a, b, c = map(int, input().split())

if (a < b > c or a > b < c) and a != c:
    print('INF')

elif a == b or b == c or a == c:
    print(0)

else:
    x = 0
    for i in range(2, max(a+1, b+1, c+1)):
        if (a%i < b%i > c%i or a%i > b%i < c%i) and a%i != c%i:
            x += 1
    print(x)