#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; ++i)
typedef long long int ll;
using namespace std;

const int MOD = 1e9 + 7;

int main() {
    ll N;
    cin >> N;

    cout << N * N % MOD * N % MOD << endl;

    return 0;
}