0
no smoking
1
3
4
1
1
1
3
1
4
2
4
1
1
3
2
3
2
0
0
0
1
1
2
2
1
1
2
1
1
0
1
1
3
2
1
1
0
0
1
0
1
2
0
3
3
1
1
0
0
