题目: Description standard input/outputStatements Little Liesbeth likes to play with strings. Initially she got a string of length n, consisting of letters 'a' only. Then Liesbeth performs next operations with the string: If the first letter of the str…

EBCDIC Time Limit: 2000/2000 MS (Java/Others)    Memory Limit: 102400/102400 K (Java/Others)Total Submission(s): 160    Accepted Submission(s): 81 Problem Description A mad scientist found an ancient message from an obsolete IBN System/360 mainframe.…

343. Integer Break Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum product you can get. For example, given n = 2, return 1 (2 = 1 + 1); given n = 10, r…

新题目大意: 三个棋子按照先后顺序,可以随意方向合法地走到空位置上(而不是像原题light oj-1055中的一样三个棋子每次走的方向都一致),当三个棋子全部走进目标地点,就结束:求需要指挥的最少次数. 思路: BFS 在每次进行指挥时,需要分别指挥三个棋子,每个棋子至多有五种走法(第五种为原地不动——因为前进时受阻没法动的时候),同时枚举三个棋子的当前位置进入队列中.由于每个棋子在走的时候会影响到后续的点的移动,故需要三重for循环来枚举每次三个点的移动先后顺序,然后依旧三重循环来枚举搞定三个…

Another Rock-Paper-Scissors Problem 题目连接: http://codeforces.com/gym/100015/attachments Description Sonny uses a very peculiar pattern when it comes to playing rock-paper-scissors. He likes to vary his moves so that his opponent can't beat him with hi…

A. Hanoi tower Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100114 Description you the conditions of this task. There are 3 pivots: A, B, C. Initially, n disks of different diameter are placed on the pivot A: the smallest dis…

题目链接:http://codeforces.com/gym/101981/attachments The use of the triangle in the New Age practices seems to be very important as it represents the unholytrinity (Satan, the Antichrist and the False Prophet bringing mankind to the New World Order with…

D - Toll RoadTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=87493#problem/D Description Exactly N years ago, a new highway between two major cities was built. The highway runs from west to east. It…

BOPCTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=86686#problem/D Description You invented a new chess figure and called it BOPC. Suppose it stands at the square grid at the point with coordinates …

设串C的第一个字母在串A中出现的位置是stA, 串C的最后一个字母在串A中出现的位置是edA. 设串C的第一个字母在串B中出现的位置是stB, 串C的最后一个字母在串B中出现的位置是edB. 求出每一对合法的(stA, edA),(stB, edB) 对每一组( stA[i], edA[i] ) 和 ( stB[j], ed[j] ), 求串A[0,stA[i]-1]和串B[0, stB[j]-1]的最长公共子序列长度L1, 求串A[edA[i]+1, lenA-1]和串B[stB[j]+1,…