#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const ll MOD = 1000000007;

ll modpow(ll x, ll n, ll mod = MOD) {
    ll res = 1;
    while (n > 0) {
        if (n & 1) res = res * x % mod;
        x = x * x % mod;
        n >>= 1;
    }
    return res;
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    ll n;
    cin >> n;
    n -= 4;

    ll total = (n + 2) % MOD * ((n + 1) % MOD) % MOD * ((MOD + 1) / 2) % MOD;
    ll ans = 0;

    if (n % 3 == 0) {
        ans++;
        total = (total + MOD - 1) % MOD;
    }

    ll hoge = (n / 2 + 1 - (n % 3 == 0)) % MOD;
    (ans += hoge) %= MOD;
    total = (total + MOD - hoge * 3 % MOD) % MOD;

    (ans += total * modpow(6, MOD - 2) % MOD) %= MOD;
    cout << ans << "\n";
    return 0;
}