Can you help me with the problem submission 311638226 — Codeforces. I cannot figure out what I am missing here

I was recently solving 1316E - Team Building problem but I couldn't understand why we sorted the audience array. Can anyone help?

Anybody who is willing to grind codeforces in the rating range of 1600-1800. Daily we will be solving 4 to 5 problems in this rating range.

Here is the 263750088 in my compiler it is running fine but getting runtime error at CF.