Cod sursa(job #292551)

Utilizator APMeMangra Alex APMe Data 31 martie 2009 11:40:00
Problema Factorial Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.29 kb
Raporteaza aceasta sursa 
#include<fstream.h>
main()
{long p,n=0,cont=1,c;
 ifstream i("fact.in");
 ofstream o("fact.out");
 i>>p;
 while(cont<p)
  {n=n+5;c=cont;
   while(c%5==0)
    {cont++;c/=5;}
   cont++;
  }
 if(cont==p)
   o<<n<<'\n';
  else
   o<<"-1"<<'\n';
 i.close();
 o.close();
 return 0;
}