Codeforces Round 885 (Div. 2) A题

原题div.2A

#include<iostream>
#include<algorithm>
#include<cstdio>
#include<cstring>
using namespace std;
int t;
const int N=105;
int main()
{
	cin>>t;
	while(t--)
	{
		int n,m,k;
		cin>>n>>m>>k;
		int x,y;
		cin>>x>>y;
		int flag=0;
		while(k--)
		{
			int l,r;
			cin>>l>>r;
			if((((x-l)*(x-l))+((y-r)*(y-r)))%2==0)flag=1;
		}   
		if(flag==0)cout<<"Yes"<<endl;
		else cout<<"No"<<endl;
	}
	return 0;
}