golfish, 143 bytes

Result

WA

Duration

770ms

Code [DL]

00000000  d0 e2 00 05 12 d4 d8 10  d1 81 e1 80 00 e0 01 d4  |................|
00000010  d3 d7 12 12 20 ed e2 e3  80 e2 05 12 d2 d5 06 d1  |.... ...........|
00000020  00 e1 80 e0 01 d2 d5 12  20 ed e2 80 e2 00 00 00  |........ .......|
00000030  00 00 00 e1 80 e0 c0 e0  c0 d0 20 00 ed e2 d1 d3  |.......... .....|
00000040  d5 d5 12 e2 80 00 00 e3  05 12 d8 d4 11 00 e2 ed  |................|
00000050  20 01 12 e1 80 00 e2 00  20 12 d2 d5 01 e1 80 00  | ....... .......|
00000060  e0 ed e2 00 00 00 00 e3  10 80 00 00 00 e0 c1 d1  |................|
00000070  e2 80 e3 05 12 d2 d5 06  e1 80 00 00 00 e2 ff ed  |................|
00000080  20 d0 c0 e1 80 00 00 00  e0 d1 11 d1 06 00 e3     | ..............|
0000008f

stdin

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                    K                             

stdout

                                 !1

stderr

/root/golfish/golfish.rb:280: warning: constant ::Fixnum is deprecated
/root/golfish/golfish.rb:79: warning: constant ::Fixnum is deprecated
/root/golfish/golfish.rb:94:in `block in exec!': undefined method `-' for nil:NilClass (NoMethodError)
	from /root/golfish/golfish.rb:49:in `loop'
	from /root/golfish/golfish.rb:49:in `exec!'
	from /root/golfish/golfish.rb:299:in `<main>'

strace