I submitted this to 527C: h[submission:167938194]
I'm sure that it's O(nlogn) ($$$n \leq 2 \times 10^5$$$), and I TLEed on 7.
Please help me!
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I think your solution took more time than what was allowed for the problem. That is why it is showing TLE.
It's not a TLE.
Your code return Exit Code 134. You have some troubles with pointers on this test.
Try to debug it and check what does your multisets returns to you.