Need a test case to figure out the problem!

help
1

I’ve written this code for the COVID19 pandemic problem, but isn’t giving the correct answer. Could anyone help me figure out? If possible can I get a test case where this runs wrong???
Thank you.
https://www.codechef.com/viewsolution/31954816

2

Your code fails for this test case :
6
1 0 0 0 0 1

Answer should be NO but your code is giving YES.

3

https://www.codechef.com/viewsolution/31964207
Thank you for your time, I did fix it. But still WA!

4

It gives NZEC for the following case :
100
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

However the answer should be NO

Also, you don’t need to check if the constraints match or not. They are guaranteed to be according to the given constraints.