#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int main(){
    unsigned long int n;
    cin>>n;
    unsigned long int x, y = 0;
    for (unsigned long int i=1; i<=n; i++) {
        x += i;
        y += i;
    }
    y += n;
    cout<<__gcd(x, y)<<endl;
    return(0);
}