make, 101 bytes

Result

AC

Duration

3489ms

Code [DL]

SHELL=bash
a:
	@read h w<<<'$(STDIN:\n= )';f(){ printf \\$$[++i%w/2*c?40:i>w?c=h--%h,i=0,12:52];f;};f

stdin

88
33

stdout

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*********************************

stderr

environment: ++i%w/2*c?40:i>w?c=h--%h,i=0,12:52: division by 0 (error token is "h,i=0,12:52")
make: *** [/volume/CODE:3: a] Error 1