Cod sursa(job #12947)

Utilizator horiama1Mania Horia horiama1 Data 5 februarie 2007 12:36:10
Problema Factorial Scor 5
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include<fstream.h>
int main(){
ifstream in("fact.in");
ofstream out("fact.out");
long n,p,i,e=5,f=0,s=0,x=0,j=1;
in>>p;
i=1;
   while(s!=p)
    {
        i=1;
	if(j%e==0){
		f++;
		i=i+f;
		e=e*5;

	}
	s=s+i;
	x++;
	j++;
	if(s>p)
	out<<-1<<"\n";
    }
   out<<x*5<<"\n";
   in.close();
   out.close();
   return 0;
}