题目链接:https://codeforces.com/contest/1089/problem/K time limit per test: 2 seconds memory limit per test: 512 megabytes King Kog got annoyed of the usual laxity of his knights — they can break into his hall without prior notice! Thus, the King decided…

A. Alice the Fan Solved. 题意: 两个人打网球,要求teamA 的得分与其他队伍拉开尽量大 输出合法的方案 思路: $dp[i][j][k][l] 表示 A 赢i局,其他队伍赢j局,两个人比分为k : l 的时候的方案$ #include<bits/stdc++.h> using namespace std; ][][][]; vector<pair<][][][]; void Init() { dp[][][][] = ; ; sum <= ; ++…

1087: [SCOI2005]互不侵犯King Time Limit: 10 Sec  Memory Limit: 162 MBSubmit: 3336  Solved: 1936[Submit][Status][Discuss] Description 在N×N的棋盘里面放K个国王,使他们互不攻击,共有多少种摆放方案.国王能攻击到它上下左右,以及左上左下右上右下八个方向上附近的各一个格子,共8个格子. Input 只有一行,包含两个数N,K ( 1 <=N <=9, 0 <= K &…

题目大意 在N×N的棋盘里面放K个国王,使他们互不攻击,共有多少种摆放方案.国王能攻击到它上下左右,以及左上 左下右上右下八个方向上附近的各一个格子,共8个格子. 思路 首先,搜索可以放弃,因为这是一个计数问题,正解几乎不可能是搜索. 我们考虑这样一个决策过程:对于每一行,我们决定放哪些格子.这个决策过程很明显满足无后效性和最优子结构,同时,根据上一行可以递推出这一行的所有可行方案. 所以,我们考虑使用动态规划. 怎么划分阶段呢?根据我们以上的推理,很显然可以根据行来划分阶段. 怎么转移呢?在转…

King's Quest Time Limit: 15000MS Memory Limit: 65536K Case Time Limit: 2000MS Description Once upon a time there lived a king and he had N sons. And there were N beautiful girls in the kingdom and the king knew about each of his sons which of those g…

一.题目 Description 在N×N的棋盘里面放K个国王,使他们互不攻击,共有多少种摆放方案.国王能攻击到它上.下.左.右,以及左上.左下.右上.右下八个方向上附近的各一个格子,共8个格子. Input 只有一行,包含两个数N,K ( 1 <=N <=9, 0 <= K <= N * N) Output 方案数 Sample Input 3 2 Sample Output 16 原题链接→_→bzoj1087: [SCOI2005]互不侵犯King 二.题目分析 其实我们可以…

并查集+左偏树.....合并的时候用左偏树,合并结束后吧父结点全部定成树的根节点,保证任意两个猴子都可以通过Find找到最厉害的猴子                       Monkey King Time Limit: 10000MS   Memory Limit: 32768KB   64bit IO Format: %lld & %llu [Submit]   [Go Back]   [Status] Description Once in a forest, there lived…

K. King's Rout time limit per test 4 seconds memory limit per test 512 megabytes input standard input output standard output The great rout will be held this evening in the palace of his majesty Nassah II, the king of Occorom. There are n guests invi…

1087: [SCOI2005]互不侵犯King Time Limit: 10 Sec Memory Limit: 162 MB Submit: 2337 Solved: 1366 [Submit][Status][Discuss] Description 在N×N的棋盘里面放K个国王,使他们互不攻击,共有多少种摆放方案.国王能攻击到它上下左右,以及左上左下右上右下八个方向上附近的各一个格子,共8个格子. Input 只有一行,包含两个数N,K ( 1 <=N <=9, 0 <= K &…

Description Once, in one kingdom, there was a queen and that queen was expecting a baby. The queen prayed: ``If my child was a son and if only he was a sound king.'' After nine months her child was born, and indeed, she gave birth to a nice son. Unfo…