<bits/stdc++.h>
using lint=long long;
#define AUTO 0
#if AUTO
    std::string secret="0011223304";
#endif
lint query(std::string s){
    std::cout<<s<<std::endl;
    lint x=0;
#if AUTO
    for(lint i=0;i<10;i++){
        x+=s.at(i)==secret.at(i);
    }
#else
    std::cin>>x>>s;
#endif
    if(s.front()=='u')exit(0);
    return x;
}
int main(){
    std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);
    std::cout.setf(std::ios_base::fixed);std::cout.precision(15);
    std::string ans=std::string(10,'$');
    std::string basic(10,'0');
    lint basic_ans=query(basic);
    for(lint i=0;i<10;i++){
        for(lint j=1;j<=10;j++){
            if(j==10){
                ans.at(i)='0';
                break;
            }
            basic.at(i)='0'+j;
            if(basic_ans<query(basic)){
                ans.at(i)='0'+j;
                break;
            }
        }
        basic.at(i)='0';
    }
    std::cout<<ans<<std::endl;
}