//[TestCase(@"1 1 20")]
public void MainFlow(string inputString)
{
var input = new StringReader(inputString);
var algor = new FibonacciModified();
string[] t1T2n = input.ReadLine().Split(' ');
int t1 = Convert.ToInt32(t1T2n[0]);
int t2 = Convert.ToInt32(t1T2n[1]);
int n = Convert.ToInt32(t1T2n[2]);
string result = algor.fibonacciModified(t1, t2, n);
}
public void TestFibonacciModified()
{
//https://www.hackerrank.com/challenges/fibonacci-modified/problem
Assert.AreEqual(5, FibonacciModified.fibonacciModified(0, 1, 5));
Assert.AreEqual(BigInteger.Parse("84266613096281243382112"), FibonacciModified.fibonacciModified(0, 1, 10));
}
