Solved by hackfool

#	Title	# Solved	Avg. Tries
15649	N과 M (1) STANDARD	53,564	1.58
2750	수 정렬하기 STANDARD	92,499	1.72
2557	Hello World STANDARD	369,499	2.53
1753	최단경로	38,097	3.80
1260	DFS와 BFS STANDARD	76,773	2.60

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