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

namespace Catapult_Attack
{
   public class StartUp
    {
        public static void Main()
        {
            int n = int.Parse(Console.ReadLine());

            List<int> wallList = Console.ReadLine()
                .Split(" ", StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse)
                .ToList();
            Stack<int> rockStack = new Stack<int>();

            for (int i = 1; i <= n; i++)
            {
                List<int> rockList = Console.ReadLine()
                    .Split(" ", StringSplitOptions.RemoveEmptyEntries)
                    .Select(int.Parse)
                    .ToList();
                AddWarriors(rockStack, rockList);

                if (i % 3 == 0)
                {
                    int additionalWall = int.Parse(Console.ReadLine());
                    wallList.Add(additionalWall);
                }

                while (rockStack.Count > 0 && wallList.Count > 0)
                {
                    int currentRock = rockStack.Pop();
                    int currentWall = wallList[0];

                    if (currentRock > currentWall)
                    {
                        currentRock -= currentWall;
                        rockStack.Push(currentRock);
                        wallList.RemoveAt(0);
                    }
                    else if (currentRock < currentWall)
                    {
                        currentWall -= currentRock;
                        wallList[0] = currentWall;
                    }
                    else
                    {
                        wallList.RemoveAt(0);
                    }
                }

                if (wallList.Count == 0)
                {
                    break;
                }
            }

            PrintOutput(wallList, rockStack);
        }

        private static void PrintOutput(List<int> wallList, Stack<int> rockStack)
        {
            if (wallList.Count == 0)
            {

                Console.WriteLine($"Rocks left: {String.Join(", ", rockStack)}");
            }
            else
            {

                Console.WriteLine($"Walls left: {String.Join(", ", wallList)}");
            }
        }

        private static void AddWarriors(Stack<int> rockStack, List<int> rockList)
        {
            foreach (var war in rockList)
            {
                rockStack.Push(war);
            }
        }
    }
}