from itertools import product
def adic(n):
    Ret = [0]*18
    for i in range(18):
        if n%2 == 0:
            Ret[i] = 0
        else:
            Ret[i] = 1
        n //= 2
    return Ret

N, K = map( int, input().split())
check = 2**18
Nadic = adic(N)
for i in range(18):
    if Nadic[i] == 0:
        check -= 2**i
if check <= K:
    print("INF")
else:
    D = [2**i for i in range(18) if Nadic[i] == 0 and 2**i <= K]
    ans = 0
    P = len(D)
    for F in product( range(3), repeat = P):
        c = 0
        for i in range(P):
            if F[i] == 1:
                c += D[i]
            if F[i] == 2:
                c -= D[i]
        if c <= K and c >= 0:
            ans += 1

    print(ans)