Bazen (jednostavnija varijanta) (O)

#include <iostream>
using namespace std;
main()
{
      int x, y, z, m, n, s = 0, p = 0, br_plocica, a;

      cin >> x >> y >> z >> m >> n;

      a = x;
      do
      {
           s = s + 1;
           a = a - m;
      }
      while (a>0);

      a = y;
      do
      {
           p = p + 1;
           a = a - n;
      }
      while (a>0);

      br_plocica = p * s;
      p = 0; s = 0;

      a = x;
      do
      {
           s = s + 1;
           a = a - m;
      }
      while (a>0);

      a = z;
      do
      {
           p = p + 1;
           a = a - n;
      }
      while (a>0);

      br_plocica += 2 * p * s;
      p = 0; s = 0;

      a = y;
      do
      {
           s = s + 1;
           a = a - m;
      }
      while (a>0);

      a = z;
      do
      {
           p = p + 1;
           a = a - n;
      }
      while (a>0);

      br_plocica += 2 * p * s;

      cout << br_plocica << endl;

      system("PAUSE");
}