Solved by opera_tive

#	Title	# Solved	Avg. Tries
13216	Badminton	232	1.28
13221	Manhattan	500	1.32
13222	Matches	588	1.15
13223	Sodium	1,182	2.77
13224	Chop Cup	415	1.07
13225	Divisors	896	1.14
13226	Divisors Again	182	1.40
13227	TicTacToe	164	1.83
13228	The REAL Manhattan distance	463	1.10
13229	Selection Sum	334	1.19
13234	George Boole	528	1.29
13235	Palindromes	2,284	1.40
13236	Collatz Conjecture	834	1.30
13237	Binary tree	275	1.26
13238	Bitcoin investment	216	1.12
13239	Combinations	269	1.36
13240	Chessboard	708	1.21
13241	LCM	15,237	1.58
13242	Harps and Tails	38	1.34
13244	Tree	788	1.95
13250	주사위 게임	503	1.49
13251	조약돌 꺼내기	2,213	2.35
13261	탈옥	604	2.40
13264	접미사 배열 2	511	1.63
13275	가장 긴 팰린드롬 부분 문자열	974	1.88
13277	큰 수 곱셈	10,174	1.46
13278	피보나치 합의 개수	46	3.28
13279	곱의 합 쿼리	211	4.68
13280	Selection of Participants of an Experiment	145	1.12
13281	Look for the Winner!	65	1.34
13288	A New Alphabet	204	1.73
13297	Quick Estimates	671	1.20
13298	Robotopia	87	3.59
13300	방 배정	11,124	1.68
13301	타일 장식물	6,293	1.93
13304	방 배정	1,987	1.66
13305	주유소	24,091	2.56
13308	주유소	1,143	3.97
13311	행운의 편지	1,800	1.77
13316	std::정렬부터 시작하는 디버깅 생활	399	2.59
13322	접두사 배열	914	1.63
13323	Sequence 1	625	1.70
13324	Sequence 2	468	1.82
13325	Binary Tree	1,468	1.82
13333	Q-Index	1,361	2.51
13334	Railway	3,401	2.66
13335	Trucks	8,028	1.75
13343	Block Game	195	1.39
13345	Completing the Square	129	1.20
13361	Highest Tower	341	2.60

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