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

print(3, flush=True)
print(X, Y, X, flush=True)

t = int(input())
ans = set()

for p00 in [0, 1]:
    for p01 in [0, 1]:
        for p10 in [0, 1]:
            for p11 in [0, 1]:
                P = [[p00, p01], [p10, p11]]

                if P[P[X][Y]][X] == t:
                    ans.add(P[X][Y])

if len(ans) == 2:
    exit()
else:
    print(*ans)

exit()