#include<iostream>
#include<string>
#include<cstdio>
using namespace std;

int main(){
    int A1,A2,A3,count=0;
    cin >> A1 >> A2 >> A3;
    for(int i=1;i<100000;i++){
        if((A2%i>A1%i&&A2%i>A3%i&&A1%i!=A3%i)||(A2%i<A1%i&&A2%i<A3%i&&A1%i!=A3%i))  count++;
    }
    if(count > 1000)    cout << "INF";
    else cout << count; 
    return 0;
}