2
no smoking
1
7
3
3
4
5
0
3
2
4
6
3
4
5
2
2
2
4
1
2
1
3
2
2
2
4
5
6
3
2
1
2
2
4
5
2
3
6
2
3
2
3
4
4
2
3
2
3
2
