Cod sursa(job #724158)

Utilizator hainagiudanielHainagiu Daniel hainagiudaniel Data 26 martie 2012 11:59:51
Problema Factorial Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.26 kb
Raporteaza aceasta sursa 
#include<fstream>
using namespace std;
 
int main()
{
	unsigned long long a,p=25;
	ifstream in("fact.in");
	ofstream out("fact.out");
	in>>a;
	if(a==0)
		out<<1;
	else{
	a*=5;
	while(p<a)
	{
		a-=((a/p-1)*5);
		p*=5;
	}
	out<<a;}
	return 0;
}