2 lygis | 1 pamoka| Plytelės

#include <fstream>
using namespace std;

const char duom[] = "Duomenys.txt";
const char rez[] = "Rezultatai.txt";

int kiek_reikes_plyteliu(const int x, const int y, int sx, int sy) {
    int rez1, rez2;
    sx *= 100;
    sy *= 100;
    rez1 = (sx/x+(sx%x == 0 ? 0 : 1)) * (sy/y+(sy%y == 0 ? 0 : 1));
    rez2 = (sx/y+(sx%y == 0 ? 0 : 1)) * (sy/x+(sy%x == 0 ? 0 : 1));
    return rez1 > rez2 ? rez2 : rez1;
}

/* Dar vienas variantas:
int kiek_reikes_plyteliu(int x, int y, int Sx, int Sy)
{
    int Dx, Dy, Lx, Ly;

    Lx = Sx * 100 / x ;
    Ly = Sy * 100 / y ;

    Dx = (Sx * 100) % x;
    Dy = (Sy * 100) % y;

    if (Dx != 0)
        Lx++;

    if (Dy != 0)
        Ly++;

    return Lx * Ly;
}
*/

int main() {
    int x, y, sx, sy;
    ifstream in(duom);
    ofstream out(rez);
    while( in >> x >> y >> sx >> sy )
        out << kiek_reikes_plyteliu(x, y, sx, sy) << endl;
    return 0;
}