20 10 20
1 1 1 1 0 0 1 1 1 1
1 1 1 0 0 0 1 0 1 0
0 0 0 1 1 1 0 1 0 1
0 1 1 0 1 1 0 0 0 0
1 1 1 1 0 1 1 1 0 0
1 0 0 1 1 1 0 0 0 1
1 1 0 0 1 1 0 1 0 0
1 1 0 1 0 0 0 0 1 0
0 1 1 1 0 0 0 1 0 1
0 0 0 0 0 1 0 0 0 0
8 5 2 2 9 5 2 8 1 1 7 3 6 2 4 5 1 3 6 1
1 2
2 3
3 4
2 5
4 6
3 7
2 8
4 9
8 10
1 11
4 12
11 13
1 14
12 15
4 16
2 17
14 18
13 19
3 20
5 6
8 6 8 1 8
5 15
8 9 2 7 2
5 5
7 1 8 6 7
5 8
5 7 6 2 2
5 15
2 2 1 7 8
5 19
2 7 4 9 7
5 11
5 7 9 7 3
5 5
3 5 7 1 1
5 14
8 6 10 5 3
5 14
10 6 7 7 2
5 6
10 5 2 3 3
5 1
5 10 7 3 6
5 1
9 8 5 5 10
5 4
10 10 9 2 4
5 13
5 5 10 3 6
5 11
9 5 7 10 9
5 12
10 3 1 6 7
5 16
7 5 5 3 2
5 15
7 1 4 7 4
5 19
2 8 4 1 3