import itertools

X, Y = map(int, input().split())

for n in range(3, 20):
    for bit in range(1 << n):
        one = -1
        zero = -1
        P = []
        for i in range(n):
            P.append(bit >> i & 1)

        for x in range(1 << 4):
            y = P[0]
            for p in P[1:]:
                y = x >> (y * 2 + p) & 1

            to = x >> (X * 2 + Y) & 1
            if y == 1:
                if one == -1:
                    one = to
                elif one != to:
                    break
            else:
                if zero == -1:
                    zero = to
                elif zero != to:
                    break
        else:
            print(n)
            print(*P, flush=True)
            res = int(input())
            if res == 1:
                print(one)
            else:
                print(zero)
            exit()