#include <stdio.h> 
int main()
{
	int i,t,w,h,j,k,n,l,f,y,z;
	scanf("%d",&t);
	int re[t+1];
	for(f=1;f<=t;f++)
	{
	     scanf("%d",&w);
	     scanf("%d",&h);
	     scanf("%d",&n);
	     int a[n+1],b[n+1],c[n+1],d[n+1];
	     for(j=1;j<=n;j++)
	     {
	         scanf("%d",&a[j]);
	         scanf("%d",&b[j]);
	     }
	      for(j=1;j<=n;j++)
	     {
	         scanf("%d",&c[j]);
	         scanf("%d",&d[j]);
	     }
		 int r[n+1],v[n+1];
		 for(k=1;k<=n;k++)
		 {
		 	r[k]=k;
		 	v[k]=k;
		 }
		 int p[n][n],q[n][n];
	   	 for(i=1;i<n;i++)
		 {
		 for(j=i+1;j<=n;j++)
		    {
		 	p[i][j]=(a[i]-a[j])*(a[i]-a[j])+(b[i]-b[j])*(b[i]-b[j]);
		    q[i][j]=(c[i]-c[j])*(c[i]-c[j])+(d[i]-d[j])*(d[i]-d[j]);
		    if((a[i]-a[j])*(a[i]-a[j])+(b[i]-b[j])*(b[i]-b[j])==1) 
					{
					if(r[j]==j) r[j]=r[i];
					else if(r[j]!=j&&r[i]==i) r[i]=r[j];
					else if(r[j]!=j&&r[i]!=i) {for(k=1;k<=n;k++) {if(r[k]==r[j]) r[k]=r[i]; }}
					} 
	   	  	    if((c[i]-c[j])*(c[i]-c[j])+(d[i]-d[j])*(d[i]-d[j])==1) 
					{
					if(v[j]==j) v[j]=v[i];
					else if(v[j]!=j&&v[i]==i) v[i]=v[j];
					else if(v[j]!=j&&v[i]!=i) {for(k=1;k<=n;k++) {if(v[k]==v[j]) v[k]=v[i]; }}
					}    
		    }
		 }
         int s[n+1],u[n+1];
	     for(k=1;k<=n;k++)
		   {s[k]=0;u[k]=0;
		    for(i=1;i<=n;i++)
		     {
		      for(j=i+1;j<=n;j++)
		        {
		         if(r[i]==k&&r[j]==k)	s[k]=s[k]+p[i][j]; 
		         if(v[i]==k&&v[j]==k)	u[k]=u[k]+q[i][j]; 
		        }
		     } 
		   }
	    for(j=1;j<n;j++)
		{
			for(i=1;i<=n-j;i++)
			{
				if(s[i]>s[i+1]) {y=s[i+1]; s[i+1]=s[i]; s[i]=y;} 
				if(u[i]>u[i+1]) {y=u[i+1]; u[i+1]=u[i]; u[i]=y;} 
			}
		}
		int count=0;
		for(i=1;i<=n;i++)
		{
		if (s[i]==u[i]) count++;
		}
		if(count==n) re[f]=1; else re[f]=0;	
	} 	
	for(i=1;i<=t;i++){  if(re[i]==1) printf("YES\n");	else printf("NO\n");	};
 }