头文件删掉了，反正在哪
by GeorgeFan @ 2024-04-04 11:17:33
```cpp
#include <bits/stdc++.h>
using namespace std;
bool a[101][101];
int i,j,n,m,ans=0;
char c;
void f(int x,int y)
{
if(x>n||x<=0||y>m||y<=0||!a[x][y])
return;
a[x][y]=false;
f(x+1,y);
f(x,y+1);
f(x-1,y);
f(x,y-1);
}
int main()
{
cin>>n>>m;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
{
cin>>c;
if(c=='\n') cin>>c;
if(c=='0')
a[i][j]=false;
else
a[i][j]=true;
}
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
if(a[i][j])
{
ans++;
f(i,j);
}
cout<<ans;
return 0;
}
```
改了一下，过了
by littlep001 @ 2024-04-04 11:25:37
注意下可能 $c$ 输入进来的是一个'\n'
by littlep001 @ 2024-04-04 11:26:27
@[GeorgeFan](/user/1029575) 给个关注呗
by littlep001 @ 2024-04-04 11:28:34
@[littlep001](/user/922855) 6
by danlao @ 2024-04-04 11:48:13
@[yaodiguoan](/user/1023793) **~~骗关注乃人之常情~~**
by littlep001 @ 2024-04-04 11:58:56
@[littlep001](/user/922855) OK
by GeorgeFan @ 2024-04-04 20:59:15