H - National Day Parade Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 3687 Appoint description:  System Crawler  (2014-11-08) Description There are n×n students preparing for the National Day…
Description Math Olympiad is called “Aoshu” in China. Aoshu is very popular in elementary schools. Nowadays, Aoshu is getting more and more difficult. Here is a classic Aoshu problem: ABBDE __ ABCCC = BDBDE In the equation above, a letter stands for…
F - Rotational Painting Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 3685 Appoint description:  System Crawler  (2014-11-09) Description Josh Lyman is a gifted painter. One of his great works…
C - To Be an Dream Architect Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 3682 Appoint description:  System Crawler  (2014-11-09) Description The “dream architect” is the key role in a team o…
C - To Be an Dream Architect Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 3682 Appoint description:  System Crawler  (2014-11-05) Description The “dream architect” is the key role in a team o…
Description     A new Semester is coming and students are troubling for selecting courses. Students select their course on the web course system. There are n courses, the ith course is available during the time interval (A i,B i). That means, if you…
N皇后问题 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 6905    Accepted Submission(s): 3128 Problem Description 在N*N的方格棋盘放置了N个皇后,使得它们不相互攻击(即任意2个皇后不允许处在同一排,同一列,也不允许处在与棋盘边框成45角的斜线上.你的任务是,对于给定的N,求出有…
一个人的旅行 Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 29929    Accepted Submission(s): 10280 Problem Description 虽然草儿是个路痴(就是在杭电待了一年多,居然还会在校园里迷路的人,汗~),但是草儿仍然很喜欢旅行,因为在旅途中 会遇见很多人(白马王子,^0^),很多事,还能…
F - Computer Virus on Planet Pandora Time Limit:2000MS     Memory Limit:128000KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 3695 Appoint description:  System Crawler  (2014-11-05) Description     Aliens on planet Pandora also write…
Description “Farm Game” is one of the most popular games in online community. In the community each player has a virtual farm. The farmer can decide to plant some kinds of crops like wheat or paddy, and buy the corresponding crop seeds. After they gr…