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()
        if int(x) > baseline:
            answer = answer + str(val)
            continue
        if int(x) < baseline:
            answer = answer + '0'
            continue
print(answer)