public void ProblemTest()
        {
            var problem = new Problem1();

            using (var reader = new StringReader(problem.Input))
                using (var writer = new StringWriter())
                {
                    var testCaseCount = int.Parse(reader.ReadLine());
                    for (var i = 0; i < testCaseCount; i++)
                    {
                        var answer = IsDivisibleBy7(reader.ReadLine()) ? "TAIP" : "NE";
                        writer.WriteLine($"Testas #{i+1}: {answer}");
                    }

                    Assert.IsTrue(problem.IsSoved(writer.ToString()));
                }
        }