#include<bits/stdc++.h>

using namespace std;
using ll=long long;
#define rep2(i, a, n) for(int i = (a); i < (n); i++)
#define rep(i, n) rep2(i,0,n)

inline bool isK(const int &a, const int &b, const int &c) {
  if ((a != c) && ((a > b && c > b) or (a < b && c < b))) return 1;
  return 0;
}

int main(){
  cin.tie(nullptr);ios_base::sync_with_stdio(false);
  int a,b,c;cin>>a>>b>>c;
  if(isK(a, b, c)){
    cout << "INF" << endl;
    return 0;
  }
  int ans = 0;
  rep2(i, 3, 1001) ans += isK(a % i, b % i, c % i);
  cout << ans << endl;
}