|Codeforces Round #573 (Div. 2)|
Tokitsukaze is one of the characters in the game "Kantai Collection". In this game, every character has a common attribute — health points, shortened to HP.
In general, different values of HP are grouped into $$$4$$$ categories:
The above-mentioned $$$n$$$ can be any integer.
These $$$4$$$ categories ordered from highest to lowest as $$$A > B > C > D$$$, which means category $$$A$$$ is the highest and category $$$D$$$ is the lowest.
While playing the game, players can increase the HP of the character. Now, Tokitsukaze wants you to increase her HP by at most $$$2$$$ (that is, either by $$$0$$$, $$$1$$$ or $$$2$$$). How much should she increase her HP so that it has the highest possible category?
The only line contains a single integer $$$x$$$ ($$$30 \leq x \leq 100$$$) — the value Tokitsukaze's HP currently.
Print an integer $$$a$$$ ($$$0 \leq a \leq 2$$$) and an uppercase letter $$$b$$$ ($$$b \in \lbrace A, B, C, D \rbrace$$$), representing that the best way is to increase her HP by $$$a$$$, and then the category becomes $$$b$$$.
Note that the output characters are case-sensitive.
For the first example, the category of Tokitsukaze's HP is already $$$A$$$, so you don't need to enhance her ability.
For the second example:
Therefore, the best way is to increase her HP by $$$1$$$ so that the category of her HP becomes $$$B$$$.