perebor

class Program
{
    static void Main()
    {
        int N; int S;
        int[] numbers;
        using (StreamReader reader = new StreamReader("input.dat"))
        {
            string line;
            line = reader.ReadLine();
            string[] parts = line.Split(' ');
            int.TryParse(parts[0], out N);
            numbers = new int[N];
            int.TryParse(parts[1], out S);
            line = reader.ReadLine();
            parts = line.Split(' ');
            for (int i = 0; i < N; i++)
            {
                int item;
                int.TryParse(parts[i], out item);
                numbers[i] = item;

            }
        }

        int maxOperations = (int)Math.Pow(2, N - 1);
        using (StreamWriter writer = new StreamWriter("output.dat"))
        {
            for (int i = 0; i < maxOperations; i++)
            {
                int currentSum = numbers[0];
                List<char> operators = new List<char>();

                for (int j = 0; j < N - 1; j++)
                {
                    if ((i & (1 << j)) != 0)
                    {
                        currentSum += numbers[j + 1];
                        operators.Add('+');
                    }
                    else
                    {
                        currentSum -= numbers[j + 1];
                        operators.Add('-');
                    }
                }

                if (currentSum == S)
                {
                    string resultExpression = numbers[0].ToString();
                    for (int j = 0; j < N - 1; j++)
                    {
                        resultExpression += " " + operators[j] + " " + numbers[j + 1];
                    }
                    writer.Write(resultExpression + " = " + S);
                    Console.WriteLine(resultExpression + " = " + S);
                    return;
                }
            }
            writer.Write("No solution");
            Console.WriteLine("No solution");
        }
    }
}