Cod sursa(job #325205)
Utilizator | Data | 19 iunie 2009 15:09:10 | |
---|---|---|---|
Problema | Factorial | Scor | 80 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.33 kb |
#include<fstream>
using namespace std;
int main()
{
ifstream in ("fact.in");
ofstream out ("fact.out");
int P,n,i,e=0;
in>>P;
n=5*P;
for(i=25;i<=n;i+=25)
{ int ii=i;
while((ii!=0)&&(ii%25==0))
{ e++;
n=n-5;
ii=ii/5;}
}
if(P==0) out<<"1";
else
out<<n;
in.close();
out.close();
return 0;
}