09 2017 档案

摘要：线段树基础入门 https://www.2cto.com/kf/201608/532990.html 线段树之延迟标记（区间修改） /* 延迟标记（lazy Tag） 延迟标记作用于递归过程中，如果当前区间被需要修改的目标区间完全覆盖，那么就可停>止递归，做一个延迟标记，但是这个信息没有更新到其下每 阅读全文

摘要：A. Odds and Ends time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Where do odds begin, and 阅读全文

摘要：D. Make a Permutation! time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Ivan has an array 阅读全文

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摘要：A. Fake NP time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Tavak and Seyyed are good frie 阅读全文

摘要：A. Arpa and a research in Mexican wave time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Ar 阅读全文

摘要：A. Fraction time limit per test 1 second memory limit per test 512 megabytes input standard input output standard output Petya is a big fan of mathema 阅读全文