Solved by ra16bit

#	Title	# Solved	Avg. Tries
31402	Tree Explorer (Hard)	28	2.71
31399	Aris, Clean Up! (Hard)	52	4.54
31398	Gas Station	50	2.30
31396	Overload Prevention	95	2.02
31395	Number of Sorted Contiguous Subsequences	556	2.05

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