@[silentzdw](/user/874676) 错了，时间复杂度必定TLE
by dingshengyang @ 2023-08-03 09:15:40
```cpp
for (int i = 1; i <= a; i++) {
bfs(ai[i]);
}
```
这里错了。应该把所有`ai[i]`全部塞到队列里面统一bfs。
by dingshengyang @ 2023-08-03 09:16:39
@[dingshengyang](/user/302394) 懂嘞，谢谢大佬
by silentzdw @ 2023-08-03 09:30:16
```#include<bits/stdc++.h>
using namespace std;
int n,m,a,b,xa[250001],ya[250001],xb[250001],yb[250001],maxx[250001];
int main()
{
scanf("%d%d%d%d",&n,&m,&a,&b);
for(int i=1;i<=a;i++)scanf("%d%d",&xa[i],&ya[i]);
for(int i=1;i<=b;i++)scanf("%d%d",&xb[i],&yb[i]);
memset(maxx,127,sizeof(maxx));
for(int i=1;i<=b;i++)
for(int j=1;j<=a;j++)
maxx[i]=min(maxx[i],abs(xa[j]-xb[i])+abs(ya[j]-yb[i])); //核心
for(int i=1;i<=b;i++)printf("%d\n",maxx[i]);
return 0;
}
by Alex_Weia @ 2023-08-03 16:47:51
下我一跳
by _Regenbogen_ @ 2023-08-14 18:08:48