Solved by yds05197

#	Title	# Solved	Avg. Tries
2557	Hello World STANDARD	353,800	2.54
1978	소수 찾기 STANDARD	87,956	2.11
1929	소수 구하기	64,004	3.55
1009	분산처리	23,762	4.10
1008	A/B STANDARD	226,793	2.90
1001	A-B STANDARD	274,976	1.44
1000	A+B STANDARD	320,174	2.59

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