#include <stdio.h>

double fact( int n );
double factsum( int n );

int main()
{
    int n;

    scanf("%d",&n);
    printf("fact(%d) = %.0f\n", n, fact(n));
    printf("sum = %.0f\n", factsum(n));
		
    return 0;
}

/* 你的代码将被嵌在这里 */

double fact( int n )
{
  if(n==1||n==0) return 1;
  else return n*fact(n-1);
}
double factsum( int n )
{
  int i;
  double sum=0;
  if(n==0) return 0;
  else
  {
    for(i=1;i<=n;i++)
    sum+=fact(i);
    return sum;
  }
}