Zinc-Acetate

摘要： 题目传送门 codeforces 洛谷 题目大意 给你一个由 $n$ 个正整数组成的数组 $a$ 。在一次操作中，选取 $(i,j)$ ，将 $|a_i-a_j|$ 加到 $a$ 的末尾。你的任务是在执行 $k$ 操作后，最小化最后数组 $a$ 的最小值。 思路 分 阅读全文

摘要： 题目传送门 codeforces 洛谷 题面 For an array of integers $[a_1,a_2,\dots ,a_n]$, let's call the value $|a_1-a_2|+|a_2-a_3|+\cdots +|a_{n-1}-a_n|$ the contrast 阅读全文

摘要： 题目传送门 codeforces 洛谷 题面 Alice and Bob are playing a game. They have an array $a_1,a_2,\dots ,a_n$. The game consists of two steps: First, Alice will r 阅读全文

摘要： 题目传送门 codeforces 洛谷 题面 There are $n$ cities located on the number line, the $i$\-th city is in the point $a_i$. The coordinates of the cities are give 阅读全文

摘要： 寄，会写题不会讲 题目传送门 codeforces 洛谷 题面 In this problem, you are initially given an empty multiset. You have to process two types of queries: ADD $x$ — add 阅读全文

摘要： 题目链接 codeforces 洛谷 题面 Winter holidays are coming up. They are going to last for $n$ days. During the holidays, Monocarp wants to try all of these acti 阅读全文