0pts求助

#include<bits/stdc++.h>
#define int long long
#define endl '\n'
using namespace std;
const int N=525,A=1e5+5;
int n,m,a,b,mini=1e9;
struct jz{
	int x,y;
}q[A];
struct grz{
	int x,y;
}p[A];
signed main(){
	cin>>n>>m>>a>>b;
	for(int i=1;i<=a;i++){
		cin>>p[i].x>>p[i].y;
	} 
	for(int i=1;i<=b;i++){
		cin>>q[i].x>>q[i].y;
	} 
	for(int i=1;i<=b;i++){
		for(int j=1;j<=a;j++){
			mini=1e9;
			mini=min(mini,abs(q[i].x-p[j].x)+abs(q[i].y-p[j].y));		
		}
		cout<<mini<<endl;
	}
	return 0;
}