Problem Statement

In English note names, which are $1$ of the ways to represent musical pitch, "do re mi fa sol la ti do" correspond to CDEFGABC, respectively.

For each of A, C, D, F, and G, the note a semitone higher is A#, C#, D#, F#, and G#, respectively.

The note a semitone higher than E is F, and the note a semitone higher than B is C.

Given a note name $S$, tell us the name of the note a semitone higher than $S$.

Constraints

• $S$ is $1$ character from ABCDEFG

Input

The input is given from standard input in the following format.

$S$

Output

Among the note names a semitone higher than $S$, output the one that appears in the problem statement. Print a newline at the end.

Sample

C

C#

E

F