原创 D - Problem D. Euler Function （歐拉函數找規律）
In number theory, Euler's totient function φ(n)φ(n) counts the positive integers up to a given integer nn that are rela
2020-07-06 08:00:11
原创 多校訓練賽：K - Time Zone （擴大再縮小）
Chiaki often participates in international competitive programming contests. The time zone becomes a big problem. Give
2020-07-06 07:20:50
原创 ZCMU-2014: 一生之敵（數學+枚舉）
2014: 一生之敵 Time Limit: 1 Sec Memory Limit: 128 MB Submit: 723 Solved: 116 [Submit][Status][Web Board] Description 轉存失
2020-07-06 07:20:50
原创 L - Left Mouse Button （DFS）
Mine sweeper is a very popular small game in Windows operating system. The object of the game is to find mines, and mar
2020-07-06 07:20:40
1
原创 F - Problem F. Grab The Tree （博弈）
Little Q and Little T are playing a game on a tree. There are nn vertices on the tree, labeled by 1,2,...,n1,2,...,n, c
2020-07-06 07:20:40
原创 L - Problem L. Visual Cube （模擬打印圖）
Little Q likes solving math problems very much. Unluckily, however, he does not have good spatial ability. Everytime he
2020-07-06 07:20:40
原创 mac os安裝Windows系統失敗後不能合併爲一個分區
本人在學校電腦醫院作志願者，經常會遇到很多人拿着mac要求裝Windows系統，這我就很無奈了呀，好好的macos不用非要用windows。那就裝吧。。。。。 其實在此之前我都很順利的將幾臺mac裝過windows，但人總有失敗的。聽我細
2020-07-06 07:20:37
5
原创 杭電多校訓練賽：D - Distinct Values（向左排序+set維護）
Chiaki has an array of nn positive integers. You are told some facts about the array: for every two elements aiai and a
2020-02-21 04:53:04
原创 多校訓練賽1：C. Triangle Partition（按關鍵詞排序？不知道）
Chiaki has 3n3n points p1,p2,…,p3n It is guaranteed that no three points are collinear. Chiaki would like to construct
2020-02-21 04:53:03
原创 PAT：Stack (30)（樹狀數組+二分查找）
Stack is one of the most fundamental data structures, which is based on the principle of Last In First Out (LIFO). Th
2020-02-21 04:53:03
原创 數星星(樹狀數組）
Description 天文學家經常觀察星象圖。星象圖中用平面上的點來表示一顆星星，每一顆星星都有一個笛卡爾座標。設定星星的等級爲其左下角星星的總數。天文學家們想知道星星等級的分佈情況
2020-02-21 04:53:03
原创 ZCMU-1127: 第三章：再見，林靜！
1127: 第三章：再見，林靜！ Time Limit: 10 Sec Memory Limit: 128 MB Submit: 87 Solved: 21 [Submit][Status][Web Board] Descriptio
2020-02-21 04:53:03
原创 ZCMU-2164：去註釋
2164: 去註釋 Time Limit: 1 Sec Memory Limit: 128 MB Submit: 104 Solved: 44 [Submit][Status][Web Board] Description 給你一段C
2020-02-21 04:53:03
原创 ZCMU-1040：二哥的困惑Ⅲ（貪心）
1040: 二哥的困惑 Ⅲ Time Limit: 1 Sec Memory Limit: 128 MBSubmit: 216 Solved: 84 [Submit][Status][Web Board] Description
2020-02-21 04:53:03
原创 前綴和
所謂前綴和，可以簡單歸納成一條公式，即ans[ i ] = ans[ i - 1 ] + a[ i ]; 如何理解，看例題： Description 已知兩個正整數a和b，求在a與b之間（包含a和b）的所有整數的十進制表示中1出現的次
2020-02-21 04:53:03