For this Test case , AC solution gives output 2 which should be 1.

25 28
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 1
5 19
19 20
20 21
21 22
22 23
23 24
24 25
25 14
15 22
6 22
1 10 22

Edited by author 20.02.2020 05:33

Edited by author 20.02.2020 05:33