Cod sursa(job #36906)

Utilizator c_iulyanCretu Iulian c_iulyan Data 24 martie 2007 12:08:22
Problema Factorial Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.25 kb
Raporteaza aceasta sursa 
#include<fstream.h>
ifstream f("fact.in");
ofstream g("fact.out");
long p,k=1;
int main()
{f>>p;
if(p<0) g<<-1;
else if(p==0) g<<1;
else
{for(long i=2;i<=p;i++)
  {k++;
  long w=i-1;
  while(w%5==0)
  {w=w/5; k--;}
  }
g<<k*5;
}
return 0;
}