#include <iostream>
#include <algorithm>
using namespace std;

int main(){
	int a, b, c;
	cin >> a >> b >> c;

	if(((b>a && b>c) || (b<a && b<c)) && a!=c){
		cout << "INF" << endl;
	}else{
		int sum = 0;
		for(int p = 1; p <= max({a, b, c}); p++){
			if((((b%p)>(a%p) && (b%p)>(c%p)) || ((b%p)<(a%p) && (b%p)<(c%p))) && (a%p)!=(c%p)){
				sum += 1;
			}
		}
		cout << sum << endl;
	}
	return 0;
}