#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef complex<double> P;
typedef pair<int,int> pii;
#define REP(i,n) for(ll i=0;i<n;++i)
#define REPR(i,n) for(ll i=1;i<n;++i)
#define FOR(i,a,b) for(ll i=a;i<b;++i)

#define DEBUG(x) cout<<#x<<": "<<x<<endl
#define DEBUG_VEC(v) cout<<#v<<":";REP(i,v.size())cout<<" "<<v[i];cout<<endl
#define ALL(a) (a).begin(),(a).end()

#define MOD (ll)(1e9+7)
#define ADD(a,b) a=((a)+(b))%MOD
#define FIX(a) ((a)%MOD+MOD)%MOD

int main(){
  string fin = "";
  string cand = "";
  bool ok = false;
  REP(i,10){
    int cl = -1;
    REP(j,10){
      string s = fin;
      s += (j+'0');
      REP(_,10-1-i) s += "0";
      cout << s << endl;
      int x;
      string t;
      cin >> x >> t;
      if(x==10){
        ok = true;
        fin += (j+'0');
        break;
      }
      if(cl == -1){
        cl = x;
        cand = fin;
        cand += (j+'0');
      }else if(x > cl){
        cl = x;
        fin += (j+'0');
        break;
      }else if(x < cl){
        fin = cand;
        break;
      }
    }
    if(ok)break;
  }
  return 0;
}