2023年11月26日
D. Ones and Twos
摘要： D. Ones and Twos You are given a $1$-indexed array $a$ of length $n$ where each element is $1$ or $2$. Process $q$ queries of the following two types: 阅读全文
posted @ 2023-11-26 21:17 onlyblues 阅读(28) 评论(0) 推荐(0) 编辑
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