Https://ide.codingblocks.com/s/373811

My code is running on coding blocks ide but on codechef it gives runtime error. Why ?

hello @nidhigupta847

in ur code u r accessing index n of array a, so declare ur array a of size n+1.

cb ide allows invalid index access thats why it is working

Changed that but still getting runtime error

pls share the question link and also mention the test case for which it is giving that error