0
oil
1
1
0
1
0
4
4
3
3
2
0
0
0
2
3
2
2
1
1
0
0
4
1
1
2
1
3
3
2
3
1
2
3
3
1
2
1
2
2
0
3
4
1
1
1
2
1
1
1
