Cod sursa(job #546290)

Utilizator Kaara333Stircu Daniela Kaara333 Data 4 martie 2011 18:53:26
Problema Factorial Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include<fstream>
using namespace std;
int main()
{
	long long P,x,a=0,cx;
	ifstream fin("fact.in");
	ofstream fout("fact.out");
	fin>>P;
	for(x=0; x<=100000000; x=x+5)
	{
		cx=x;
		while(cx%5==0)
		{
			a++;
			cx/=5;
		}	
		if(a>=P)
			break;
	}
	if(a==P)
		fout<<x;
	else
		fout<<-1;
	fin.close();
	fout.close();
	return 0;
}