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