Solved by principia

#	Title	# Solved	Avg. Tries
1000	A+B STANDARD	332,679	2.59
1001	A-B STANDARD	285,958	1.45
1025	제곱수 찾기	2,928	2.81
1085	직사각형에서 탈출	64,667	1.52
2170	선 긋기	8,212	2.79
2557	Hello World STANDARD	367,674	2.54
10699	오늘 날짜 STANDARD	38,476	1.86
10872	팩토리얼	85,271	1.79
15439	Vera and Outfits STANDARD	14,943	1.16
15552	빠른 A+B STANDARD	134,524	2.20

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