import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String ans = "";
    for(int i = 0; i < 10; i++) {
      int s = 0;
      int l = 0;
      for(int j = 0; j < 10; j++) {
        String t = "";
        for(int k = 0; k < 10; k++) {
          if(k == i) {
            t += j;
          } else {
            t += 0;
          }
        }
        System.out.println(t);
        System.out.flush();
        int L = sc.nextInt();
        String str = sc.next();
        if(str.equals("unlocked")) {
          System.exit(0);
        }
        if(l <= L) {
          s = j;
          l = L;
        }
      }
      ans += s;
    }
    System.out.println(ans);
    System.exit(0);
  }
}