Round_Moon 的博客

Array 题目描述 Yukikaze received an array (a1,a2,⋯an)as a gift. She decided to play with it. The game consists of q turns. In each turn, she will perform some kind of operation (listed below) on all elements in a subarray of a. In this problem, we define tha

K-beautiful Strings 题目描述 You are given a string s consisting of lowercase English letters and a number k. Let’s call a string consisting of lowercase English letters beautiful if the number of occurrences of each letter in that string is divisible by k. Y

Clear the String You are given a string s of length n consisting of lowercase Latin letters. You may apply some operations to this string: in one operation you can delete some contiguous substring of this string, if all letters in the substring you delete

世 上 没 有 绝 望 的 处 境 只 有 对 处 境 绝 望 的 人 题目描述 This year in Equestria was a year of plenty, so Applejack has decided to build some new apple storages. According to the advice of the farm designers, she chose to build two storages with non-zero area: one in the

山再高，往上爬，总能登顶； 路再长，走下去，定能到达。 Codeforces-K-th Not Divisible by n 题目描述 You are given two positive integers n and k. Print the k-th positive integer that is not divisible by n. For example, if n=3, and k=7, then all numbers that are not divisible by 3 are: 1,

山再高，往上爬，总能登顶； 路再长，走下去，定能到达。 Codeforces-Middle Class 题目描述 Many years ago Berland was a small country where only nn people lived. Each person had some savings: the i-th one had aiai burles. The governm...

山再高，往上爬，总能登顶； 路再长，走下去，定能到达。 Codeforces-Level Statistics 题目描述 Polycarp has recently created a new level in this cool new game Berlio Maker 85 and uploaded it online. Now players from all over the worl...