3
6
8
5
1
2
4
8
7
3
6
5
7
6
2
4
8
7
4
6
3
6
9
2
5
5
3
4
8
6
9
8
3
1
7
4
2
8
2
Delay:
10 ms
Solve
New
Erase
1
2
3
4
5
6
7
8
9