#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>

long int sumOfGroup(int k) {
    long long answer=k;
    return (answer*k*k);// Return the sum of the elements of the k'th group.
}

int main() {
    int k; 
    scanf("%i", &k);
    long long answer = sumOfGroup(k);
    printf("%lld\n", answer);
    return 0;
}