Cube Stack 有一点lazy思想,设三个数组cnt代表它以下的有多少个元素(直到栈底),top[x]代表x所在栈的栈顶元素,dad[x]代表x所在栈的栈底元素,先寻找父亲,然后递归更新累加cnt,找父亲的时候更新cnt,对于一个元素,再用之前一定要找父亲,这样才会是真的cnt. #include<iostream> #include<cstdio> using namespace std; ],cnt[],dad[]; int p; void Cin(int &x)…

[POJ 3468]A Simple Problem with Integers给定Q个数A1, ..., AQ,多次进行以下操作:1.对区间[L, R]中的每个数都加n.2.求某个区间[L, R]中的和.Q ≤ 100000 Sol如果只记录区间的和?进行操作1的时候需要O(N)的时间去访问所有的节点.考虑多记录一个值inc,表示这个区间被整体的加了多少. 延迟更新信息更新时,未必要真的做彻底的更新,可以只是将应该如何更新记录下来,等到真正需要查询准确信息时,才去更新 足以应付查询的部分.在区…

Cube Stacking Time Limit:2000MS     Memory Limit:30000KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 1988 Description Farmer John and Betsy are playing a game with N (1 <= N <= 30,000)identical cubes labeled 1 through N. They st…

Cube Stacking Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 23678   Accepted: 8299 Case Time Limit: 1000MS Description Farmer John and Betsy are playing a game with N (1 <= N <= 30,000)identical cubes labeled 1 through N. They start w…

Cube Stacking Time Limit: 2000MS Memory Limit: 30000K Total Submissions: 21350 Accepted: 7470 Case Time Limit: 1000MS Description Farmer John and Betsy are playing a game with N (1 <= N <= 30,000)identical cubes labeled 1 through N. They start with…

Cube Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://acm.uestc.edu.cn/#/problem/show/80 Description As a student of the applied mathematics school of UESTC, WCM likes mathematics. Some day he found an interesting theorem that every positive inte…

1. 题目描述给定一个$2 \times 2 \times 2$的魔方,当某个面上的4个小块颜色均相同时,称这个面为complete.求对这个魔方进行$n \in [1,7]$次旋转(沿某个面顺时针或者逆时针)的过程中,求complete的面总和的最大值.魔方及索引如下图所示: 2. 基本思路及代码解法一(MLE):刚读过题,觉得挺简单的,时限10000ms还挺长的.需要搞清楚沿着某个面旋转后矩阵的元素是如何变化的.就想到可以进行状态压缩$6^24 < 2^63$,因此将cube表示的矩阵可以使…

1054:Cube 总时间限制:   1000ms 内存限制: 131072kB   描述 Delayyy君很喜欢玩某个由Picks编写的方块游戏,游戏在一个由单位格组成的棋盘上进行. 游戏的主角是一个6个面互不相同的小方块,每次可以向上下左右中的某个方向翻滚一格. 棋盘上有 N 个关键格子,对应于游戏中的村庄,在坐标系中,每个村庄有一个坐标位置 (x,y) (任意两个村庄位置不相等). 先前的方块村民已经修好了 N-1 条道路(高架桥.地下隧道等,即不能从一条道路走上另一条道路)使这 N 个村…

Cube Stacking Description Farmer John and Betsy are playing a game with N (1 <= N <= 30,000)identical cubes labeled 1 through N. They start with N stacks, each containing a single cube. Farmer John asks Betsy to perform P (1<= P <= 100,000) op…

Cube Stacking Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 21567   Accepted: 7554 Case Time Limit: 1000MS Description Farmer John and Betsy are playing a game with N (1 <= N <= 30,000)identical cubes labeled 1 through N. They start w…