Time taken: 00:01
9
3
7
1
7
2
9
3
7
4
6
5
3
2
4
5
6
1
5
3
8
2
3
6
4
9
6
2
4
1
3
5
4
8
9
6
1
2
3
4
5
6
7
8
9
Delete
Check
Note
Strategy