#include<bits/stdc++.h>
using namespace std;
int main(){
  int n=0;int a,b,c;
  a=n/100;b=n%100/10;c=n%10;
  cout<<a<<b<<c<<endl;
  string w;cin>>w;
  while(w=="locked"){
    n++;
    a=n/100;b=n%100/10;c=n%10;
  cout<<a<<b<<c<<endl;
  cin>>w;
  }
}