Cod sursa(job #1061458)

Utilizator ValeraShulghin Valera Valera Data 19 decembrie 2013 20:09:31
Problema Factorial Scor 5
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream f("fact.in");
ofstream g("fact.out");
long long n,i,p,ad,k;

int main()
{
    f>>p;
    k=25;ad=1;n=0;i=0;
    while(i<p)
    {
        i++;
        n=n+5;
        if ((n%k)==0)
        {
            i+=ad;
            ad+=1;
            k*=5;
        }
    }
    g<<n;
    return 0;
}