A, B, C = map(int, input().split())

if A==B or B==C or C==A:
    print(0)
elif (B < A and B < C) or (B > A and B > C):
    print('INF')
else:
    ans = 0
    for p in range(2, max(A, C) + 1):
        a, b, c = A % p, B % p, C % p
        if a != c and ((b < a and b < c) or (b > a and b > c)):
            ans += 1
    print(ans)