#include <iostream>
using namespace std;

int main(void){
  string ans = "??????????";
  int prev_mached = 0;
  for(int i = 0; i < 10; i++){
    int now_mached;
    string status;
    for(int j = 0; j <= 9; j++){
      ans[i] = '0' + j;
      cout << ans << endl;
      cin >> now_mached >> status;
      if(now_mached > prev_mached){
        prev_mached = now_mached;
        break;
      }
    }
  }
  cout << ans << endl;
  return 0;
}