The map of Berland is a rectangle of the size n × m, which consists of cells of size 1 × 1. Each cell is either land or water. The map is surrounded by the ocean. Lakes are the maximal regions of water cells, connected by sides, which are not connect…

time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output The map of Berland is a rectangle of the size n × m, which consists of cells of size 1 × 1. Each cell is either land or water. The map is surrou…

Lakes in Berland 题意与解释:这道题就是求图中被围起来的点群,问最少去掉几个点,可以使得孤立的点群数目为K; 因为自己写的代码又长又had bugs. 我自己写的bfs,想着是先染色,后期在考虑这个颜色要不要留. 第一个bug点是next的点写不对,写了两个nx,应该是一个nx,ny.   第二个bug,是自己bfs到边界后就直接return了,这样就导致了,有部分点实际上是联通边界的,但是直接return,导致没标记的点出现在下一次的bfs中.  #include <iostr…

D. Lakes in Berland time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output The map of Berland is a rectangle of the size n × m, which consists of cells of size 1 × 1. Each cell is either land or…

Description The map of Berland is a rectangle of the size n × m, which consists of cells of size 1 × 1. Each cell is either land or water. The map is surrounded by the ocean. Lakes are the maximal regions of water cells, connected by sides, which are…

题目链接 题解 CF723D [Lakes in Berland] 首先将边界的水用bfs处理掉 再将中间的每一个湖泊处理出来,存入一个结构体内,结构体里记录湖泊大小和开始点 将湖泊排序从小往大填满,并利用开始点进行bfs改变地图 细节见代码: #include<bits/stdc++.h> using namespace std; int n,m,k; ][],mapp[][]; ]={,-,,,}; ]={,,,,-},cnt; struct SYM{ int cc,sx,sy; }lak…

The map of Berland is a rectangle of the size n × m, which consists of cells of size 1 × 1. Each cell is either land or water. The map is surrounded by the ocean. Lakes are the maximal regions of water cells, connected by sides, which are not connect…

D. Lakes in Berland time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output The map of Berland is a rectangle of the size n × m, which consists of cells of size 1 × 1. Each cell is either land or…

D. Lakes in Berland time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output The map of Berland is a rectangle of the size n × m, which consists of cells of size 1 × 1. Each cell is either land or…

题目链接:codeforces723 D. Lakes in Berland 参考博客:http://www.cnblogs.com/Geek-xiyang/p/5930245.html #include<cstdio> #include<cstring> #include<vector> #include<algorithm> #define CLR(a,b) memset((a),(b),sizeof((a))) using namespace std;…