public static void main(String[] args) {

 int MAX=30000;  //odhad horní hodnoty, na brigadach se vic neplati.
for (int marek = 0; marek <MAX; marek++) {
        for (int milan = 0; milan < MAX; milan++) {
          if (((milan)==marek+500)&&((1.5*(marek+300))==(milan+300)))
          {
          System.out.println("Marek :"+marek);
          System.out.println("Milan :"+milan);
          // neexitujem, kdyby bylo vice reseni
          }
     }
  }
    }