idnr: 780

			2
4	1			2
3
	4		1
3

Difficulty: Super easy

idnr: 512

				4
	2
	1
	3			4
3	2			1

Difficulty: Super easy

idnr: 915

3			1
2
1		2
	3

Difficulty: Super easy

idnr: 313

			1
	2
		1
			3
3	2

Difficulty: Easy