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

long int sumOfGroup(long int k) 
{
    /*// Return the sum of the elements of the k'th group.

    int in = 0,i,j;
    int *ar;

    long int sum = 0;
    for (i = k-1;i != 0;i--)
    {
       in = in + i; 
    }
        ar = malloc(sizeof(int)*((in+k)/2));
    //printf("initial ind %d\n",in);
    for(i = 0,j=0;i < (k*10);i++)
    {
        if(i%2 != 0)
        {
            ar[j] = i;
            j++;
        }
    }
    
    for(i = 0;i < k;i++)
    {
        sum = sum + ar[in];
        in++;
    }
       // printf("initial sum %ld\n",sum);*/
    long int ans;
    ans = k*k*k;
    return(ans);
}

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