u013023344的专栏

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 注意:本题的输入数据较多,推荐使用scanf读入数据.   Output 对于每组测试数据,请计算出被这些矩形覆盖过至少两次的区域的面积.结果保留两位小数.   Sample Input 2 5 1 1 4 2 1 3

Description ACM has bought a new crane (crane -- jeřáb) . The crane consists of n segments of various lengths, connected by flexible joints. The end of the i-th segment is joined to the beginning of

Description Every year, Farmer John's N (1 <= N <= 20,000) cows attend "MooFest",a social gathering of cows from around the world. MooFest involves a variety of events including haybale stacking, fen

nteresting Array time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output We'll call an array of n non-negative integers a[1], a

Description Iahub likes trees very much. Recently he discovered an interesting tree named propagating tree. The tree consists of n nodes numbered from 1 to n, each node i having an initial val

Description Railway tickets were difficult to buy around the Lunar New Year in China, so we must get up early and join a long queue… The Lunar New Year was approaching, but unluckily the Little Ca

Description There is a number of disjoint vertical line segments in the plane. We say that two segments are horizontally visible if they can be connected by a horizontal line segment that does not ha

Mad scientist Mike has constructed a rooted tree, which consists of n vertices. Each vertex is a reservoir which can be either empty or filled with water. The vertices of the tree are numbered from

输入n个矩形，求并在一起的总面积。

Harry And Math Teacher Time Limit: 5000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 76    Accepted Submission(s): 17 Problem Description As we all k