this is link for question
https://www.codechef.com/problems-old/WAV2
what will be output for testcase:
5 1
1 3 5 100 9
-2
this is link for question
https://www.codechef.com/problems-old/WAV2
what will be output for testcase:
5 1
1 3 5 100 9
-2