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

namespace YukiCoder
{
    class Program
    {
        static void Main(string[] args)
        {
            var v = Console.ReadLine().Split().Select(int.Parse).ToList();
            int na = v[0];
            int nb = v[1];
            if (na < 0)
            {
                na = -na;
                nb = -nb;
            }
            string S = (na > 0 && nb % na == 0) ? S = (nb / na).ToString() : "NO";
            Console.WriteLine(S);
            Console.ReadLine();
        }
    }
}