CF1952J Help, what does it mean to be "Based"

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Sup, gimme a single integer $ x $ ( $ 1 \le x \le 4 $ ) homie uwu :3

If $ x = 1 $ , spit out some based code that, like when ya feed it two integers $ a $ and $ b $ , it hands over their sum. If $ x = 2 $ , slap some based code that takes an integer $ a $ and returns its absolute value like magic, no cap. If $ x = 3 $ , check this out: blaze some based code that grabs an integer $ n $ ( $ 1 \le n \le 50 $ ) and an array $ a $ of $ n $ distinct integers, then flexes the maximum value real quick. If $ x = 4 $ , toss me some based code that snatches an integer $ n $ ( $ 1 \le n \le 50 $ ), an array $ a $ of $ n $ distinct integers and an integer $ k $ ( $ 1 \le k \le n $ ), then nails down that $ k $ -th largest value in the array. Get it, fam!

Slide into the "My Submissions" page and vibe check ur code by clicking on its ID. You'll see just how based or cringe it is.