4
					10	6			2
2	3	5			8
4		6			3	10
	8		1	6					4
3					1	2		8
			2	5			1		8
				3			2	7	5
8			3	4
			5

Difficulty: Very easy (0)

			10						9
	7				6		10	3
		3		6					4
	2						6
	8	7					3	6
	3	10					9	7
		1						8
10					4		1
	1	6		10				4
4						2

Difficulty: Very easy (0)

					9				10
10		8				4	2
3			1	5
		2				5	9	1
		7						5
	4						6
	6	10	2				1
					4	6			2
		9	7				10		5
6				8

Difficulty: Very easy (0)

	7						9	8
					6		4
				3	9				6
	9	1	8					10
				2		6		1
	10		7		3
	1					9	6	4
9				5	8
		9		10
	3	8						9

Difficulty: Very easy (0)