#include <iostream>
using namespace std;

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

    if (a!=c and (b>a and b>c or b<a and b<c))
        cout<<"INF\n";
    else if (a==c or b==c or a==b)
        cout<<0<<endl;
    else {
        int res=0;
        for(int i=3; i<10000; ++i) {
            int x=a%i;
            int y=b%i;
            int z=c%i;

            if (x!=z and (y>x and y>z or y<x and y<z)) ++res;
        }
        cout<<res<<endl;
    }
}