#include <bits/stdc++.h>
using namespace std;

signed main(){
  for( int i = 0; i < 1000; ++i ){
    string s;
    for( int x = i; x; x /= 10 )
      s += ( char ) ( x % 10 );
    while( s.size() < 3 )
      s += "0";
    reverse( s.begin(), s.end() );
    cout << s << endl;
    cin >> s;
    if( s == "unlocked" )
      break;
  }
  return 0;
}