CF1465-C. Peaceful Rooks 预备小知识: Rook(国际象棋中的车). 国际象棋中的棋子.每人有2个,他只能直走,不能斜走,除王车易位外不能越子. -- 来自<百度百科> 题意: 题目给出一个\(n\times n\)的棋盘,棋盘中有\(m(m<n)\)个车.最一开始任意两个车都不能打到对方(即都不在同一行或同一列). 每一个回合你可以让一个车水平或垂直移动任意距离,但是要求车移动后不能让其他车可以打到它.现在问你至少多少回合之后,所有车能够都移动到主对角线上. 思…

题意:一个棋盘上有一些"车",现在要让这些"车"跑到左倾斜的对角线上,每次可以移动一个棋子,但是棋盘的任意时刻都不能出现一个"车"能吃另一个"车"的情况.问最少需要移动多少次才能满足条件.("车"的个数小于对角线的格子数). 题解:对于某个棋子的位置\((x,y)\),我们可以\(x->y\)来建边,如果棋子已经在对角线上了,那么我们不用移动它们,也就不需要建边,否则一个棋子要么移动\(1\)次要么移…

A.In-game Chat 题目:就是从后面数连着的'('的个数是不是严格比剩下的字符多 思路:水题,直接从后往前遍历即可 代码: #include<iostream> #include<algorithm> #include<cstdio> #include<cmath> #include<cstring> using namespace std; int main(){ char s[1500]; int t; scanf("%d…

UVA - 11134 Fabled Rooks We would like to place n rooks, 1 ≤ n ≤ 5000, on a n × n board subject to the following restrictions The i-th rook can only be placed within the rectan- gle given by its left-upper corner (xli,yli) and its right- lower corner…

http://www.lightoj.com/volume_showproblem.php?problem=1005        PDF (English) Statistics Forum Time Limit: 1 second(s) Memory Limit: 32 MB A rook is a piece used in the game of chess which is played on a board of square grids. A rook can only move…

问题来源:刘汝佳<算法竞赛入门经典--训练指南> P81: 问题描述:你的任务是在n*n(1<=n<=5000)的棋盘上放n辆车,使得任意两辆车不相互攻击,且第i辆车在一个给定的矩形R之内. 问题分析:1.题中最关键的一点是每辆车的x坐标和y坐标可以分开考虑(他们互不影响),不然会变得很复杂,则题目变成两次区间选点问题:使得每辆车在给定的范围内选一个点,任何两辆车不能选同一个点.  2.本题另外一个关键点是贪心法的选择,贪心方法:对所有点的区间,按右端点从小到大排序:每次在一个区间…

We would like to place n rooks, 1 n 5000, on a n nboard subject to the following restrictions• The i-th rook can only be placed within the rectan-gle given by its left-upper corner (xli; yli) and its right-lower corner (xri; yri), where 1 i n, 1 xli…

Problem F: Fabled Rooks We would like to place n rooks, 1 ≤ n ≤ 5000, on a n×n board subject to the following restrictions The i-th rook can only be placed within the rectangle given by its left-upper corner (xli, yli) and its right-lower corner (xri…

We would like to place  n  rooks, 1 ≤  n  ≤ 5000, on a  n×n  board subject to the following restrictions The i-th rook can only be placed within the rectangle given by its left-upper corner (xli, yli) and its right-lower corner (xri, yri), where 1 ≤ …

Problem F: Fabled Rooks We would like to place n rooks, 1 ≤ n ≤ 5000, on a n×n board subject to the following restrictions The i-th rook can only be placed within the rectangle given by its left-upper corner (xli, yli) and its right-lower corner (xri…