#!/bin/bash
tmp=$(mktemp)
sed -E '
h
s/(.)/ \1/g
s/^/unset/p
g
s/(.)/ $((\1+=1))/g
s/^/:/p
g
s/(.)/$\1/g
s/^/echo /' input.txt | sh >$tmp
echo $(($(grep -c 2 $tmp) * $(grep -c 3 $tmp)))
rm $tmp