argument=1


for n in "$@"
do

if [ -e $n ] 2>'/dev/null'
then
        echo "Argument #$argument: nespravny vstup"
    ((++argument))
    continue
fi

echo "$n" | egrep "^(-)?[[:digit:]]*$" >'/dev/null'
if [ $? -eq 0 ]
then
    #je to cislo

    if [ $n -eq 0 ]
    then
        #0
        echo "Argument #$argument: 1"
        ((++argument))
        continue
    fi

    if [ $n -lt 0 ]
    then
        #0>
        echo "Argument #$argument: nedefinovano"
        ((++argument))
        continue
    fi

    if [ $n -gt 0 ]
    then
        #1 2 3
        fact=1
        for((i=1;i<=n;++i))
        do
            ((fact*=i))
        done

        echo "Argument #$argument: $fact"
        ((++argument))
        continue
    fi



else
    #nie je to cislo
        echo "Argument #$argument: nespravny vstup"
        ((++argument))
        continue
fi


done

exit $#