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

namespace KULE
{
    class Program
    {
        private static int spheres;
        private static int minLeft = 1;
        private static int maxLeft;
        private static bool oddIsLight;

        static void Main(string[] args)
        {
            spheres = maxLeft = int.Parse(Console.ReadLine());
            oddIsLight = Triage();
            while (minLeft != maxLeft)
            {
                Cull();
            }
            Console.WriteLine("ANSWER {0}{1}", oddIsLight ? "-" : "", minLeft);
        }

        static bool Triage()
        {
            int third = spheres / 3;
            var first = Weigh(third, 1);
            var second = Weigh(third, third + 1);
            if (first == 0)
            {
                minLeft = third * 2 + 1;
                maxLeft = third * 3;
                if (second > 0) return false;
                if (second < 0) return true;
                return CheckRemainder();
            }
            if (second == 0)
            {
                maxLeft = third;
                return (first > 0) ? true : false;
            }
            minLeft = third + 1;
            maxLeft = third * 2;
            return (first > 0) ? false : true;
        }

        static bool CheckRemainder()
        {
            var first = Weigh(1, spheres - 1);
            if (spheres % 3 == 1)
            {
                minLeft = spheres;
                return first > 0 ? false : true;
            }
            else
            {
                var second = Weigh(1, spheres - 2);
                if (second == 0)
                {
                    minLeft = spheres;
                    return first > 0 ? false : true;
                }
                minLeft = maxLeft = spheres - 1;
                return first > 0 ? true : false;
            }
        }

        static void Cull()
        {
            var third = (maxLeft - minLeft + 1) / 3;
            if (third == 0) third = 1;
            var result = Weigh(third, minLeft);
            int oddThird;
            switch (result)
            {
               case -1:
                    oddThird = oddIsLight ? 1 : 0;
                    break;

                case 1:
                    oddThird = oddIsLight ? 0 : 1;
                    break;

                default:
                    oddThird = 2;
                    break;
            }
            minLeft = oddThird * third + minLeft;
            if (oddThird < 2) maxLeft = minLeft + third - 1;
        }

        static int Weigh(int num, int from)
        {
            Console.WriteLine("WEIGHT {0} {1}", num, String.Join(" ", Enumerable.Range(from, num * 2)));
            var result = Console.ReadLine();
            return result == "LEFT" ? -1 : result == "RIGHT" ? 1 : 0;
        }
    }
}