#include <bits/stdc++.h>
#define PB push_back
#define MP make_pair
#define REP(i,n) for (int i=0;i<(n);i++)
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define ALL(a) (a).begin(),(a).end()
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<string,string> P;
const int INF=1e9+1;
int main(){
      REP(i,10){
            string res="000",re;
            res[0]=(i+'0');
            REP(j,10){
                  res[1]=(j+'0');
                  REP(k,10){
                        res[2]=(k+'0');
                        cout<<res<<endl;
                        cin>>re;
                        if(re=="unlocked"){
                              return 0;
                        }
                  }
            }
      }
}