#!/bin/bash
gcd() {
    local a=$1 b=$2
    while [ $b -ne 0 ]; do
        local temp=$b; b=$((a % b)); a=$temp
    done
    echo $a
}
lcm() {
    local a=$1 b=$2
    local g=$(gcd $a $b)
    echo $(( (a * b) / g ))
}
if [ $# -ne 2 ]; then
    echo "Usage: $0 <num1> <num2>"; exit 1
fi
echo "НОК($1, $2) = $(lcm $1 $2)"