2
2
2
2
0
2
0
0
0
2
0
4
0
0
4
2
4
0
0
0
2
0
0
4
0
0
2
0
0
4
4
10
0
2
2
4
4
2
2
4
4
2
0
15
2
4
2
0
4
0
0
0
8
2
0
4
0
4
0
0
0
4
0
0
6
4
2
0
8
4
6
0
2
2
2
2
0
2
4
4
2
0
2
2
0
0
2
4
2
4
2
2
4
2
2
4
2
4
0
4
0
4
0
2
4
4
19
4
0
0
4
2
4
4
2
2
2
2
4
2
2
8
0
4
2
2
11
6
0
6
2
0
4
8
2
8
7
8
6
2
4
8
8
6
0
15
2
0
11
4
0
2
0
2
2
2
0
0
0
0
0
4
4
6
0
4
2
4
2
11
0
6
4
2
0
10
2
0
0
2
0
0
0
2
0
6
2
2
2
0
6
6
0
4
0
2
33
4
0
0
0
0
0
2
0
0
0
2
0
2
0
0
4
0
2
0
2
2
4
6
2
2
2
4
2
2
0
2
2
0
0
2
6
0
0
2
0
2
0
2
0
2
2
0
0
0
2
2
0
0
0
0
2
2
2
0
0
0
0
0
2
2
2
0
4
0
0
2
0
2
0
15
0
2
0
2
0
2
0
0
7
0
2
8
2
0
4
4
