4
3 1 4 2
answer : 3

12
1 3 5 6 4 1 3 5 7 10 8 2
answer : 11

8
8 2 5 8 1 3 4 5
answer : 4

9
5 3 2 5 4 7 9 2 1
answer : 9

10
2 2 4 4 5 8 7 9 9 1
answer : 1

Edited by author 10.11.2013 18:43