568E
CF568E Longest Increasing Subsequence 题解
Longest Increasing Subsequence LIS 问题有两种主流 \(O(n\log n)\) 解法，最常见的树状数组法，以及不那么常见的二分法。然后考虑本题，发现一个神奇的思路就是求出 LIS 后倒序复原出数组。 进一步思考后发现，因为本题是 LIS（Longest Incre ......
[CF568E] Longest Increasing Subsequence
题目描述 Note that the memory limit in this problem is less than usual. Let's consider an array consisting of positive integers, some positions of which c ......