2
0
4
2
2
0
2
4
2
2
2
0
2
0
2
4
0
2
0
0
0
2
0
2
2
2
2
3
0
0
2
0
2
4
0
2
2
0
0
2
0
0
0
2
0
0
2
2
2
2
2
2
0
2
2
0
0
2
0
2
4
2
2
2
0
2
0
4
2
0
2
2
0
0
2
2
4
0
2
4
0
4
4
2
2
2
0
2
0
2
4
0
0
2
2
2
2
4
21
2
2
0
2
0
2
2
0
0
0
0
4
2
2
4
4
0
4
2
0
2
0
0
2
4
2
0
2
2
2
2
2
0
0
0
0
0
2
0
0
0
19
2
4
0
2
0
2
2
4
2
2
2
4
0
4
2
2
4
0
2
4
4
4
11
0
2
2
2
4
0
2
4
2
2
0
0
2
0
4
2
0
2
0
2
4
0
4
0
15
0
2
0
2
0
2
0
2
0
4
2
2
2
0
2
2
2
2
2
0
0
2
2
4
0
2
0
0
2
2
2
2
4
2
2
0
0
0
0
4
4
19
0
4
2
0
0
0
4
2
4
0
0
0
2
2
2
2
0
4
2
4
4
0
4
0
0
2
2
4
0
4
2
4
2
0
2
0
0
17
2
0
0
2
4
2
2
2
2
2
2
4
2
2
2
0
2
2
2
