import java.util.*;
import java.io.*;

public class Exercise47{
  public static void main (String[] args) throws IOException{

    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

    String nums = "0000000000";
    String[] numArray = nums.split("");

    a: for (int a = 0; a < 10; a++){
      b: for (int b = 0; b < 10; b++){
        System.out.println(nums);
        System.out.flush();
        String result = new String(in.readLine());

        int resultBeforeNum = getAnswer(result);
        if (resultBeforeNum == 10){
          break a;
        }

        int currentNum = Integer.parseInt(numArray[a]);
        int changedNum = currentNum + 1;
        numArray[a] = String.valueOf(changedNum);

        nums = "";
        for (int n = 0; n < 10; n++){
          nums += numArray[n];
        }

        System.out.println(nums);
        System.out.flush();

        result = new String(in.readLine());
        int resultAfterNum = getAnswer(result);

        if (resultAfterNum == 10){
          break a;
        }else if (resultAfterNum > resultBeforeNum){
          break b;
        }else if (resultAfterNum < resultBeforeNum){
          numArray[a] = String.valueOf(currentNum);
          break b;
        }
      }
    }
  }
  public static int getAnswer(String result){

    String[] resultArray = result.split(" ");

    int resultNum = Integer.parseInt(resultArray[0]);
    return resultNum;
  }
}