#!/usr/bin/bash
set -e

declare arg="$1"

[[ -z $arg ]] && read -r arg

year=${arg:0:4}
month=${arg:4:2}
day=${arg:6:2}
hour=${arg:8:2}
min=${arg:10:2}
sec=${arg:12:2}

echo "$year/$month/$day $hour:$min:$sec"