#include <stdio.h>
#include <stdlib.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
int faktoriyel(int a){
if(a == 0) return 1;
else return a * faktoriyel(a-1);
}
int main(int argc, char *argv[]) {
int a;
scanf("%d", &a);
printf("Sayinin faktoriyeli: %d", faktoriyel(a));
return 0;
}