Solved by cheongsan16

#	Title	# Solved	Avg. Tries
2557	Hello World STANDARD	346,873	2.54
10757	큰 수 A+B STANDARD	42,988	1.99
10869	사칙연산 STANDARD	221,499	2.23
13410	거꾸로 구구단	2,725	1.61

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