def solve():
    answer = ''
    zeros = '0' * 10
    print(zeros)
    x, term = input().split()
    baseline = int(x)
    for pos in range(10):
        for val in range(1, 10):
            guess = '0' * pos + str(val) + '0' * (9 - pos)
            print(guess)
            x, term = input().split()
            x = int(x)
            if x == 10:
                return
            if x > baseline:
                answer = answer + str(val)
                break
            if x < baseline:
                answer = answer + '0'
                break
    print(answer)

solve()