#include <iostream>
using namespace std;
 
//=============================================
long F(long n) {
	long F1 = 1;
 
	if(n==1) { return 3; }
	else {
		for(long i = 1; i <= n; i++) {
			long C = 0;
			// Note: the belore For loop only has one line
			for(long j = 1; j <= n-1; j++) { C = C+1; }
			// At the end of this for loop, C will be = (n-1)
			F1 = F1 * C;
		}
	}
	return F1;
}
//=============================================
 
int main() {
 
	for(long i = 1; i < 10; i++)
		printf("\nF(%ld) = %ld", i, F(i));
	return 0;
}

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