node, 130 bytes

Result

WA

Duration

1110ms

Code [DL]

r='repeat';process.stdin.on('data',s=>[h,w]=(''+s).split('\n'),a='*'[r](w)+'\n',console.log(a+(`*${' '[r](w-2)}*\n`)[r](h-2)+a));

stdin

80
23

stdout

stderr

/volume/CODE:1
(function (exports, require, module, __filename, __dirname) { r='repeat';process.stdin.on('data',s=>[h,w]=(''+s).split('\n'),a='*'[r](w)+'\n',console.log(a+(`*${' '[r](w-2)}*\n`)[r](h-2)+a));
                                                                                                                                      ^

ReferenceError: w is not defined
    at Object.<anonymous> (/volume/CODE:1:135)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
    at startup (internal/bootstrap/node.js:282:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:743:3)