mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
53 lines
862 B
C++
53 lines
862 B
C++
#include <cstdio>
|
|
#include <cstdlib>
|
|
#include <cstring>
|
|
|
|
using namespace std;
|
|
|
|
//Written by Kiritow On Dec. 2ND, 2015
|
|
char map[500][500];
|
|
bool vis[500][500];
|
|
|
|
int xmax,ymax;
|
|
|
|
void dfs(int y,int x)
|
|
{
|
|
if(y<0||x<0||y>=ymax||x>=xmax) return;
|
|
if(vis[y][x]||map[y][x]=='*') return;
|
|
vis[y][x]=true;
|
|
dfs(y-1,x);
|
|
dfs(y+1,x);
|
|
dfs(y,x-1);
|
|
dfs(y,x+1);
|
|
}
|
|
|
|
int main()
|
|
{
|
|
scanf("%d %d",&xmax,&ymax);
|
|
for(int i=0;i<ymax;i++)
|
|
{
|
|
scanf("%s",&map[i][0]);
|
|
}
|
|
for(int i=0;i<xmax;i++)
|
|
{
|
|
if(map[0][i]!='*')
|
|
{
|
|
dfs(0,i);
|
|
break;
|
|
}
|
|
}
|
|
int cnt=0;
|
|
for(int i=0;i<ymax;i++)
|
|
{
|
|
for(int j=0;j<xmax;j++)
|
|
{
|
|
if(!vis[i][j]&&map[i][j]=='0')
|
|
{
|
|
cnt++;
|
|
}
|
|
}
|
|
}
|
|
printf("%d\n",cnt);
|
|
return 0;
|
|
}
|