# Who developed the mod function?

Calculus Level 5

After this problem Mayank and Akul have started hating the mod function;-

Let $$S$$ be $$\{ (x,y):|||x|-2|-1|+|||y|-2|-1|||=1\}$$

If $$S$$ is made up of a wire, find the $$length$$ of the wire.

We've got more for you at the set Mayank and Akul

PS: If brilliantly, it can be solved in a few steps

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