TopCoder SRM 146 Division 2 500 pts.

SRM_146_Div2_500.cpp

class RectangularGrid {
 public:
  long long countRectangles(int width, int height) {
    long long count = 0;
    
    for(int w = 0; w < width; ++w) {
      for(int h = 0; h < height; ++h) {
        if( w == h ) continue;
        count += (height-h) * (width-w);
      }
    }    
    
    return count;
  }
};