Cod sursa(job #561335)

Utilizator nicknameLare Nicu nickname Data 19 martie 2011 20:36:24
Problema Factorial Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include <fstream>

using namespace std;

ifstream fin("fact.in");
ofstream fout("fact.out");

int main(){
	long long p,n,k;
	fin>>p;
	if (p==0){
		fout<<1;
		return 0;
	}
	n=0;
	k=0;
	while (p!=0){
		n+=5;
		k++;
		if (k%5==0)
			p--;
		if (k%20==0)
			p-=2;	
		p--;
	}	
	fout<<n;
	fin.close();
	fout.close();
	return 0;
}