AOJ 0365 Swapping Characters

Solved Users (link to submissions)
addeight
akusyounin0524
Aotsuki_
autumn_eel
Azaika
A_ru8743
bakasuke
bal4u
beet
c7c7
ChanKingSan2
culcul
d17202
dohatsu
E869120
ecasdqina
ei1333
ei1626
hamayanhamayan
hirorisuu
ianCK
kakakakaneko
kmcyuma
Kutimotitokura
kuwaaaaaaaaaaaaaaaaa
kzyKT
latte0119
luma
Luzhiled
masa002
maze1230
Meshedgear
mhrb_minase
mohejin
moon_watcher
naoki2016
naoto172
naraharaakito
nii
noshi91
NOSS
nxteru
platypus999
punipuni6417
rabelice
rankalee
rugby
Ryoga_0212
s1230146
s4y4
sayachang
SHIN1105K
statiolake
suibaka
tinumukiti631
tkmst201
veqcc
w_yuto0916
y32M71693993
yudedako
yu_ki_ina44