($N,$K)=glob<>;
for(0..$N-1){
	<>=~/ .* /;
	$X[$_]=500+$`;
	$Y[$_]=500+$&;
	$D[$_]=$'
}
for(<>){
	/ .* (.*) (.*) /;
	$_[500+$`][500+$&]+=$';
	$_[501+$`+$1][500+$&]-=$';
	$_[500+$`][501+$&+$2]-=$';
	$_[501+$`+$1][501+$&+$2]+=$'
}
for$y(0..1000){for$x(1..1000){
	$_[$x][$y]+=$_[$x-1][$y]
}}
for$x(0..1000){for$y(1..1000){
	$_[$x][$y]+=$_[$x][$y-1]
}}
for(0..$N-1){
	$\+=$-=$D[$_]-$_[$X[$_]][$Y[$_]]
}
print