1
bottom
10
1
3
2
15
6
5
0
1
0
0
1
4
1
1
0
0
1
2
0
0
2
0
4
0
79
2
0
0
0
0
1
0
0
3
2
15
4
2
0
0
0
0
1
0
0
0
0
1
0
2
2
0
0