1			2
					2
	6
				6
3
		2			1

Difficulty: Super easy (0)

	1			2
		4		1
	2		4
	5			4

Difficulty: Super easy (0)

4					1
6
5
					5
					6
1					2

Difficulty: Super easy (0)

5
				1
	2
					6

Difficulty: Super easy (0)