FIT SKJ horolezci

#!/bin/bash

abs=0
rel=0
flag=0
retcode=0

for var in $@
do
if [[ $var =~ ^[-]?[1-9]{1}[0-9]*$  || $var == 0 ]]
then
    rel=$(($rel + $(echo $var | awk '{ print ($0>0?$0:-$0)}')))
    if [ $flag -eq 1 ]
    then
        abs=$(($abs + $var))
    fi
else
    if [[ $var =~ ^[A]{1}[-]?[1-9]{1}[0-9]*$ || $var == "A0" ]]
    then
        if [ $flag -eq 0 ]
        then
            abs=$(echo $var | sed s/A//)
            flag=1
        else
            temp=$(echo $var | sed s/A//)
            if [[ $temp != $abs ]]
            then
                retcode=2
            fi
        fi
    fi
fi
done

echo -n "R="$rel
if [ $flag -eq 1 ]
then
    echo -n " A=$abs"
fi
echo ""
exit $retcode