import sys
import random
readline = sys.stdin.readline
write = sys.stdout.write
flush = sys.stdout.flush

# クエリ: "? x1 x2" を出力
def query(x):
    s = str(x).zfill(10)
    write("%s\n" % s)
    flush()
    # ジャッジから返される値を取得
    n,l  = readline().strip()
    if l == 'unlocked':
        exit(0)
    
    return int(n)


while True:
    r = random.randint(0, 10**10-1)
    n,ans  = query(r)
    if n==0:
        break

q = [0]*10
for i in range(10):
    for j in range(10):
        q[i]=j
        x = int(''.join(map(str, q)))
        if query(x)==i+1:
            break