4
2
2
0
4
0
0
4
4
0
2
0
0
2
2
2
2
0
0
2
2
4
0
2
2
4
4
4
2
21
2
0
4
2
2
4
2
2
2
0
0
0
6
0
2
2
2
2
2
2
2
0
0
4
0
0
0
0
2
0
2
2
0
0
2
2
2
2
0
2
2
0
2
0
6
4
2
0
0
4
0
0
2
0
0
0
0
0
0
2
2
2
2
0
2
0
0
0
2
0
0
0
4
0
0
0
0
2
2
2
4
0
2
0
0
0
0
2
0
0
2
0
0
0
0
0
0
2
2
2
0
0
0
0
0
2
2
2
0
0
4
2
0
4
0
2
0
0
0
2
2
0
0
0
2
0
2
2
0
2
2
0
2
4
0
2
2
2
4
2
4
0
2
0
0
2
0
2
4
2
0
0
2
2
2
2
2
0
0
2
4
0
0
2
4
2
0
0
2
0
0
2
0
0
0
2
2
4
0
0
0
2
0
0
0
2
4
8
2
2
0
0
0
0
4
2
4
2
0
0
2
0
0
2
0
6
0
2
0
0
2
2
0
2
4
2
4
2
2
0
0
2
22
2
0
0
0
2
0
2
0
2
4
2
2
2
0
0
0
0
2
2
0
0
0
0
0
2
4
6
0
0
4
0
2
2
4
0
