getAC

LightOJ - 1056 Olympics Time Limit: 500MS   Memory Limit: 32768KB   64bit IO Format: %lld & %llu Submit Status Description The next Olympic is approaching very sho

凸包周长(codevs 1298) Description     给出平面上n个点，求出这n个点形成的凸包的周长。凸包的定义：能覆盖住这个n个点的最小凸多边形。 Input Description     第一行一个整数n,接下来n行，每行两个整数x和y，表示一个点的坐标。     数据范围 1     -10000 Output Description

设两个矢量P(x1,y1),Q(x2,y2):用途1：求面积计算面积：P X Q = x1y2 - x2y1的就是一个标量，表示的就是以(0,0), p1, p2和p1+p2构成的平行四边形用途2：判断点在线段的位置　(1). P x Q > 0; 表示P在Q的顺时针方向; 　(2). p x Q < 0; 表示P在Q的逆时针方向; 　(3). P x Q = 0; 表示P和Q是共线的，但是可能

1062 - Crossed Ladders    A narrow street is lined with tall buildings. An xfoot long ladder is rested at the base of the building on the right side of thestreet and leans on the building on the left

1874. Football Goal Time limit: 0.5 second Memory limit: 64 MB    Unlike most students of the Mathematical Department, Sonya is fond of not only programming but also sports. One fine day sh

Segments Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 12062   Accepted: 3816 Description Given n segments in the two dimensional space, write a program,

Art Gallery This problem will be judged on PKU. Original ID: 1279 64-bit integer IO format: %lld      Java class name: Main Prev  Submit Status Statistics Discuss  Next The art galle

题目来源：Gym100002B Input file: bricks.in Output file: bricks.out Bricks The prisoner of the “IF” castle has decided to run away by disassembling the brick wall in his prison cell. To hide his work