2
2
4
2
0
2
2
6
4
0
2
2
0
4
0
0
4
2
2
0
2
2
2
0
2
0
2
2
0
2
2
9
2
4
0
0
0
2
2
0
2
2
4
0
0
2
2
0
2
4
4
2
4
2
2
2
2
4
2
0
4
0
0
0
0
0
4
2
2
4
2
2
2
2
0
0
0
0
2
0
2
4
2
0
0
0
0
0
0
7
0
0
4
4
2
4
0
2
0
2
1
2
2
2
0
0
2
0
0
0
2
0
0
0
0
2
0
6
4
2
0
0
0
2
0
0
0
0
0
2
0
4
0
0
0
2
2
4
0
2
0
0
2
2
0
0
0
0
9
4
2
4
5
2
2
0
0
0
2
0
0
0
0
2
2
3
0
0
0
4
0
2
0
2
0
2
0
4
2
0
0
2
0
2
0
0
4
2
2
4
0
0
4
0
0
0
0
4
0
0
0
2
0
0
0
0
0
0
2
2
0
4
0
2
2
2
0
2
4
2
2
0
2
2
2
2
2
0
2
0
0
0
0
2
2
3
2
2
4
0
4
2
2
0
2
0
0
2
0
0
2
0
2
0
1
2
2
2
2
0
2
2
4
2
2
2
2
2
0
0
0
0
2
2
2
0
0
2
2
4
2
0
2
2
2
2
0
0
