Codeforces - 随笔分类(第8页) - onlyblues

摘要：A. Lame King You are given a checkerboard of size

201 \times 201

$201 \times 201$ , i. e. it has

201

$201$ rows and

201

$201$ columns. The rows of this checkerboard are numbe 阅读全文

posted @ 2023-03-14 17:07 onlyblues 阅读(57) 评论(0) 推荐(0) 编辑

D. Buying gifts

摘要：D. Buying gifts Little Sasha has two friends, whom he wants to please with gifts on the Eighth of March. To do this, he went to the largest shopping c 阅读全文

posted @ 2023-03-09 23:43 onlyblues 阅读(293) 评论(2) 推荐(0) 编辑

F. Dasha and Nightmares

摘要：F. Dasha and Nightmares Dasha, an excellent student, is studying at the best mathematical lyceum in the country. Recently, a mysterious stranger broug 阅读全文

posted @ 2023-03-04 16:43 onlyblues 阅读(100) 评论(0) 推荐(0) 编辑

D. Remove Two Letters

摘要：D. Remove Two Letters Dmitry has a string

s

$s$ , consisting of lowercase Latin letters. Dmitry decided to remove two consecutive characters from the str 阅读全文

posted @ 2023-03-04 14:36 onlyblues 阅读(167) 评论(0) 推荐(0) 编辑

D. Maximum Subarray

摘要：D. Maximum Subarray You are given an array

a_{1}, a_{2}, \dots, a_{n}

$a_1, a_2, \dots, a_n$ , consisting of

n

$n$ integers. You are also given two integers

k

$k$ and

x

$x$ . You have t 阅读全文

posted @ 2023-03-04 10:14 onlyblues 阅读(138) 评论(0) 推荐(0) 编辑

C. Maximum Set

摘要：C. Maximum Set A set of positive integers

S

$S$ is called beautiful if, for every two integers

x

$x$ and

y

$y$ from this set, either

x

$x$ divides

y

$y$ or

y

$y$ 阅读全文

posted @ 2023-03-03 21:53 onlyblues 阅读(74) 评论(0) 推荐(0) 编辑

D. Serval and Shift-Shift-Shift

摘要：D. Serval and Shift-Shift-Shift Serval has two

n

$n$ -bit binary integer numbers

a

$a$ and

b

$b$ . He wants to share those numbers with Toxel. Since Toxel lik 阅读全文

posted @ 2023-03-01 21:05 onlyblues 阅读(69) 评论(0) 推荐(0) 编辑

D. Triangle Coloring

摘要：D. Triangle Coloring You are given an undirected graph consisting of

n

$n$ vertices and

n

$n$ edges, where

n

$n$ is divisible by

6

$6$ . Each edge has a weight 阅读全文

posted @ 2023-02-18 16:19 onlyblues 阅读(63) 评论(0) 推荐(0) 编辑

D. Moscow Gorillas

摘要：D. Moscow Gorillas In winter, the inhabitants of the Moscow Zoo are very bored, in particular, it concerns gorillas. You decided to entertain them and 阅读全文

posted @ 2023-02-13 17:52 onlyblues 阅读(151) 评论(0) 推荐(0) 编辑

B. Fedya and Array

摘要：B. Fedya and Array For his birthday recently Fedya was given an array

a

$a$ of

n

$n$ integers arranged in a circle, For each pair of neighboring numbers ( 阅读全文

posted @ 2023-02-13 16:22 onlyblues 阅读(56) 评论(0) 推荐(0) 编辑

B. Jumbo Extra Cheese 2

摘要：B. Jumbo Extra Cheese 2 Pak Chanek has

n

$n$ two-dimensional slices of cheese. The

i

$i$ -th slice of cheese can be represented as a rectangle of dimension 阅读全文

posted @ 2023-02-11 22:06 onlyblues 阅读(48) 评论(0) 推荐(0) 编辑

D. Moving Dots

摘要：D. Moving Dots We play a game with

n

$n$ dots on a number line. The initial coordinate of the

i

$i$ -th dot is

x_{i}

$x_i$ . These coordinates are distinct. Every 阅读全文

posted @ 2023-02-11 21:13 onlyblues 阅读(55) 评论(0) 推荐(0) 编辑

B. Sum of Two Numbers

摘要：B. Sum of Two Numbers The sum of digits of a non-negative integer

a

$a$ is the result of summing up its digits together when written in the decimal syst 阅读全文

posted @ 2023-02-11 13:10 onlyblues 阅读(183) 评论(1) 推荐(1) 编辑

E. Sum Over Zero

摘要：E. Sum Over Zero You are given an array

a_{1}, a_{2}, \dots, a_{n}

$a_1, a_2, \ldots, a_n$ of

n

$n$ integers. Consider

S

$S$ as a set of segments satisfying the following conditions 阅读全文

posted @ 2023-02-10 20:54 onlyblues 阅读(91) 评论(0) 推荐(1) 编辑

D. Lucky Permutation

摘要：D. Lucky Permutation You are given a permutation

^{†}

$^\dagger$

p

$p$ of length

n

$n$ . In one operation, you can choose two indices

1 \leq i < j \leq n

$1 \le i < j \le n$ and swa 阅读全文

posted @ 2023-02-09 19:13 onlyblues 阅读(53) 评论(0) 推荐(0) 编辑

E. Monsters (hard version)

摘要：E. Monsters (hard version) This is the hard version of the problem. In this version, you need to find the answer for every prefix of the monster array 阅读全文

posted @ 2023-02-07 22:00 onlyblues 阅读(177) 评论(0) 推荐(0) 编辑

G2. Teleporters (Hard Version)

摘要：G2. Teleporters (Hard Version) The only difference between the easy and hard versions are the locations you can teleport to. Consider the points $0,1, 阅读全文

posted @ 2023-02-04 21:56 onlyblues 阅读(174) 评论(0) 推荐(0) 编辑

E. Negatives and Positives

摘要：E. Negatives and Positives Given an array

a

$a$ consisting of

n

$n$ elements, find the maximum possible sum the array can have after performing the follow 阅读全文

posted @ 2023-02-04 15:56 onlyblues 阅读(77) 评论(0) 推荐(0) 编辑

C. Remove the Bracket

摘要：C. Remove the Bracket RSJ has a sequence

a

$a$ of

n

$n$ integers

a_{1}, a_{2}, \dots, a_{n}

$a_1,a_2, \ldots, a_n$ and an integer

s

$s$ . For each of

a_{2}, a_{3}, \dots, a_{n - 1}

$a_2,a_3, \ldots, a_{n-1}$ , he cho 阅读全文

posted @ 2023-01-31 16:31 onlyblues 阅读(73) 评论(0) 推荐(0) 编辑

F. Timofey and Black-White Tree

摘要：F. Timofey and Black-White Tree Timofey came to a famous summer school and found a tree on

n

$n$ vertices. A tree is a connected undirected graph withou 阅读全文

posted @ 2023-01-30 19:01 onlyblues 阅读(119) 评论(0) 推荐(0) 编辑

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