地址:http://acm.split.hdu.edu.cn/showproblem.php?pid=6058 题目: Kanade's sum Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 505    Accepted Submission(s): 176 Problem Description Give you an array …

题解: 官方题解太简略了orz 具体实现的方式其实有很多 问题就在于确定A[j]以后,如何找符合条件的A[i] 这里其实就是要提前预处理好 我是倒序插入点的,所以要沿着A[k]爬树,找符合的A[i] 如果发现A[i]与A[k]的第p位不同,比如A[k]位1,A[i]为0,那么所有的在i右边的第p位为0的数就都可以充当A[j] 所以实际上就需要求出有多少点对(i, j),满足这个条件. 不妨用可持久化的思想考虑这个过程 倒序插入A[i]时,我们就能统计出来A[i]的第p位为0(或者为1)时,所有在…

FFF at Valentine Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1060    Accepted Submission(s): 506 Problem Description At Valentine's eve, Shylock and Lucar were enjoying their time as any oth…

Dying Light Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 513    Accepted Submission(s): 122 Problem Description LsF is visiting a local amusement park with his friends, and a mirror room su…

CSGO Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 127    Accepted Submission(s): 20 Problem Description Senior Pan is crazy about CSGO and she is so skilled. She can kill every enemy she sp…

Ch’s gift Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1354    Accepted Submission(s): 496 Problem Description Mr. Cui is working off-campus and he misses his girl friend very much. After a w…

Big binary tree Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 597    Accepted Submission(s): 207 Problem Description You are given a complete binary tree with n nodes. The root node is numbere…

Colorful Tree Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 1539    Accepted Submission(s): 616 Sample Input 3 1 2 1 1 2 2 3 6 1 2 1 3 2 1 1 2 1 3 2 4 2 5 3 6 Sample Output Case #1: 6 Case #…

Function Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 652    Accepted Submission(s): 267 Sample Input 3 2 1 0 2 0 1 3 4 2 0 1 0 2 3 1 Sample Output Case #1: 4 Case #2: 4 Source 2017 Multi-U…

Balala Power! Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 2668    Accepted Submission(s): 562 Problem Description Sample Input 1 a 2 aa bb 3 a ba abc Sample Output Case #1: 25 Case #2: 132…