Problem Order at the Yokohama Regional Contest (横浜大会問題の順序について)

The first three problems in the problem set, A, B, and C, are assumed to be the
easiest. They are in the order of estimated easiness.
The order of all other problems (problem D to the last one) is randomized irrespective of their difficulties.

最初の 3 問 A, B, C は、最も易しいと思われる 3 題で、
D 以降の問題の順序は難易度と関係なくランダムです。