x
4 |
15
0 |
1
5 |
11
1 |
3
0 |
5
x5
4 |
0
x5
1 |
1
x5
x5
0 |
1
x5
x4
x3
x3
x3
x5
x5
1 |
0
x5
x5
1 |
1
x5
x4
x4
x3
x3
x3
x3