#include <bits/stdc++.h>

using namespace std;

long sumOfGroup(int k,int l) {
    long y;
    if(l==0)
        return(1);
    else if(l%2==0)
    {y=sumOfGroup(k,l/2);
    return(y*y);}
    else
        return(k*sumOfGroup(k,l-1));
}

int main() {
    int k;
    cin >> k;
    int l=k;
    long answer = sumOfGroup(k,3);
    cout << answer << endl;
    return 0;
}