#!/bin/bash

SUM=0

while read f; do
    TEMP1="$(echo ${f//[a-z]})"
    TEMP2="${TEMP1:0:1}${TEMP1:0-1}"
    for i in $TEMP2; do
        echo $SUM + $i
        SUM=$(( $SUM + $i ))
    done
done < input

echo $SUM