摘要：Check If Digits Are Equal in String After Operations II You are given a string s consisting of digits. Perform the following operation repeatedly unti 阅读全文

摘要：D. Eating There are $n$ slimes on a line, the $i$-th of which has weight $w_i$. Slime $i$ is able to eat another slime $j$ if $w_i \geq w_j$; afterwar 阅读全文

摘要：Viva La Vida(Fried-Chicken's Version) 题目描述 鸡王国有 $n$ 个城市，编号分别为 $1,2, \dots n$，初始城市之间没有任何道路连接。为了灾后重建，鸡国王决定在一些城市之间修建双向道路，于是他请首席工程师瓦爵鸡根据王国的地形地貌特征，对在城市之间修建 阅读全文

摘要：H. Bro Thinks He's Him Skibidus thinks he's Him! He proved it by solving this difficult task. Can you also prove yourself? Given a binary string$^{\te 阅读全文

摘要：Maximum Difference Between Even and Odd Frequency II You are given a string s and an integer k. Your task is to find the maximum difference between th 阅读全文