def query(A):
    A = [str(a) for a in A]
    print(''.join(A), flush=True)
    c, v = map(str, input().split())
    if v == 'unlocked':
        exit()
    return int(c)

A = [0]*10
for i in range(10):
    B = [-1]*10
    for j in range(10):
        A[i] = j
        c = query(A)
        B[j] = c
    m = min(B)
    for j in range(10):
        if B[j] == m+1:
            A[i] = j