Solved by mshong1

#	Title	# Solved	Avg. Tries
30805	Lexicographically Largest Common Subsequence	1,154	3.18
30825	건공펀치 등차수열	163	2.25
31403	$A + B - C$	10,484	1.58
31458	!!초콜릿 중독 주의!!	603	1.34
32177	에어드롭	88	1.77
32498	Call for Problems	815	1.38
32867	피아노	39	1.41

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