Getting run time error but AC on submition

1

I’m getting a runtime error when running the program but ac when submitting the program. Is anybody else having same problem? Do you know why?

2

If it’s not an ongoing contest, link your submission.

3

It’s very likely that this comment will fix your issue

4

It is a problem of July long contest.

5

are you running it locally or on codechef. If you are testing it on codechef then it might possible that you haven’t provided input.

6

Thanks you saved me. I usually try to run it and when I get some error, try to fix it without submitting and then quit, if I couldn’t get it running without any errors.
I wish I had asked this question long before.