Cod sursa(job #715119)

Utilizator lukkerLiNoimi Semain lukker Data 16 martie 2012 18:11:13
Problema Factorial Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.29 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;

ifstream f("fact.in");
ofstream f2("fact.out");

int main() {
	long k=0,p=0,n,i=0;
	f>>n;
	if(n==0) {
		p=n;
		k=1;
	} else {
		while(p<n) {
			k+=5;
			i++;
			p++;
			if(i%5==0) p++;
		}
	}
	if(p==n) f2<<k; else f2<<-1;
	return 0;
}