Cod sursa(job #185599)

Utilizator codrinCodrin LACHE codrin Data 25 aprilie 2008 18:15:07
Problema Factorial Scor 60
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include<fstream.h>

int main()
{
 ifstream fin("fact.in");
 ofstream fout("fact.out");
 long s=0,p,k=0,aux;
 fin>>p;
	while(k<p)
		{
		 s+=5;
		 aux=s;
			while(aux%5==0)
				{
				 aux/=5;
				 k++;
				 }
		}
	if(p==0)
		fout<<1;
	else

	if(p==k)
		fout<<s;
	else

	if(p!=k)
		fout<<"-1";
return 0;
}