Cod sursa(job #153859)

Utilizator CarmenAdelaCosovan Carmen Adela CarmenAdela Data 10 martie 2008 19:35:10
Problema Factorial Scor 55
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include<fstream.h>
ifstream f("fact.in");
ofstream g("fact.out");
long int p,k;
int n,x;
int main()
{
 f>>p;
 if(p==0)
  g<<1;
 else
  {n=5;
   k=0;
   while(k<p)
    {x=n;
     while(x%5==0)
      {
      k++;
      x=x/5;
      }
     n+=5;
    }
   if(k!=p)
    g<<"-1";
   else
    g<<n-5;
  }
return 0;
}