https://www.cnblogs.com/fengzhiyuan/p/7588443.html 不会map,有点菜 1.要想知道三个字母出现次数相等, 为J [ i ]-J [ j ]== O[ i ]-O[ j ] == I [ i ]- I [ j ],移项得 J[ i ]-O[ i ]=J[ j ]-O[ j ] 其他同理 2.于是我们可以把每个 J[ i ]-O[ i ],O[ i ]-I[ i ]的二元组映射成出现这个组的位置,长度即为i-出现位置 至于为什么会想到哈希/map…
我要举报本次校赛出题人的消极出题!!! 官方题解请戳:http://3.scnuacm2015.sinaapp.com/?p=89(其实就是一堆代码没有题解) A. 树链剖分数据结构板题 题目大意:我没看,看不懂. 基本思路:我不会. 参考代码:找Oyk老师和Czj老师去. B. The background of water problem 题目大意(大写加粗的水题):给定$N$个学生和他们$K$个科目的成绩$S_i$,再给出各科目$K_i$的权重顺序$Q_i$,求排名之后,拥有id为$X$的…
Problems # Name A Infinite Sequence standard input/output 1 s, 256 MB x3509 B Restoring Painting standard input/output 1 s, 256 MB x2519 C Money Transfers standard input/output 1 s, 256 MB x724 D Tree Construction standard input/outp…
A.Relic Discovery_hdu5982 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 57 Accepted Submission(s): 49 Problem Description Recently, paleoanthropologists have found historical remains on an…