Cod sursa(job #226210)

Utilizator Ionutz_LalaLala Marius Ionut Ionutz_Lala Data 1 decembrie 2008 11:28:57
Problema Factorial Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include<fstream.h>
int main()
{
 ifstream in("fact.in");
 ofstream out("fact.out");
 long int p,n5=0,i,nr;
 in>>p;
 if(p==0) {out<<1;return 0;}
 for(i=1;n5<p;i++)
 {
   n5++;
   if(!(i%5))
   {
     nr=i;
     while(!(nr%5)) {nr/=5;n5++;}
   }

 }
 if(n5==p) out<<(i-1)*5;
 else out<<-1;
 return 0;
}