This is a hard version of Ep. 67. If you prefer an easier problem, please see OBCYSIO67. Meeting Point Given a directed graph G of n vertices and m edges. A single vertex S is called the starting point and a single vertex T is called the finish poi……

Solved! Difficulty: D2C Pretty basic exercise problem from FLA This is an easy version of Ep. 68. If you prefer harder problems, please visit here. Meeting Point Given a directed graph G of n vertices and m edges. A single vertex S is called ……

Solved! Difficulty: Div2C Classic 思考题 HP You are given a grid of n*m cells. You start from a starting cell S and can move up, down, left or right in one step without leaving the grid. Find: is it possible to visit each cell once and exactl……

Solved Difficulty: D2C 思考题 inspired by Saionji Video Channel Eastmost Eki There are n points on a 2D plane. You can select any real point as pivot in the rectangle bounded by (a,b) and (c,d) and rotate the entire plane by d degree clockwis……

思考题 inspired by car lanes Car Lane In Ryuto the capital of the Dragon Kingdom, there is an intersection with k+1 exits. On one lane of one exit, there is a queue of n cars. The i-th car in the queue wants to go in the direction d_i (1\leq d_i\le……

Solved Difficulty: D2C-D2D 思考题 inspired by Create Mod Assembly Line There is an assembly line consisting of n machines. The i-th machine on the line holds an infinitely long input queue and a processing time of t_i seconds. The machines wo……

没错 本文标题就是搞笑的 前言 相比较单机游戏，联网多人游戏要考虑的事情就多了：如何在多个玩家之间正确的同步游戏状态、如何处理玩家掉线和重连、如何防止网络延迟给玩家带来的不好体验。因此，编写多人游戏时，其业务逻辑常常比单人游戏更加复杂，许多时候不得不……

Noyuki 「大家都学过泳ぐ这个单词吧。大家看到这个单词的时候，肯定就会想，他不就是游泳的意思吗，有什么特殊的呢？」 Noyuki 「其实，语言学家研究这个词比你想象的更加深入哦。比如说，泳ぐ可以指“人类和动物用手足等在水中或水面中移动的动作”、可以指“オ　ヨ　グ……

女性语 用来表示传统的女性、公主、贵族女性等： 「わ」「かしら」「ですわ」 例：　「そうだわ」　「おいしいですこと」 男性语 用来表现粗犷的形象，例如热血青年、武士等 「ぜ」「ぞ」「だ」 例：　「いくぞ！」　「俺がやる！」 老人语 江户时代上方语的表现，用……

国字 Noyuki 「国字（こくじ）是日本人按照“六书”中的方法，特别是会意的方法创造出来的汉字，用来表达日本特有的概念。因此，国字多见于鱼、草、木等。例如：樫（かし）显然指的是某种“坚硬的树木”、鱈（だら）指的是下雪的时候出现的鱼。你猜猜，总共有多少国字？」……