WebAug 18, 2024 · D1. Burenka and Traditions (easy version) 我们发现一些事实: 1.选取一次三个以上区间和我们选取两个+一个组成的等长区间所消耗的花费是一样的。 也就是说我们最多变换的时候选取长度为2的区间。 2.有一种方式,每一位都异或自己变为0,那么答案上限就是n。 3.如果我们每次都连续选择两位进行异或那么能够优化的方式就是异或两个数 … WebView/Download Code. SUNIL KUMAR. 2024-11-01 11:17:49. Burenka and Traditions (easy version) GNU C++17. 100. View. Download. SUNIL KUMAR.
Codeforces Round #814 (Div. 2) A~D1 - 知乎 - 知乎专栏
WebApr 8, 2024 · Burenka and Traditions (easy version) Toggle site. Catalog. You've read 0 % Song Hayoung. Follow Me. Articles 7183 Tags 191 Categories 64. VISITED. Seoul … Webselect two indices l and r, so that 1 ≤ l ≤ r ≤ n and a non-negative integer x, then. for all l ≤ i ≤ r assign a i := a i ⊕ x, where ⊕ denotes the bitwise XOR operation. It takes ⌈ r − l + 1 2 ⌉ seconds to do this operation, where ⌈ y ⌉ denotes y rounded up to the nearest integer. Help Burenka calculate how much time she ... portable boat seats
Codeforces Round #814 (Div. 2)A~D2 - 掘金 - 稀土掘金
WebAug 17, 2024 · D1 - Burenka and Traditions (easy version)和D2 - Burenka and Traditions (hard version) 问题解析. 题面是说,给你一个长度为n的数组,每次选一个区 … WebNOJ is yet another Online Judge providing you functions like problem solving, discussing, solutions, groups, contests and ranking system. WebD2. Burenka and Traditions (hard version) 题意:给定一个长度为 n (1\le n \le 10^5) 的数组 a_i (0 \le a_i < 2^ {30}) ,每次操作你可以任选一个区间 [l,r] ,然后将区间中的所有数都异或上 x ,即 a_i=a_i\oplus x (l\le i \le r) ,其中 \oplus 表示 按位异或运算 ,每次操作花费 \lceil \cfrac {r-l+1} {2}\rceil ,求将整个数组全部变为 0 所需要的最小花费。 portable boat boarding ramps