[begin]
1 7
2 1
3 0
4 8
5 6
[end]
[begin]
1 1
2 7
3 1
4 8
5 -6
[end]
[begin]
1 10
2 7
3 1
4 17
5 3
[end]
[begin]
1 9
2 6
3 0
4 15
5 3
[end]
