x
x
x
5 |
0
3 |
9
x5
1 |
0
x5
x5
x3
x3
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5
x5