#include <iostream>
using namespace std;

int main(){
  int a1,a2,a3;
  cin >> a1 >> a2 >> a3;

  int max;
  if(a1<a3)max=a3;
  else if(a1>a3)max=a1;
  else{
    cout << 0 << endl;
    return 0;
  }

  if((a2>a1&&a2>a3)||(a2<a1&&a2<a3)){
    cout << "INF" << endl;
    return 0;
  }

  int b1,b2,b3,cnt=0;
  for(int i=3;i<=max;i++){
    b1=a1%i;
    b2=a2%i;
    b3=a3%i;
    if(((b2<b1&&b2<b3)||(b2>b1&&b2>b3))&&b1!=b3)
      cnt++;
  }
  cout << cnt << endl;
  return 0;
}