#include <algorithm>
#include <cstdio>
#include <iostream>
#include <map>
#include <cmath>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#include <stdlib.h>
#include <stdio.h>
#include <bitset>
using namespace std;
#define FOR(I,A,B) for(int I = (A); I < (B); ++I)
typedef long long ll;
const ll mod = 1000007;
int main(){
  ll N;
  cin >> N;
  ll ans;
  if(N % 2 == 0){
    ans = ((N / 2) % mod * (N / 2 + 1) % mod + N / 2) % mod;
  } else {
    ans = ((N / 2) % mod * (N / 2 + 2) % mod + (N / 2 + 1)) % mod;
  }
  cout << ans << endl;
  return 0;
}