Cod sursa(job #1340611)

Utilizator kira2071Diana C kira2071 Data 11 februarie 2015 22:12:00
Problema Factorial Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.3 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
#include <math.h>
using namespace std;

int main()
{int p,n,k=2;
ifstream f("fact.in");
ofstream g("fact.out");
f>>p;
if(p==0)
    g<<"1";
else
    {n=5*p;
    while(pow(5,k)<=n)
        {n-=5*(k-1);
        k++;}
    g<<n;
    }

return 0;
}