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

namespace SubsetSums_6
{
    class SubsetSums6
    {
        private static int _sumOfNumbers;
        private static List<int> _numbers;
        private static bool _isResult;

        //Method that calculate the possible sums of elements
        private static void CalculateSubset(int startingPosition, List<int> numbersForSum)
        {
            if (numbersForSum.Sum() == _sumOfNumbers && numbersForSum.Count > 0)
            {
                Console.WriteLine("{0} = {1}", string.Join("+", numbersForSum), _sumOfNumbers);
                _isResult = true;
            }
            for (int number = startingPosition; number < _numbers.Count; number++)
            {
                numbersForSum.Add(_numbers[number]);

                //Calling recursivly the method CalculateSubset
                CalculateSubset(number + 1, numbersForSum);
                numbersForSum.RemoveAt(numbersForSum.Count - 1);
            }
        }
        private static void Main(string[] args)
        {
            _sumOfNumbers = int.Parse(Console.ReadLine());
            string input = Console.ReadLine();

            //Check if "input" is empty string or null
            if (!String.IsNullOrWhiteSpace(input))
            {
                //parse input to collection of integers and Distinct the collecion
                //so we will be sure that we don't have dublicated elements
                _numbers = input.Split().Select(int.Parse).Distinct().ToList();
            }

            //Creating new collection for our subset of numbers
            List<int> subset = new List<int>();
            CalculateSubset(0, subset);

            //Check if collection of numbers has a result
            //if not print the message
            if (!_isResult)
            {
                Console.WriteLine("No matching subsets.");
            }
        }
    }
}