namespace Solution {
  using NUnit.Framework;
  using System;

  [TestFixture]
  public class SolutionTest
  {
    [Test]
    public void MyTest()
    {
      Sum sum = new Sum();
      Assert.AreEqual(19, sum.GetSum(9, 10));
      Assert.AreEqual(21, sum.GetSum(11, 10));‭
      Assert.AreEqual(4294967292, sum.GetSum(2147483646, 2147483646));‭   
    }
  }
}