Solved by ruddms

#	Title	# Solved	Avg. Tries
1000	A+B STANDARD	302,733	2.57
1001	A-B STANDARD	259,476	1.44
2557	Hello World STANDARD	335,345	2.54
5597	Who have not handed in ?	58,078	1.93
10807	개수 세기 STANDARD	71,029	1.61

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