4
strip
1
0
1
1
1
1
1
2
2
1
2
4
2
4
0
2
3
1
4
1
3
1
1
1
4
3
1
2
3
1
1
3
2
2
2
2
3
2
2
6
1
0
1
0
2
0
1
2
2
