#include <cstdio>
#include <cstdlib>
#include <cstddef>
#include <vector>
#include <algorithm>
#include <cmath>
#include <string>
#include <iostream>
#include <iomanip>
#define L64 long long
#define MOD (1000000007LL)

int main(void)
{
  int all0, retnum;
  char retstr[100];
  // std::string retstr;
  std::cout << "0000000000" << std::endl;
  std::cin >> all0 >> retstr;
  if(all0 == 10){
    return 0;
  }
  int result[10];
  for (int i = 1; i <= 10; i++){
    for(int k = 1; k <= 9; k++){
      for (int j = 1; j < i; j++){
        std::cout << "0";
      }
      std::cout << k;
      for (int j = i + 1; j <= 10; j++){
        std::cout << "0";
      }
      std::cout << std::endl;
      std::cin >> retnum >> retstr;
      if(retnum == 10){
        return 0;
      } else if(all0 < retnum){
        result[i - 1] = k;
        break;
      } else if(retnum < all0){
        result[i - 1] = 0;
        break;
      }
    }
  }
  for (int i = 0; i < 10; i++){
    std::cout << result[i];
  }
  std::cout << std::endl;
  std::cin >> retnum >> retstr;
}