2
strip
2
1
0
1
0
0
1
1
0
1
3
1
1
2
1
1
2
2
2
1
1
1
1
3
1
1
0
2
1
1
0
2
1
0
1
0
2
1
1
2
1
1
1
2
1
4
2
0
1
