NY–63 — 小猴子下落

      小猴子下落                           時間限制:3000 ms  |  記憶體限制:65535 KB             難度:3            描述 有一顆二叉樹,最大深度為D,且所有葉子的深度都相同。所有結點從左至右從上到下的編號為1,2,3,·····,2的D次方減1。在結點1處放一個小猴子,它會往下跑。每個內結點上都有一個開關,初始全部關閉,當每次有小猴子跑到一個開關上時,它的狀態都會改變,當到達一個內結點時,如果開關關閉,小猴子往左走,

NY–17 — 單調遞增最長子序列 [經典DP]

 單調遞增最長子序列 時間限制:3000 ms  |  記憶體限制:65535 KB難度:4描述 求一個字串的最長遞增子序列的長度如:dabdbf最長遞增子序列就是abdf,長度為4  輸入 第一行一個整數0<n<20,表示有n個字串要處理隨後的n行,每行有一個字串,該字串的長度不會超過10000 輸出 輸出字串的最長遞增子序列的長度 範例輸入  3aaaababcabklmncdefg 範例輸出

NY–108 — 士兵殺敵(一)

 士兵殺敵(一) 時間限制:1000 ms  |  記憶體限制:65535 KB難度:3描述

NY–234 — 吃馬鈴薯 [二維動態規劃]

 吃馬鈴薯 時間限制:1000 ms  |  記憶體限制:65535 KB難度:4 描述  Bean-eating is an interesting game, everyone owns an M*N matrix, which is filled with different qualities beans. Meantime, there is only one bean in any 1*1 grid. Now you want to eat the beans and

HDU–1234 — 開門人和關門人

開門人和關門人Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8825    Accepted Submission(s): 4577Problem Description每天第一個到機房的人要把門開啟,最後一個離開的人要把門關好。現有一堆雜亂的機房簽 到、簽離記錄,請根據記錄找出當天開門和關門的人。

HDU–1160 — FatMouse’s Speed [動態規劃+排序]

 FatMouse's Speed Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7278    Accepted Submission(s): 3217Special JudgeProblem DescriptionFatMouse believes that the fatter a mouse is, the faster it

HDU–1455 — Sticks [DFS] [剪枝最佳化]

SticksTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4755 Accepted Submission(s): 1318Problem DescriptionGeorge took sticks of the same length and cut them randomly until all parts became at most

HDU–1251 — 統計難題 [字典樹基本應用] [用數組事先分配空間以節約時間]

 統計難題 Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 131070/65535 K (Java/Others)Total Submission(s): 13656    Accepted Submission(s): 5858Problem DescriptionIgnatius最近遇到一個難題,老師交給他很多單詞(只有小寫字母組成,不會有重複的單詞出現),現在老師要他統計出以某個字串為首碼的單詞數量(單詞本身也是自己的首碼)

HDU–1159 — Common Subsequence [DP]

Common SubsequenceTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 17779 Accepted Submission(s): 7485Problem DescriptionA subsequence of a given sequence is the given sequence with some elements

HDU–1236 — 排名 [使用庫函數簡單排序]

 排名 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 12784    Accepted Submission(s): 4765Problem Description今天的上機考試雖然有即時的Ranklist,但上面的排名只是根據完成的題數排序,沒有考慮 每題的分值,所以並不是最後的排名。給定錄取分數線,請你寫程式找出最後通過分數線的

HDU-1088 — 滑雪 [記憶化搜尋] [深搜]

 滑雪  Time Limit: 1000MSMemory Limit: 65536KTotal Submissions: 68005Accepted: 25017 DescriptionMichael喜歡滑雪百這並不奇怪, 因為滑雪的確很刺激。可是為了獲得速度,滑的地區必須向下傾斜,而且當你滑到坡底,你不得不再次走上坡或者等待升降機來載你。Michael想知道載一個地區中最長底滑坡。地區由一個二維數組給出。數組的每個數字代表點的高度。下面是一個例子 1 2 3 4 516 17 18 1

POJ–3250 — Bad Hair Day [棧類比]

 Bad Hair Day  Time Limit: 2000MSMemory Limit: 65536KTotal Submissions: 11633Accepted: 3927  DescriptionSome of Farmer John's N cows (1 ≤ N ≤ 80,000) are having a bad hair day! Since each cow is self-conscious about her messy hairstyle, FJ wants to

HDU–1579 — Function Run Fun [記憶化搜尋] [深搜]

   Function Run Fun  Time Limit: 1000MSMemory Limit: 10000KTotal Submissions: 14823Accepted: 7665 DescriptionWe all love recursion! Don't we? Consider a three-parameter recursive function w(a, b, c): if a <= 0 or b <= 0 or c <= 0, then w(a,

HDU–1241 — Oil Deposits [水水的DFS]

 Oil Deposits Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8176    Accepted Submission(s): 4791Problem DescriptionThe GeoSurvComp geologic survey company is responsible for detecting

struts2 之 處理流程

1)       當servlet容器接收到一個請求後,將請求交給你在web.xml裡配置的過濾器FilterDispatcher,調用它的doFilter()方法。2)       FilterDispatcher詢問ActionMapper,以便確定這個請求有對應的action調用。3)       ActionMapper返回一個描述action調用的ActionMapping對象。4)       FilterDispatcher調用Dispatcher類的serviceAction()

NY–254 — 編號統計

編號統計時間限制:2000 ms  |  記憶體限制:65535 KB難度:2描述 zyc最近比較無聊,於是他想去做一次無聊的統計一下。他把全校同學的地址都統計了一下(zyc都將地址轉化成了編碼),然後他希望知道那個地方的同學最多(如果同學最多的地方有多個,輸出編號最小的一個)。 輸入第一行輸入一個正整數T(0<T<=11)表示有T組測試資料每組測試資料第一行輸入一個正整數N(0<N<200000)表示有N個編號,隨後輸入N個編碼(編碼由數字組成且少於十位)  輸出

HDU–2569 — 彼岸

彼岸Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2363 Accepted Submission(s): 1297Problem

NY–116 — 士兵殺敵(二) [樹狀數組是也]

 士兵殺敵(二) 時間限制:1000 ms  |           記憶體限制:65535 KB難度:5描述

HDU–1010 — Tempter of the Bone [DFS+經典奇偶剪枝]

 Tempter of the Bone Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 54236    Accepted Submission(s): 14606Problem DescriptionThe doggie found a bone in an ancient maze, which fascinated him a

HDU–2553 — N皇后問題

 N皇后問題Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5526    Accepted Submission(s): 2507Problem

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