BOJ 13178. 목공
제4회 kriiicon 5
제4회 kriiicon 5
ICPC PACNW Regional Div1C/Div2J
BOJ 1129
AMPPZ 2012 - H
IATI 2016 - A3
ICPC Asia Regional Daejeon 2017 - I
BOI 2009 - 5
COI 2009 - 2 (modified)
BOI 2009 - 1
COCI 2006/2007 Contest #6 - 5
IATI 2016 A1
BOJ 1040