0
2
2
0
2
0
4
8
2
0
0
2
4
2
2
2
4
4
2
6
0
4
0
2
0
0
6
0
0
4
0
0
2
2
0
0
2
4
4
4
10
2
0
0
2
2
0
2
0
2
0
2
4
4
0
2
0
0
2
4
0
2
0
6
2
2
4
0
2
2
0
0
0
2
2
2
2
2
2
4
2
2
2
2
2
4
2
4
0
0
0
0
0
2
2
4
0
2
4
0
4
2
4
0
0
0
2
4
2
6
6
4
2
0
4
2
2
0
0
2
2
1
2
4
0
4
6
0
6
0
4
4
0
4
2
4
0
2
4
5
0
4
2
5
2
4
2
2
2
0
6
0
2
4
2
6
8
2
2
7
2
4
2
0
0
2
0
0
2
2
4
4
2
0
6
4
0
0
4
2
2
6
0
0
2
2
0
4
2
0
0
2
0
2
0
0
2
2
0
0
0
2
0
2
2
0
2
4
0
4
5
6
0
0
2
0
0
0
0
4
4
0
0
2
4
2
2
0
0
2
0
0
2
4
2
0
0
2
4
0
2
2
2
4
0
2
0
4
4
2
0
0
2
2
0
0
2
0
0
0
2
0
2
6
0
2
4
2
2
4
0
2
4
2
0
0
0
0
0
2
2
2
0
0
2
2
0
0
