摘要：
给定平面上若干矩形,求出被这些矩形覆盖过至少两次的区域的面积. Input输入数据的第一行是一个正整数T(1<=T<=100),代表测试数据的数量.每个测试数据的第一行是一个正整数N(1<=N<=1000),代表矩形的数量,然后是N行数据,每一行包含四个浮点数,代表平面上的一个矩形的左上角坐标和右下 阅读全文
摘要：
There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of the i 阅读全文
摘要：
A. Splits Let's define a split of n as a nonincreasing sequence of positive integers, the sum of which is n. For example, the following sequences are 阅读全文