Manoj_mk phoenix_beast117 sukhbir0609 1091857051 cai_lian_2023 HARSHdeep1234 (I think that's all of you)

That was me. Hi, I guess.

Or rather, it was you, submitting in an old version of Java, and using Arrays.sort(), that caused you to get hacked. Unfortunately, it's possible to make Arrays.sort() take O(n^2) time when sorting primitive data types — and that's because it ends up defaulting to quicksort, and if I use a certain script that I don't even understand properly, I can create an array specifically to cause quicksort to use the worst possible pivot at each iteration. That's why you all got hacked.

If you don't want to be hacked or FST, use Collections.sort(). But also, why don't you just use the newer Java version?