#include <bits/stdc++.h>
#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <string>
#include <sstream>
#include <cmath>
#include <stack>
#include <queue>
#include <cctype>
#include <stdio.h>
#include <map>
#include <string.h>
#include <utility>

typedef long long ll;
using namespace std;

typedef pair<int, int> P;

ll gcd(ll a, ll b){
	if(b==0){
		return a;
	}

	gcd(b, a%b);
}


int main() {

	ll n=0;
	cin>>n;

	ll a = (n+1)*(n/2);
	if(n%2 ==1){
		a += (n+1)/2;
	}

	ll b = a-1+n+1;

/*
	cout<<a<<endl;

	cout<<b<<endl;
*/

	cout<<gcd(b,a)<<endl;

	return 0;
}