# -*- coding: utf-8 -*-
"""
No.305 鍵(2)
https://yukicoder.me/problems/no/305

"""
import sys
from sys import stdin
input = stdin.readline


def check_keys(numbers):
    print(''.join(map(str, numbers)), flush=True)
    res, _ = input().split()
    return int(res)


def main(args):
    numbers = [0] * 10
    prev_res = check_keys(numbers)

    for keta in range(10):
        if prev_res == 10:
            break
        for i in range(10):
            numbers[keta] = i
            res = check_keys(numbers)
            if res > prev_res:
                prev_res = res
                break
            elif res < prev_res:
                numbers[keta] -= 1
                break


if __name__ == '__main__':
    main(sys.argv[1:])