n, k = map(int, input().split())

if n < k:
    print('INF')
    exit()

B = []
for i in range(18):
    if (n>>i)&1:
        continue
    else:
        if i <= 10:
            B.append(i)

#print(B)
m = len(B)
ans = 0
import itertools
for p in itertools.product(range(3), repeat=m):
    d = 0
    for j in range(m):
        b = B[j]
        if p[j] == 0:
            continue
        elif p[j] == 1:
            d += 1<<b
        else:
            d -= 1<<b
    if 0 <= d <= k:
        ans += 1
print(ans)