using System.ComponentModel;
using System.Data;
using System.Threading;
namespace TroytownKeeper
{
public class TroytownKeeper
{
string [] maze;
bool [,]used=new bool[100,100];
int sum=0;
public TroytownKeeper()
{
}
public int LimeLiters(string [] maze)
{
this.maze=maze;
for(int x=0;x<maze.GetLength(0);x++)
{
if(maze[x][0]=='.') dfs(x,0);
if(maze[x][maze[0].Length-1]=='.') dfs(x,maze[0].Length-1);
}
for(int y=0;y<maze[0].Length-1;y++)
{
if(maze[0][y]=='.') dfs(0,y);
if(maze[maze.GetLength(0)-1][y]=='.') dfs(maze.GetLength(0)-1,y);
}
for(int x=0;x<maze.GetLength(0);x++)
for(int y=0;y<maze[0].Length;y++)
if(maze[x][y]=='#')
{
//upside
if(x==0)
sum++;
if(x<maze.Length-1&&used[x+1,y])
sum++;
//leftside
if(y==0)
sum++;
if(y>0&&used[x,y-1])
sum++;
//underside
if(x==maze.Length-1)
sum++;
if(x>0&&used[x-1,y])
sum++;
//rightside
if(y==maze[0].Length-1)
sum++;
if(y<maze[0].Length-1&&used[x,y+1])
sum++;
}
return sum;
}
static void Main(string[] args)
{
TroytownKeeper TK=new TroytownKeeper();
string [] str={"##..#"
,"#.#.#"
,"#.#.#"
,"#####"};
int count=TK.LimeLiters(str);
Console.WriteLine(count.ToString());
}
void dfs(int x,int y)
{
used[x,y]=true;
if(x<maze.GetLength(0)&&maze[x+1][y]=='.'&&!used[x+1,y]) dfs(x+1,y);
if(y<maze[0].Length&&maze[x][y+1]=='.'&&!used[x,y+1]) dfs(x,y+1);
if(x>0&&maze[x-1][y]=='.'&&!used[x-1,y]) dfs(x-1,y);
if(y>0&&maze[x][y-1]=='.'&&!used[x,y-1]) dfs(x,y-1);
}
}
}
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