A = [int(i)for i in input().split()]
ans = 0
if A[0] == A[2]:
    print(0)
elif max(A)==A[1] or min(A)==A[1]:
    print("INF")
else:
    for i in range(3,max(A)+1):
        B = [A[0]%i,A[1]%i,A[2]%i]
        if max(B)==B[1] or min(B)==B[1]:
            ans += 1
    else:
        print(ans)