2
0
2
2
2
0
0
0
2
2
2
2
4
4
0
2
4
0
0
4
2
2
2
0
0
2
2
2
4
0
0
0
2
0
0
2
0
0
0
0
2
2
0
0
0
2
2
2
2
0
0
0
0
2
2
0
0
0
2
2
0
2
4
21
0
0
0
4
0
0
2
2
0
2
0
0
0
2
2
2
2
0
2
0
0
0
0
2
2
2
0
4
0
0
2
0
0
0
2
2
0
2
0
2
2
0
0
0
2
0
2
2
2
2
2
4
2
4
12
0
2
2
2
0
4
2
0
0
0
2
2
4
0
2
2
2
0
0
0
2
0
2
2
0
2
2
0
2
0
0
2
4
0
2
6
0
0
2
0
2
0
2
0
2
0
2
0
2
0
21
2
2
0
0
0
0
0
4
2
2
2
0
2
0
2
2
0
2
4
0
2
21
2
2
0
10
0
0
0
0
2
0
0
0
0
0
2
2
0
2
2
4
0
0
0
0
2
6
0
2
2
0
0
4
0
0
0
2
4
4
2
2
2
2
2
0
0
2
0
2
0
0
0
0
0
0
4
0
0
2
0
2
2
0
2
0
2
0
0
2
2
2
0
2
2
0
0
4
2
0
2
0
0
0
4
0
0
2
2
2
2
0
0
0
0
0
2
2
