#This runs before awk starts
BEGIN{
    total=0;
    evens = 0;
    odds = 0;
    counter=1;
}
#This is the loop that runs on each line of the file
{
    total=total+$1;
    counter = counter + 1;
    if($1 % 2 == 0){
        evens=evens+$1;
    }
    else{
        odds=odds+$1;
    }
}
#This runs after every line in the file has been processed.
END{
    print "evens = ", evens;
    print "odds = ", odds;
    print "total = ", total;
    print "average = ", total/counter;
}