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Description The game “The Pilots Brothers: following the stripy elephant” has a quest where a player needs to open a refrigerator. There are 16 handle 阅读全文
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[toc] Description 给定两个下标从$1$到$n$编号的序列 $a_i,b_i$，定义函数$S(l,r)(1\le l\le r\le n)$为： $$\sum_{i=l}^r a_i\times \sum_{i=l}^r b_i$$ 请你求出下列式子的值： $$\sum_{l=1}^ 阅读全文
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Description $Emiya$是个擅长做菜的高中生，他共掌握$n$种烹饪方法，且会使用$m$种主要食材做菜。为了方便叙述，我们对烹饪方法从$1 \sim n$编号，对主要食材从$1 \sim m$编号。 $Emiya$做的每道菜都将使用恰好一种烹饪方法与恰好一种主要食材。更具体地，$Emiy 阅读全文
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Description 小明过生日的时候，爸爸送给他一副乌龟棋当作礼物。 乌龟棋的棋盘是一行$N$个格子，每个格子上一个分数（非负整数）。棋盘第$1$格是唯一的起点，第$N$格是终点，游戏要求玩家控制一个乌龟棋子从起点出发走到终点。 乌龟棋中$M$张爬行卡片，分成$4$种不同的类型（$M$张卡片中不 阅读全文
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Description Flip game is played on a rectangular 4x4 field with two sided pieces placed on each of its 16 squares. One side of each piece is white and 阅读全文
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Description Let's play a card game called Gap. You have 28 cards labeled with two digit numbers. The first digit (from 1 to 4) represents the suit of 阅读全文
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Description Tram network in Zagreb consists of a number of intersections and rails connecting some of them. In every intersection there is a switch po 阅读全文
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Description "Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly touching his little ducks' head, he told 阅读全文