Rectangles and Square
You are given n rectangles, labeled 1 through n. The corners of rectangles have integer coordinates and their edges are parallel to the Ox and Oy axes. The rectangles may touch each […]
Rectangles
Rooks and Rectangles
Polycarpus has a chessboard of size n × m, where k rooks are placed. Polycarpus hasn’t yet invented the rules of the game he will play. However, he has already […]
