#!/usr/bin/env bash

declare -A A B C

A['X']=3
A['Y']=6
A['Z']=0
B['X']=0
B['Y']=3
B['Z']=6
C['X']=6
C['Y']=0
C['Z']=3
X=1
Y=2
Z=3
s=0

while read a b; do
  declare -n elf=$a
  declare -n me=$b
  let s+=$(( ${elf[$b]} + $me ))
done

echo $s