原创 Codeforces 628D Magic Numbers 數位DP
Consider the decimal presentation of an integer. Let’s call a number d-magic if digit d appears in decimal presenta
2020-06-16 14:09:47
41
原创 Distinct Substrings SPOJ - DISUBSTR
Given a string, we need to find the total number of its distinct substrings. Input T- number of test cases. T<=2
2020-06-16 14:09:47
原创 HDU 4417 Super Mario(線段樹離線處理/主席樹)
Mario is world-famous plumber. His “burly” figure and amazing jumping ability reminded in our memory. Now the poor
2020-06-16 14:09:47
原创 ccf 201709-4 通信網絡 BFS遍歷
問題描述 某國的軍隊由N個部門組成，爲了提高安全性，部門之間建立了M條通路，每條通路只能單向傳遞信息，即一條從部門a到部門b的通路只能由a向b傳遞信息。信息可以通過中轉的方式進行傳遞，即如果a能將信息傳遞到b，b又能將信息傳遞
2020-02-22 20:49:51
原创 Glass Carving CodeForces - 527C
Leonid wants to become a glass carver (the person who creates beautiful artworks by cutting the glass). He already
2020-02-22 20:49:51
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原创 Palindrome URAL - 1297
The “U.S. Robots” HQ has just received a rather alarming anonymous letter. It states that the agent from the compe
2020-02-22 20:49:51
原创 CCF201709-3 JSON查詢
問題描述 JSON (JavaScript Object Notation) 是一種輕量級的數據交換格式，可以用來描述半結構化的數據。JSON 格式中的基本單元是值 (value)，出於簡化的目的本題只涉及 2 種類型的值：
2020-02-22 20:49:51
原创 國慶出遊 HihoCoder - 1041
小Hi和小Ho準備國慶期間去A國旅遊。A國的城際交通比較有特色：它共有n座城市(編號1-n)；城市之間恰好有n-1條公路相連，形成一個樹形公路網。小Hi計劃從A國首都(1號城市)出發，自駕遍歷所有城市，並且經過每一條公路恰好兩次
2020-02-22 20:49:51
原创 Square HDU - 1518
Given a set of sticks of various lengths, is it possible to join them end-to-end to form a square? Input The fi
2020-02-22 20:49:51
原创 APIO2012 Dispatching 左偏樹
在一個忍者的幫派裏，一些忍者們被選中派遣給顧客，然後依據自己的工作獲取報償。在這個幫派裏，有一名忍者被稱之爲 Master。除了 Master以外，每名忍者都有且僅有一個上級。爲保密，同時增強忍者們的領導力，所有與他們工作相關的指
2020-02-22 20:49:51
原创 PAT甲級1135 Is It A Red-Black Tree
There is a kind of balanced binary search tree named red-black tree in the data structure. It has the following 5 p
2020-02-22 20:49:51
原创 Strange fuction HDU - 2899
Now, here is a fuction: F(x) = 6 * x^7+8*x^6+7*x^3+5*x^2-y*x (0 <= x <=100) Can you find the minimum val
2020-02-22 20:49:51
原创 PAT甲級1131. Subway Map 最短路/bfs
In the big cities, the subway systems always look so complex to the visitors. To give you some sense, the following
2020-02-22 20:49:51
1
原创 Freedom of Choice URAL - 1517
Background Before Albanian people could bear with the freedom of speech (this story is fully described in the prob
2020-02-22 20:49:51
原创 SGU 507 Treediff 啓發式合併
Andrew has just made a breakthrough in complexity theory: he thinks that he can prove P=NP if he can get a data str
2020-02-22 20:49:51
1