#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main(){
    int A1,a1,A2,a2,A3,a3;
    cin>>A1>>A2>>A3;
    if(A1>A2&&A2<A3&&A1!=A3||A1<A2&&A2>A3&&A1!=A3){
        cout<<"INF"<<endl;
        return 0;
    }
    int c=0;
    for(int p=1;p<=1000;p++){
        a1=A1%p; a2=A2%p; a3=A3%p;
        if(a1>a2&&a2<a3&&a1!=a3||a1<a2&&a2>a3&&a1!=a3){
            c++;
        }
    }
    cout<<c<<endl;
    return 0;
}