台部落Sureina

Problem DescriptionEvery school has some legends, Northeastern University is the same. Enter from the north gate of Nor

2020-07-03 11:20:57

Problem Description For a number,if the length of continuous odd digits is even and the length of continuous even digit

2020-07-03 10:36:41

Description Modern text editors usually show some information regarding the document being edited. For example, the

2020-07-03 10:36:41

描述 John is going on a fishing trip. He has h hours available (1 <= h <= 16), and there are n lakes in the area (2 <= n

2020-07-03 10:36:41

Description The map of Berland is a rectangle of the size n × m, which consists of cells of size 1 × 1. Each cell i

2020-02-22 16:46:36

描述在漆黑的夜裏，N位旅行者來到了一座狹窄而且沒有護欄的橋邊。如果不借助手電筒的話，大家是無論如何也不敢過橋去的。不幸的是，N個人一共只帶了一隻手電筒，而橋窄得只夠讓兩個人同時過。如果各自單獨過橋的話，N人所需要的時間已知；而如果兩人同

2020-02-22 16:46:36

Problem Description Give you a sequence of N(N≤100,000) integers : a1,...,an(0<ai≤1000,000,000). There are Q(Q≤100,000)

2020-02-22 16:46:36

描述 Michael喜歡滑雪百這並不奇怪，因爲滑雪的確很刺激。可是爲了獲得速度，滑的區域必須向下傾斜，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想知道載一個區域中最長底滑坡。區域由一個二維數組給出。數組的

2020-02-22 16:46:36

描述小淵和小軒是好朋友也是同班同學，他們在一起總有談不完的話題。一次素質拓展活動中，班上同學安排做成一個m行n列的矩陣，而小淵和小軒被安排在矩陣對角線的兩端，因此，他們就無法直接交談了。幸運的是，他們可以通過傳紙條來進行交流。紙條要經由

2020-02-22 16:46:36

Problem DescriptionEvery time it rains on Farmer John's fields, a pond forms over Bessie's favorite clover patch. This

2020-02-22 16:46:36

將每條有向邊想象成傳輸物質的管道。每個管道都有一個固定的容量，可以看作是物質能流經該管道的最大速度（譬如可以想象爲水流和河槽）。頂點是管道間的連接

2020-02-22 16:46:36

描述 “ACKing”同學以前做一個圖像處理的項目時，遇到了一個問題，他需要摘取出圖片中某個黑色線圏成的區域以內的圖片，現在請你來幫助他完成第一步，把黑色線圏外的區域全部變爲黑色。圖1

2020-02-22 16:46:36

Problem Description The harmonic value of the permutation p1,p2,⋯pn is ∑i=1n−1gcd(pi.pi+1) Mr. Frog is wondering about

2020-02-22 16:46:36

Problem Description An abandoned country has n(n≤100000) villages which are numbered from 1 to n. Since abandoned for a

2020-02-22 16:46:36

Description Polycarp is a music editor at the radio station. He received a playlist for tomorrow, that can be

2020-02-22 16:46:36