# include <stdio.h>

/**
 * Ypologismos paragontikou me dyo tropous **/
 
 
int factorial(int n)
{
	int p=1;
	int i;
	for(i=1;i<=n;i++)
	  p=p *i;
	return p;
}

int recurrentFactorial(int n)
{
	if(n<=1)
		return 1;
    else
        return n * factorial(n-1);
}


int main()
{
	int a;
	int p1,p2;
	printf("Dose akeraio ?");
	scanf("%d",&a);
	p1=factorial(a);
	p2=recurrentFactorial(a);
	printf("Paragontika %d %d \n",p1,p2);
	return 0;
}