4
30
6 -8
-7 5
1 10
10 4
1 -9
-5 -6
-4 -2
10 5
7 -7
-1 -2
8 2
-1 8
0 6
-10 5
1 7
10 1
-5 -3
-2 -7
10 9
-10 -2
5 2
-9 -2
-7 -9
-5 10
0 -8
6 5
4 0
-4 -5
-9 -4
-7 -1
30
6 9
-9 1
0 2
1 0
0 -5
-9 8
6 -10
3 -10
-5 7
-6 -6
-4 -7
1 -2
5 8
-3 5
-9 9
10 5
-2 7
1 -7
3 9
-5 -6
-8 -5
-4 -2
0 -10
8 -10
-5 8
-9 -7
2 3
1 2
-1 -1
0 9
40
-8 -3
10 -4
5 -8
-9 9
-6 -5
4 1
1 0
2 -8
-4 6
3 9
-9 -6
7 -3
-2 6
-2 4
-2 9
-7 7
-3 3
6 -10
3 7
0 2
6 -2
-7 -3
-2 -3
7 -4
6 -5
-5 -10
8 -10
-10 -2
-9 2
-5 -1
-3 -4
-10 8
-10 1
1 -5
5 -4
-9 -4
3 -10
5 6
8 -8
4 2
40
0 1
0 2
0 3
0 4
0 5
0 6
0 7
0 8
0 9
0 10
0 -1
0 -2
0 -3
0 -4
0 -5
0 -6
0 -7
0 -8
0 -9
0 -10
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
-1 -1
-1 -2
-1 -3
-1 -4
-1 -5
-1 -6
-1 -7
-1 -8
-1 -9
-1 -10