Solved by chegangang

#	Title	# Solved	Avg. Tries
2557	Hello World STANDARD	335,602	2.54
2420	Make a Difference STANDARD	27,357	2.17
2338	긴자리 계산	16,295	1.99
1330	두 수 비교하기 STANDARD	187,628	2.01
1271	엄청난 부자2	20,827	2.88
1008	A/B STANDARD	213,072	2.90
1001	A-B STANDARD	259,695	1.44
1000	A+B STANDARD	302,980	2.57

1