Cod sursa(job #263234)

Utilizator mariusandreiMarius Lucian Andrei mariusandrei Data 20 februarie 2009 00:14:34
Problema Factorial Scor 25
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.36 kb
Raporteaza aceasta sursa 
#include<fstream>
using namespace std;
int main()
{
	ifstream in("fact.in");
    ofstream out("fact.out");
	int p,ok=0,n,cc=0,pp;
	in>>p;
	for(int n=1;ok==0;++n)
	{
		pp=n;
		while(pp%5==0)		
			if (pp%5==0) 
			{
				cc++; 
				pp=pp/5;
			}

		if(cc>=p) ok=n;
	}

	if(ok==0) out<<-1;
	else out<<ok;
	out.close();
	in.close();
	return 0;
}