Cod sursa(job #1116390)

Utilizator negrea.andreiAndrei Negrea negrea.andrei Data 22 februarie 2014 15:22:31
Problema Factorial Scor 35
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.33 kb
Raporteaza aceasta sursa 
#include<fstream>

using namespace std;


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

int p, n, i=0, aux;

int main()
{  
	f >> p;
	for (n = 1; i < p; n++)
	{
		aux = n;
		while (aux%5 == 0)
		{
			aux /= 5;
			i++;
		}
	}
	if (p == 0) g << 1;
	else
		if ((i == p) && (i != 0)) g << n-1;
		else g << -1;
}