博客
关于我
Avoid The Lakes
阅读量:623 次
发布时间:2019-03-13

本文共 1815 字,大约阅读时间需要 6 分钟。

Avoid The Lakes

Time Limit : 2000/1000ms (Java/Other)   Memory Limit : 131072/65536K (Java/Other)
Total Submission(s) : 190   Accepted Submission(s) : 106
Problem Description

Farmer John's farm was flooded in the most recent storm, a fact only aggravated by the information that his cows are deathly afraid of water. His insurance agency will only repay him, however, an amount depending on the size of the largest "lake" on his farm.

The farm is represented as a rectangular grid with N (1 ≤ N ≤ 100) rows and M (1 ≤ M ≤ 100) columns. Each cell in the grid is either dry or submerged, and exactlyK (1 ≤ K ≤ N × M) of the cells are submerged. As one would expect, a lake has a central cell to which other cells connect by sharing a long edge (not a corner). Any cell that shares a long edge with the central cell or shares a long edge with any connected cell becomes a connected cell and is part of the lake.

 
Input

* Line 1: Three space-separated integers: NM, and K

* Lines 2..K+1: Line i+1 describes one submerged location with two space separated integers that are its row and column: R and C

 
Output

* Line 1: The number of cells that the largest lake contains. 

 
Sample Input
3 4 53 22 23 12 31 1
 
Sample Output
4
 题解:相当于水池数目那题,只不过这个是找最大的水的个数;
代码:
1 #include
2 #include
3 int N,M,max,step; 4 int map[110][110]; 5 void dfs(int x,int y){ 6     if(!map[x][y]||x<0||x>=N||y<0||y>=M)return; 7     map[x][y]=0;step++; 8     if(step>max)max=step; 9     dfs(x+1,y);dfs(x-1,y);dfs(x,y+1),dfs(x,y-1);10 //    step--;map[x][y]=1;11     return;12 }13 int main(){14     int K,x,y;15     while(~scanf("%d%d%d",&N,&M,&K)){16         memset(map,0,sizeof(map));17         while(K--){18             scanf("%d%d",&x,&y);19             map[x-1][y-1]=1;20         }21         max=step=0;22         for(x=0;x

 

转载地址:http://wehaz.baihongyu.com/

你可能感兴趣的文章
Mysql 学习总结(86)—— Mysql 的 JSON 数据类型正确使用姿势
查看>>
Mysql 学习总结(87)—— Mysql 执行计划(Explain)再总结
查看>>
Mysql 学习总结(88)—— Mysql 官方为什么不推荐用雪花 id 和 uuid 做 MySQL 主键
查看>>
Mysql 学习总结(89)—— Mysql 库表容量统计
查看>>
mysql 实现主从复制/主从同步
查看>>
mysql 审核_审核MySQL数据库上的登录
查看>>
mysql 导入 sql 文件时 ERROR 1046 (3D000) no database selected 错误的解决
查看>>
mysql 导入导出大文件
查看>>
mysql 将null转代为0
查看>>
mysql 常用
查看>>
MySQL 常用列类型
查看>>
mysql 常用命令
查看>>
Mysql 常见ALTER TABLE操作
查看>>
MySQL 常见的 9 种优化方法
查看>>
MySQL 常见的开放性问题
查看>>
Mysql 常见错误
查看>>
MYSQL 幻读(Phantom Problem)不可重复读
查看>>
mysql 往字段后面加字符串
查看>>
mysql 快速自增假数据, 新增假数据,mysql自增假数据
查看>>
Mysql 报错 Field 'id' doesn't have a default value
查看>>