#define _USE_MATH_DEFINES
#include<stdio.h>
#include<string>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include<iomanip>

//#include<bits/stdc++.h>


using namespace std;


int main() {
	
	long long int n, x,y;
	cin >> n;
	//n %= 1000007;
	x = n / 2;
	if (n % 2)x++;
	y = n - x;
	x %= 1000007;
	y %= 1000007;

	long long int ans;
	ans = x*(y + 1) + y;
	ans %= 1000007;
	cout << ans << endl;

	return 0;

}