#!/usr/bin/env bash
set -u
set -o pipefail
export LC_ALL=C
counts=(8 5 3)
total=0
for count in "${counts[@]}"; do
    ((total+=count))
done
[[ $total -eq 16 ]] || exit 1
step=0
while (( step < 2 )); do
    ((step+=1))
done
printf "Total %d sheets; while iterations %d\n" "$total" "$step"