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