idnr: 3670

	4

			3
	3	2

Difficulty: Super easy (0)

idnr: 1312

	2
	3
		1
		4

Difficulty: Super easy (0)

idnr: 257

1
			1
4
			4

Difficulty: Super easy (0)

idnr: 3895

2
3
		3
			4

Difficulty: Super easy (0)