#include <bits/stdc++.h>
using namespace std;

#define REP(i, n) for(int (i) = 0; (i) < (n); (i)++)
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define MIN(a, b) ((a) < (b) ? (a) : (b))

typedef long long ll;

const ll MOD = 1e9+7;

int main(void){
	ll n;
	cin >> n;

	ll m = n-4;
	ll q = m/6, r = m%6;

	ll ans = 1;

	if(!r){
		ans *= (3*q)%MOD;
		ans *= (q+1)%MOD;
		ans %= MOD;
		ans++;
	}else{
		ans *= (3*q+r)%MOD;
		ans *= (q+1)%MOD;
		ans %= MOD;
	}

	cout << ans << endl;

	return 0;
}