题库—HDOJ - 随笔分类(第2页) - 脂环

HDU6892 2020中国大学生程序设计竞赛（CCPC） - 网络选拔赛 1005. Lunch（博弈/SG函数）

摘要：Problem Description Now it's time for lunch. Today's menu is chocolate! Though every baby likes chocolate, the appetites of babies are little. After l 阅读全文

posted @ 2021-05-05 21:39 脂环阅读(195) 评论(0) 推荐(0) 编辑

HDU3032 Nim or not Nim?（博弈/Multi-SG游戏）

摘要：Problem Description Nim is a two-player mathematic game of strategy in which players take turns removing objects from distinct heaps. On each turn, a 阅读全文

posted @ 2021-05-04 23:43 脂环阅读(50) 评论(0) 推荐(0) 编辑

HDOJ2089. 不要62（数位DP）

摘要：Problem Description 杭州人称那些傻乎乎粘嗒嗒的人为62（音：laoer）。杭州交通管理局经常会扩充一些的士车牌照，新近出来一个好消息，以后上牌照，不再含有不吉利的数字了，这样一来，就可以消除个别的士司机和乘客的心理障碍，更安全地服务大众。不吉利的数字为所有含有4或62的号码。阅读全文

posted @ 2021-04-28 17:32 脂环阅读(51) 评论(0) 推荐(0) 编辑

HDU6570 Wave（DP）

摘要：Avin is studying series. A series is called "wave" if the following conditions are satisfied: It contains at least two elements; All elements at odd p 阅读全文

posted @ 2021-04-23 10:12 脂环阅读(62) 评论(0) 推荐(0) 编辑

2020杭电多校第八场—Fluctuation Limit

摘要：Cuber QQ has signed up for a gambling game, that challenges him to predict the stock price of Quber CC Limited, for the next following n days. He shal 阅读全文

posted @ 2020-08-13 17:43 脂环阅读(281) 评论(0) 推荐(0) 编辑

2020杭电多校第八场—Clockwise or Counterclockwise（几何）

摘要：After some basic geometric lessons, Cuber QQ has learned that one can draw one and only one circle across three given distinct points, on a 2D plane. 阅读全文

posted @ 2020-08-13 17:30 脂环阅读(306) 评论(0) 推荐(0) 编辑

HDU6832 A Very Easy Graph Problem（最小生成树）

摘要：Problem Description An undirected connected graph has n n nodes and m m edges, The i -th edge’s length is

2^{i}

$2^i$ , Each node i has a value

a_{i}

$a_i$ , whi 阅读全文

posted @ 2020-08-07 00:27 脂环阅读(225) 评论(0) 推荐(0) 编辑

HDU6835 Divisibility（数论/思维）

摘要：Problem Description You are given two 10-based integers b and x, and you are required to determine the following proposition is true or false: For arb 阅读全文

posted @ 2020-08-06 21:35 脂环阅读(294) 评论(0) 推荐(1) 编辑

HDU6828 Little Rabbit's Equation（简单模拟）

摘要：Problem Description Little Rabbit is interested in radix. In a positional numeral system, the radix is the number of unique digits, including the digi 阅读全文

posted @ 2020-08-06 18:56 脂环阅读(412) 评论(0) 推荐(1) 编辑

HDU6822 Paperfolding（思维/排列组合/逆元）

摘要：There is a piece of paper in rectangular shape with sufficient length and width (lay flat on the table). Execute an operation instruction according to 阅读全文

posted @ 2020-08-05 17:18 脂环阅读(232) 评论(0) 推荐(0) 编辑

HDU6814 Tetrahedron（几何/数论/逆元）

摘要：Generate three integers

a

$a$ ,

b

$b$ , and

c

$c$ in

[1, n]

$[1,n]$ with equal probability independently, and use them as the three right-angle side length o 阅读全文

posted @ 2020-08-05 16:35 脂环阅读(205) 评论(0) 推荐(0) 编辑

HDU6805 Deliver the Cake（最短路/思维）

摘要：It is Zhang3's birthday! Zhang3 has bought a birthday cake and now it's time to take it home. There are n villages, labeled 1,2,…,n. There are m bidir 阅读全文

posted @ 2020-07-30 23:03 脂环阅读(372) 评论(1) 推荐(0) 编辑

HDU6812 Kindergarten Physics（假物理题真思维）

摘要：Zhang3 a participant of IPhO (Immortal Physics Olympiad). The

0^\mathrm

$0^\mathrm$ problem in the contest is as follows. There are two balls that weigh

a

$a$ k 阅读全文

posted @ 2020-07-30 20:07 脂环阅读(278) 评论(0) 推荐(0) 编辑

HDU6803 Blow up the Enemy（贪心/概率）

摘要：Problem Description Zhang3 is playing a shooting game with Father. In the game there are two players trying to kill each other to win the game. The ga 阅读全文

posted @ 2020-07-30 20:00 脂环阅读(305) 评论(0) 推荐(0) 编辑

HDU6797 Tokitsukaze and Rescue（最短路/DFS/暴力）

摘要：Princess CJB has lived almost her entire life in the isolated town of Ertona, where CJB uses her unique ability to recognize where crystals of materia 阅读全文

posted @ 2020-07-30 00:23 脂环阅读(249) 评论(0) 推荐(0) 编辑

HDU6795 Little W and Contest （带权并查集/排列组合/组合数取模）

摘要：There are n members in our ACM club. Little W wants to select three persons from our club to form a new team taking part in provincial ACM contests, a 阅读全文

posted @ 2020-07-29 21:21 脂环阅读(277) 评论(0) 推荐(1) 编辑

HDU6799 Parentheses Matching（贪心/括号匹配）

摘要：Given a string P consisting of only parentheses and asterisk characters (i.e. "(", ")" and ""), you are asked to replace all the asterisk characters i 阅读全文

posted @ 2020-07-29 11:28 脂环阅读(469) 评论(0) 推荐(0) 编辑

HDU6768 The Oculus（Hash）

摘要：Let's define the Fibonacci sequence

F_{1}, F_{2}, \dots

$F_1,F_2,\dots$ as

F_{1} = 1, F_{2} = 2, F_{i} = F_{i - 1} + F_{i - 2}

$F_1=1,F_2=2,F_i=F_{i-1}+F_{i-2}$ (

i \geq 3

$i\geq 3$ ). It's well known that every positive intege 阅读全文

posted @ 2020-07-27 17:02 脂环阅读(232) 评论(0) 推荐(0) 编辑

HDU6672 Lead of Wisdom（爆搜）

摘要：Lead of Wisdom In an online game, "Lead of Wisdom" is a place where the lucky player can randomly get powerful items. There are k types of items, a pl 阅读全文

posted @ 2020-07-27 09:05 脂环阅读(167) 评论(0) 推荐(0) 编辑

2020杭电多校第一场 1004 Distinct Sub-palindromes（思维/构造）

摘要：Problem Description S is a string of length n. S consists of lowercase English alphabets. Your task is to count the number of different S with the min 阅读全文

posted @ 2020-07-21 18:54 脂环阅读(437) 评论(0) 推荐(0) 编辑

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