#!/bin/sh

[ $# -ne 2 ] && exit 1

if ! [ -f "$1" ]; then
    exit 1
fi

if  ! [ "$2" -eq "$2" ] 2> /dev/null; then
    exit 1
fi

[ "$2" -lt 0 ] && exit 1

if [ "$2" -gt "$(wc -l < "$1")" ]; then
    exit 1
fi

line=$(head --lines="$2" "$1" 2> /dev/null | tail -n 1 | cut -d ';' -f 2-3 || exit 1)
c1=$(echo "$line" | cut -d ';' -f 1)
c2=$(echo "$line" | cut -d ';' -f 2)

echo "$c1 is $c2"