50   5   2
1 1 3 2 3
1 6
8 4
19   0
4   0
18   0
20   1
10   0
13   0
17   0
15   0
3   0
10   1
14   1
18   1
11   1
17   0
11   1
9   1
8   0
6   1
6   0
6   1
5   0
7   1
4   0
11   0
16   1
18   1
7   1
7   1
15   0
5   1
13   1
14   0
4   0
19   1
14   0
17   0
2   1
8   0
7   0
13   0
12   0
3   0
15   1
5   0
6   0
4   0
14   0
5   1
15   0
6   1
