HHC 2017 RPN Programming contest information and results thread

[Gene]

Winning RPN Program entry HHC 2017 by Roger Hill.

70 bytes

LBL "HAPPY"
"UN"
ABS
CLST
LASTX
X<>Y
LBL 01
RDN
ISG Z
LBL 02
10
/
ENTER
FRC
X^2
STO+ Z
RDN
INT
X != 0? (X NOT EQUAL TO ZERO)
GTO 02
X<>Y
2
10^X
*
4
X=Y?
GTO 03
SIGN
X !=Y? (X NOT EQUAL TO Y)
GTO 01
CLA
LBL 03
|- "HAPPY " (APPEND HAPPY AND A SINGLE SPACE)
FIX 0
CF 29
ARCL T
FIX 4
SF 29
AVIEW
END