AGC018A

https://gyazo.com/783c32fab84daa98daab8903533862f0

Thoughts.

You can't make 1 when everything is even.

If there is a pair whose greatest common divisor is n, then n can be made.

The ball you used is also returned, so once again, if you subtract n from the largest number m, you can make all multiples of n less than or equal to m.

There are cases where this m is not a multiple of n.

If n is not 1, then find the largest ball for every remainder of mod n

Official Explanation

This is a mistake.

There are cases where this m is not a multiple of n.

Because we're looking for a public commitment.

Policy is OK.

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