Cod sursa(job #871212)

Utilizator alex14Sfirlea alex alex14 Data 4 februarie 2013 16:31:11
Problema Factorial Scor 5
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.29 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    long p,i=1,x,s=0;
    ifstream f("fact.in");
    ofstream g("fact.out");
    f>>p;
    x=p*5;
    while(i<x)
    {
        i*=5;
        s++;
    }
    s--;
    g<<x-((s*(s-1))/2)*5;
    return 0;
}