#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) {
    // Return the sum of the elements of the k'th group.
 /* long  int count=0,i,j;
    long int sum=0;
         i=1;
       while(count<k)
        {
            count++;
            for(j=1;j<=count;j++)
            {
              if(count==k)
              {
                    sum=sum+i;
                //  printf("%d\n",i);
              }
                  i=i+2;
        }
    }*/
    return (k*k*k);
}

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