5

2 -1
3
1 -1
2
3  2

2  0
3
1  6
2
3  2

3  -1
4  5
-1 1  5
2  1
1  6  10

1  0
4
1

4 -2
1 2 3
1 -1 1 -1
2 0 1
5 -1 11 5
5

2 -1
3
1 -1
2
3  2

2  0
3
1  6
2
3  2

3  -1
4  5
-1 1  5
2  1
1  6  10

1  0
4
1

4 -2
1 2 3
1 -1 1 -1
2 0 1
5 -1 11 5