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Moamen was drawing a grid of 𝑛n rows and 109109 columns containing only digits 00 and 11. Ezzat noticed what Moamen was drawing and became interested 阅读全文
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链接：https://ac.nowcoder.com/acm/contest/11260/E 来源：牛客网 题目描述 There are n cities in the volcano country, numbered from 1 to n. The city 1 is the capital 阅读全文
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Moamen and Ezzat are playing a game. They create an array 𝑎a of 𝑛n non-negative integers where every element is less than 2𝑘2k. Moamen wins if 𝑎1& 阅读全文
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Problem Description As an elegant and accomplished girl, Bella loves watching stars at night (especially the Polaris). There are totally n stars in th 阅读全文
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Problem Description Bob accidentally spilled some drops of ink on the paper. The initial position of the i-th drop of ink is (xi,yi), which expands ou 阅读全文
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Problem Description Alice and Bob are playing a game. They take turns to operate. There are n numbers, a1 , a2 , ... , an. Every time, the player play 阅读全文
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Problem Description Eric is playing a game on an infinite plane. On the plane, there is a circular area with radius r1 called the Scoring Area. Every 阅读全文
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链接：https://ac.nowcoder.com/acm/contest/11256/D 来源：牛客网 题目描述 Given two strings A,BA,B, and little H wants to choose a subsequence from {1,2,⋯ ,∣A∣}{1,2, 阅读全文
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链接：https://ac.nowcoder.com/acm/contest/11259/K 来源：牛客网 题目描述 On a distant planet of dreams, Toilet-Ares is packing up the things and memories, ready to 阅读全文
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链接：https://ac.nowcoder.com/acm/contest/11259/D 来源：牛客网 题目描述 There are two sequences of length n−1n−1, b=(b2,b3,…,bn)b=(b2,b3,…,bn), c=(c2,c3,…,cn)c=(c2 阅读全文