hello world

Red and Black Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 14566    Accepted Submission(s): 9023 Problem Description There is a rect

Description The GeoSurvComp geologic survey company is responsible for detecting underground oil deposits. GeoSurvComp works with one large rectangular region of land at a time, and creates a grid

Description 呃......变形课上Harry碰到了一点小麻烦,因为他并不像Hermione那样能够记住所有的咒语而随意的将一个棒球变成刺猬什么的,但是他发现了变形咒语的一个统一规律:如果咒语是以a开头b结尾的一个单词,那么它的作用就恰好是使A物体变成B物体.  Harry已经将他所会的所有咒语都列成了一个表,他想让你帮忙计算一下他是否能完成老师的作业,将一个B(ball)变成一

Description Farmer John's farm was flooded in the most recent storm, a fact only aggravated by the information that his cows are deathly afraid of water. His insurance agency will only repay him,

Description   小火山最近喜欢上了围棋。   对于围棋，其实小火山是一窍不通的。现在棋盘上，有很多小火山的棋子。 如果棋盘上有这样的一个位置， 那么这个位置也会变成小火山 的棋子；这样的位置是指小火山的棋子将该位置围起来。   现在，小火山想知道实际棋盘是什么样子的。 你快来帮帮他吧！ Input 输入第一行是一个整数T（T 每组数据，第一行为两个整数n

Description Fox Ciel is playing a mobile puzzle game called "Two Dots". The basic levels are played on a board of size n × m cells, like this: Each cell contains a dot that has some color. We wi