Cod sursa(job #482949)

Utilizator deiosxHalalai Tudor Andrei deiosx Data 6 septembrie 2010 12:06:44
Problema Factorial Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.36 kb
Raporteaza aceasta sursa 
#include<fstream.h>
main()
{
long p,i,n5,x,fr;
n5=0;
ifstream f("fact.in");
ofstream g("fact.out");
f>>p;
 if(p==0)
 g<<1;
 else
 {
  for(i=1;;i++)
  {
   if(i%5==0)
   {
    x=i,fr=0;
    while(x%5==0)
    {
     x=x/5,fr++;
    }
    n5=n5+fr;
   }
   n5++;
   if(n5>=p)break;
  }
if(n5==p)
g<<5*i;
if(n5>p)
g<<-1;
}
return 0;
}