#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <stack>
#include <map>
#include <algorithm>
#include <set>
#include <sstream>
#include <utility>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <cctype>
#include <climits>
using namespace std;

typedef long long ll;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) for(int i=0;i<(n);++i)
#define foreach(itr,c) for(__typeof(c.begin()) itr=c.begin(); itr!=c.end(); itr++)

int main(int argc, char const *argv[]) {
  char s[4];

  REP(i,1000){
    int t=i;
    for(int j=2; j>=0; ++j){
      s[j]='0'+t%10;
      t/=10;
    }

    printf("%s\n", s);

    string ret;
    cin >>ret;

    if(ret=="unlocked") continue;
    else break;
  }

  return 0;
}