입출력 예
rectangles result
[[0, 1, 4, 4], [3, 1, 5, 3]] 14
[[1, 1, 6, 5], [2, 0, 4, 2], [2, 4, 5, 7], [4, 3, 8, 6], [7, 5, 9, 7]] 38