#include<bits/stdc++.h>
using namespace std;
long long t,n,m,x,y,sum;
int main()
{
	cin>>t;
	for(int i=1;i<=t;i++)
	{
		cin>>n>>m>>x>>y;
		sum=8;
		if(x==1&&y==1||x==1&&y==m||x==n&&y==1|x==n&&y==m)
			sum-=5;
		else if(x==1||x==n||y==1||y==m)
			sum-=3;
		if(sum%2!=0)
			cout<<sum/2+1;
		else
			cout<<sum/2;
		cout<<"\n";
	}
	
	return 0;
}

求助!
第4点WA!