import sys if sys.platform =='ios': import clipboard a=clipboard.get() a = a.split('\n') text = '\n'.join(a) with open('input_file.txt','w') as f: f.write(text) sys.stdin = open('input_file.txt') A = list(map(int,input().split())) cnt = 0 if A[0] == A[2]: exit(print(0)) N = max(A) n = min(A) if N == A[1] or n == A[1]: print("INF") exit() else: for i in range(2,1001): if A[0]%i != A[2]%i and A[1]%i > A[0]%i and A[1]%i > A[2]%i: cnt += 1 elif A[0]%i != A[2]%i and A[1]%i < A[0]%i and A[1]%i < A[2]%i: cnt += 1 print(cnt)