#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
    srand((unsigned)time(NULL));
    for(int i=0;i<1e9;i++){
        for(int j=0;j<3;j++) cout<<rand()%10;
        cout<<endl;
        string s;
        cin>>s;
        if(s[0] == 'u') break;
    }
}