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题目链接：Kilani and the Game 题目原文 Kilani is playing a game with his friends. This game can be represented as a grid of size 𝑛×𝑚, where each cell is eith 阅读全文
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题目链接：Zuhair and Strings 题目原文 Given a string 𝑠 of length 𝑛 and integer 𝑘 (1≤𝑘≤𝑛). The string 𝑠 has a level 𝑥, if 𝑥 is largest non-negative inte 阅读全文
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题目链接：Salem and Sticks 题目原文 Salem gave you 𝑛n sticks with integer positive lengths 𝑎1,𝑎2,…,𝑎𝑛a1,a2,…,an. For every stick, you can change its lengt 阅读全文