# coding:utf-8

import random
def main():
    # a = str(random.randint(0,9999999999)).zfill(10)
    a = '1234567890'
    print(a)
    score, s = input().split()
    if s == 'unlocked':
        return
    for i in range(10):
        for j in range(10):
            print(a[:i]+str(j)+a[i+1:])
            score2, s = input().split()
            if s == 'unlocked':
                return
            if int(score) < int(score2):
                a = a[:i]+str(j)+a[i+1:]
                score = score2
                break

main()