AOJ 0384 Dudeney Number

Solved Users (link to submissions)
abcdematukiyo
akiracenter
Ar_myon
atjh16
bal4u
beet
c64qh33
c7c7
CBCrt
clavis1107
colorcat434
ctrv838p
d4cddd
ecto0310
ei1333
Empress
endered
f15m39lk18
face4
fastso
fenger0126
flippergo
gondust
hamayanhamayan
harady
Harry325Kitajima
ikkun1103
imulan
ink_aki
isp
kanekane
Kaz_nl
kenken714
khagiwara
kmcyuma
KowerKoint
kr0530
ktnsmh
kuwaaaaaaaaaaaaaaaaa
kyuichi
Lafolia
lafson
limonene51
masa002
mhrb_minase
naoto172
ndykt
nii
NOSS
odyk
osamusin
plain
polyomino
punipuni6417
ranomani13
Regent_50m
Ryoma_1208
sakasu1
sayachang
severrabaen
SHIN1105K
soysourcecpp
suibaka
sw20
tazoe
th90tk297
TKT29
treeone
tricom
tsugekoki
ugis
ume10
uyotagana
vjudge1
vjudge2
vjudge3
vjudge4
vjudge5
whalefromegg
WUonsite
yamamayumi9489
yebisu
yebityon
yoguretto
Yoshiakira
yudedako
yutaka
zaha66