2
5
0 0
10 0
20 0
30 0
30 10
4
1 2
2 3
3 4
4 5
2
1 2 4
3 2 2
5
-10 0
0 0
0 -10
0 -20
0 -30
4
1 2
2 3
3 4
4 5
1
4 1 3
1 1
2 1
4
3
4 3
0 0
5 0
2
1 2
2 3
0
3
0 0
3 4
0 5
2
1 2
1 3
1
2 3 4
4
0 13
0 0
13 0
13 13
4
1 2
1 4
2 3
2 4
0
4
5 12
0 0
-7 17
-12 5
4
1 2
2 3
2 4
4 3
0
1 1
4 1
4
3
0 0
2 0
0 4
2
1 2
1 3
0
3
0 0
-2 0
0 4
2
1 2
1 3
1
1 4 1
3
0 0
1 0
0 2
2
1 2
1 3
1
1 4 1
3
0 0
2 0
0 4
2
1 2
2 3
0
1 1
4 1
0