import java.awt.*; 

class Block {
  final static int SIZE = 20; // pixels 
  int x, y;
  Color color; 
  Block(int x, int y, Color c) {
    this.x = x;
    this.y = y;
    this.color = c; 
  }
  void draw(Graphics g) {
    int xp = this.x * SIZE + SIZE/2, yp = this.y * SIZE + SIZE / 2;
    g.setColor(this.color);     
    g.fillRect(xp, yp, SIZE, SIZE); 
    g.setColor(Color.BLACK); 
    g.drawRect(xp, yp, SIZE, SIZE); 
  }
  void move(int dx, int dy) {
    this.x += dx; 
    this.y += dy; 
  }
}