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Use these two lines for fast IO at the start of the main function (can look at the below code).
I submitted the same code as yours for finding the errors; your code was correct. Your code with fast IO You can read this for Theory for fast IO
I also faced some similar types of issues. I used endl instead of "\n" and got TLE on 9 TC too.
TLE with endl
AC with "\n"
Happy Coding :)
Note that
cout.tie(0)
andcerr.tie(0)
actually do nothing. What this does is it ties an input stream (e.g. cin) to an output stream (e.g. cout), so that if you cin a variable, it flushes the output beforehand. This should make sense, because otherwise the following code will be very confusing to beginners, because it won't prompt:but tying cout/cerr (and clog as well) to nullptr or 0 do nothing, because they're not input streams