1
0
1
0
1
0
1
0
1
0
1
0
7
7
2
2
3
3
1
0
2
1
2
1
1
0
1
0
2
1
1
0
1
0
6
7
4
3
2
2
4
4
1
0
1
0
2
1
8
13
1
0
1
0
2
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
3
2
1
0
1
0
1
0
1
0
2
1
2
1
3
2
1
0
1
0
5
4
1
0
1
0