import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

A = list(map(int,read().split()))

def is_kadomatsu(B):
    if len(set(B)) != 3:
        return False
    if B[0]<B[1]<B[2]:
        return False
    if B[0]>B[1]>B[2]:
        return False
    return True

if is_kadomatsu(A):
    print('INF')
    exit()

answer = 0
for p in range(1,1001):
    B = [x%p for x in A]
    if is_kadomatsu(B):
        answer += 1

print(answer)