2
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
2
1
3
2
3
7
2
1
4
3
1
0
3
5
1
0
4
4
2
1
1
0