php, 102 bytes

Result

AC

Duration

1044ms

Code [DL]

<?php $h=+fgets(STDIN);$w=fgets(STDIN)-2;for($y=$h;$y;)echo"*".str_repeat("* "[$y--<$h&&$y],$w)."*
"?>

stdin

35
93

stdout

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

stderr

PHP Notice:  A non well formed numeric value encountered in /volume/CODE on line 1
PHP Notice:  A non well formed numeric value encountered in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1
PHP Notice:  String offset cast occurred in /volume/CODE on line 1