/* -*- coding: utf-8 -*-
 *
 * 358.cc: No.358 も～っと!門松列 - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

/* typedef */

/* global variables */

inline bool is_kadomatsu(int a0, int a1, int a2) {
  return (a0 != a2 && ((a0 < a1 && a1 > a2) || (a0 > a1 && a1 < a2)));
}

/* subroutines */

/* main */

int main() {
  int a0, a1, a2;
  cin >> a0 >> a1 >> a2;

  if (is_kadomatsu(a0, a1, a2)) {
    puts("INF");
    return 0;
  }

  int maxa = max(a0, max(a1, a2));
  int cnt = 0;
  for (int p = 3; p <= maxa; p++)
    if (is_kadomatsu(a0 % p, a1 % p, a2 % p)) cnt++;

  printf("%d\n", cnt);
  return 0;
}