Solved by hamund2020

#	Title	# Solved	Avg. Tries
2557	Hello World STANDARD	353,723	2.54
5597	Who have not handed in ?	66,152	1.94
10807	개수 세기 STANDARD	81,326	1.62
10871	X보다 작은 수 STANDARD	153,553	1.84

1