idnr: 259
1 2 3 4
2 3 1
4
Difficulty: Super easy
idnr: 918
3 2
1
2 3
1
Difficulty: Medium
idnr: 1187
2
2
3
1
3 1
Difficulty: Medium
idnr: 345
2
1
2 3
3 1
Difficulty: Easy