#include <stdio.h>
void main()
{int factorial,number;
scanf("%d",&number);
factorial=1;
while(number>0){
factorial=factorial*number;
--number;}
printf("%d",factorial);
}
#include <stdio.h>
void main()
{int factorial,number;
scanf("%d",&number);
factorial=1;
while(number>0){
factorial=factorial*number;
--number;}
printf("%d",factorial);
}