using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication2
{
    class Program
    {
        static int NWW(int a, int b)
        {
            int min = b;
            int max = a;
            int NWD = 1;

            if(a <= b)
            {
                min = a;
                max = b;
            }

            for (int i = 1; i <= min; i++)
            {
                if (min % i == 0 && max % i == 0)
                    NWD = i;
            }

            return (a/NWD)*b;

        }

        static void Main(string[] args)
        {

            Console.WriteLine(NWW(100,70));

           Console.ReadLine();

        }
    }
}