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题目描述 在MarsMar**s星球上，每个MarsMar**s人都随身佩带着一串能量项链。在项链上有NN颗能量珠。能量珠是一颗有头标记与尾标记的珠子，这些标记对应着某个正整数。并且，对于相邻的两颗珠子，前一颗珠子的尾标记一定等于后一颗珠子的头标记。因为只有这样，通过吸盘（吸盘是MarsMar**s 阅读全文
posted @ 2021-04-14 16:04
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You are given three integers a, 𝑏b and c. Find two positive integers x and y (x>0, y>0) such that: the decimal representation of x without leading ze 阅读全文
posted @ 2021-04-14 14:27
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You have a card deck of n cards, numbered from top to bottom, i. e. the top card has index 1and bottom card — index n. Each card has its color: the 𝑖 阅读全文
posted @ 2021-04-14 13:24
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Let's define the cost of a string 𝑠s as the number of index pairs i and j (1≤i<j<|s|) such that si=sj and si+1=sj+1. You are given two positive integ 阅读全文
posted @ 2021-04-14 09:18
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