原创 hdu 5147 Sequence II(前綴和，後綴和)
Problem Description Long long ago, there is a sequence A with length n. All numbers in this sequence is no smaller th
2020-07-01 03:11:03
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原创 POJ 3349 Snowflake Snow Snowflakes (鏈式解決衝突)
Description You may have heard that no two snowflakes are alike. Your task is to write a program to determine whether
2020-07-01 03:10:53
原创 HDU 4305 Lightning (判斷點在線段上，生成樹計數)
Problem Description There are N robots standing on the ground (Don't know why. Don't know how). Suddenly the sky tu
2020-07-01 03:10:53
原创 HDU 2187 悼念512汶川大地震遇難同胞——老人是真餓了（貪心）
Problem Description 時間：2008年5月16日（震後第4天） 地點：汶川縣牛腦寨 人物：羌族老奶奶 【轉載整理】牛腦寨是一個全村600多人的羌族寨子，震後幾天，這裏依然能常常聽到隆隆的聲音，那是對面山上石頭不斷滑落
2020-07-01 03:10:53
原创 Code[vs] 1083 Cantor表
題目描述 Description 現代數學的著名證明之一是Georg Cantor證明了有理數是可枚舉的。他是用下面這一張表來證明這一命題的： 1/1 1/2 1/3 1/4 1/5 … 2/1 2/2 2/3 2/4 … 3/1
2020-07-01 03:10:53
原创 HDU 4991 Ordered Subsequence
Problem Description A numeric sequence of ai is ordered if a1<a2<……<aN. Let the subsequence of the given numeric sequ
2020-07-01 03:10:53
原创 POJ 2418 Hardwood Species (trie樹\map)
Description Hardwoods are the botanical group of trees that have broad leaves, produce a fruit or nut, and generally g
2020-02-21 20:09:43
原创 POJ 1753 Flip Game (BFS)
Description Flip game is played on a rectangular 4x4 field with two-sided pieces placed on each of its 16 squares. One
2020-02-21 20:09:43
原创 POJ 3687 Labeling Balls (逆向建邊)
Description Windy has N balls of distinct weights from 1 unit to N units. Now he tries to label them with 1 to N in su
2020-02-21 20:09:43
原创 POJ 1321 棋盤問題(DFS)
Description 在一個給定形狀的棋盤（形狀可能是不規則的）上面擺放棋子，棋子沒有區別。要求擺放時任意的兩個棋子不能放在棋盤中的同一行或者同一列，請編程求解對於給定形狀和大小的棋盤，擺放k個棋子的所有可行的擺放方案C。 Input
2020-02-21 20:09:43
原创 HDU 1026 Ignatius and the Princess I (BFS)
Problem Description The Princess has been abducted by the BEelzebub feng5166, our hero Ignatius has to rescue our pre
2020-02-21 20:09:43
原创 HDU 2473 Junk-Mail Filter(刪點)
Problem Description Recognizing junk mails is a tough task. The method used here consists of two steps: 1) Extract th
2020-02-21 20:09:43
原创 HDU 5137 How Many Maos Does the Guanxi Worth (最短路徑最大值)
Problem Description "Guanxi" is a very important word in Chinese. It kind of means "relationship" or "contact". Guanx
2020-02-21 20:09:43
原创 HDU 4403 A very hard Aoshu problem (DFS)
Problem Description Aoshu is very popular among primary school students. It is mathematics, but much harder than ordi
2020-02-21 20:09:43
原创 ZOJ 3816 Generalized Palindromic Number (DFS，暴力枚舉)
A number that will be the same when it is written forwards or backwards is known as a palindromic number. For example,
2020-02-21 20:09:43