Editorial for Arcadia Computing Contest 1 P2 - Chemistry

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Author: kevlu8

Hint 1

Is there a constant maximum value for $K$ ?

Hint 2

$K$ must either be $1$ , $2$ , or $4$ .

Solution

Simply alternate rows between the pattern $1, 2, 1, 2 \dots$ and $3, 4, 3, 4 \dots$

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