There are three brothers named A, B, and C. The age relationships among them are given by three characters $S_{\mathrm{AB}}, S_{\mathrm{AC}}, S_{\mathrm{BC}}$, which mean the following:

• If $S_{\mathrm{AB}}$ is <, then $A$ is younger than $B$; if it is >, then $A$ is older than $B$.
• If $S_{\mathrm{AC}}$ is <, then $A$ is younger than $C$; if it is >, then $A$ is older than $C$.
• If $S_{\mathrm{BC}}$ is <, then $B$ is younger than $C$; if it is >, then $B$ is older than $C$.

Who is the middle brother, that is, the second oldest among the three?

The input is given from Standard Input in the following format:
$S_{\mathrm{AB}}$ $S_{\mathrm{AC}}$ $S_{\mathrm{BC}}$

Print the name of the middle brother, that is, the second oldest among the three.

• Each of $S_{\mathrm{AB}}, S_{\mathrm{AC}}, S_{\mathrm{BC}}$ is < or >.
• The input contains no contradictions; that is, there always exists an age relationship that satisfies all given inequalities.

B

Since $A$ is younger than $B$, and $B$ is younger than $C$, we can determine that $C$ is the oldest, $B$ is the middle, and $A$ is the youngest. Hence, the answer is B.