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摘要： 2025.1.21——1300 A 1300 Qingshan has a string \(s\) which only contains \(\texttt{0}\) and \(\texttt{1}\). A string \(a\) of length \(k\) is good if an 阅读全文

摘要： 2025.1.20——1300 A 1300 You are given a binary string \(s\). A binary string is a string consisting of characters 0 and/or 1. You can perform the follo 阅读全文

摘要： 2025.1.19——1300 A 1300 You are given an array \(a\) consisting of \(n\) positive integers. You can perform the following operation on it: Choose a pai 阅读全文

摘要： 2025.1.18——1300 A 1300 There are \(n\) cities located on the number line, the \(i\)-th city is in the point \(a_i\). The coordinates of the cities are 阅读全文

摘要： 2025.1.17——1200 Q1. 1200 Jellyfish has \(n\) green apples with values \(a_1, a_2, \dots, a_n\) and Gellyfish has \(m\) green apples with values \(b_1, 阅读全文

摘要： 2025.1.16——1200 Q1. 1200 You are given \(3\) integers — \(n\), \(x\), \(y\). Let's call the score of a permutation\(^\dagger\) \(p_1, \ldots, p_n\) th 阅读全文

摘要： 2025.1.15——1200 Q1. 1200 简单来说就是给定3个数组，每个数组选择一个数，三者下标不同，问三者和的最大值。 Winter holidays are coming up. They are going to last for \(n\) days. During the holi 阅读全文

摘要： 2025.1.14——1200 Q1. 1200 You have \(n\) sticks, numbered from \(1\) to \(n\). The length of the \(i\)-th stick is \(2^{a_i}\). You want to choose exac 阅读全文

摘要： 2025.1.12——1200 Q1. 1200 You are given a sequence \(a\), consisting of \(n\) integers, where the \(i\)-th element of the sequence is equal to \(a_i\). 阅读全文

摘要： 2025.1.5——1200 Q1. 1200 Kevin discovered a binary string $s$ that starts with 1 in the river at Moonlit River Park and handed it over to you. Your tas 阅读全文