http://www.math.pitt.edu/~xfc/math2370/chap5.pdf…

Equivalent Strings 题目链接:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=84562#problem/E 题意: 给出两个字符串,确定是否相等.一个字符串分割成相同大小的两半a1和a2,另一个字符串分割成相同大小的成两半b1和b2. 以下是正确的:a1相当于b1 ,a2相当于b2a1相当于b2 ,a2相当于b1 Sample Input Input aabaabaa Output YES Input aabbaba…

Equivalent Strings Problem's Link: http://codeforces.com/contest/559/problem/B Mean: 给定两个等长串s1,s2,判断是否等价. 等价的含义为: 若长度为奇数,则必须是相同串. 若长度是偶数,则将两串都均分成长度为原串一半的两个子串l1,r1和l2,r2,其中l1和l2等价且r1和r2等价,或者l1和r2等价且l2和r1等价. analyse: 直接按照题意模拟写个递归分治就行.比赛的时候总觉得这样暴力写会TLE,…

D. Equivalent Strings Time Limit: 2 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/559/problem/B Description Today on a lecture about strings Gerald learned a new definition of string equivalency. Two strings a and b of equal length are…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=3836 Equivalent Sets Description To prove two sets A and B are equivalent, we can first prove A is a subset of B, and then prove B is a subset of A, so finally we got that these two sets are equivalent.Y…

B. Equivalent Strings Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/559/problem/B Description Today on a lecture about strings Gerald learned a new definition of string equivalency. Two strings a and b of equal length are…

Equivalent Sets Time Limit: 12000/4000 MS (Java/Others)    Memory Limit: 104857/104857 K (Java/Others)Total Submission(s): 3568    Accepted Submission(s): 1235 Problem Description To prove two sets A and B are equivalent, we can first prove A is a su…

Submit Status Description Today on a lecture about strings Gerald learned a new definition of string equivalency. Two strings a and b of equal length are called equivalent in one of the two cases: They are equal. If we split string a into two halves…

Equivalent Strings   E - 暴力求解.DFS Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Description Today on a lecture about strings Gerald learned a new definition of string equivalency. Two strings a and b of equal length ar…

Problem Description To prove two sets A and B are equivalent, we can first prove A is a subset of B, and then prove B is a subset of A, so finally we got that these two sets are equivalent. You are to prove N sets are equivalent, using the method abo…