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Nura wants to buy k gadgets. She has only sburles for that. She can buy each gadget for dollars or for pounds. So each gadget is selling only for some 阅读全文
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Vasya follows a basketball game and marks the distances from which each team makes a throw. He knows that each successful throw has value of either 2 阅读全文
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Carries frog has nn integers a1,a2,…,ana1,a2,…,an, and she wants to add them pairwise. Unfortunately, frog is somehow afraid of carries (进位). She defi 阅读全文
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Every year the cows hold an event featuring a peculiar version of hopscotch that involves carefully jumping from rock to rock in a river. The exciteme 阅读全文
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It is very hard to wash and especially to dry clothes in winter. But Jane is a very smart girl. She is not afraid of this boring process. Jane has dec 阅读全文
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在上一回和上上回里我们知道Nettle在玩《艦これ》，Nettle在整理好舰队之后终于准备出海捞船和敌军交战了。在这个游戏里面，海域是N个战略点(编号1..N)组成，如下图所示其中红色的点表示有敌人驻扎，猫头像的的点表示该地图敌军主力舰队(boss)的驻扎点，虚线表示各个战略点之间的航线(无向边)。 阅读全文
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There are N points in total. Every point moves in certain direction and certain speed. We want to know at what time that the largest distance between 阅读全文
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Josephina is a clever girl and addicted to Machine Learning recently. She pays much attention to a method called Linear Discriminant Analysis, which h 阅读全文
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As a fan of Doudizhu, WYJ likes collecting playing cards very much. One day, MJF takes a stack of cards and talks to him: let's play a game and if you 阅读全文