static int GetFirstDigit(int k)
double lgg = k * Math.Log10(k);
int count = (int)lgg + 1;
double pow = lgg + 1 - count;
int firstDigit = (int)Math.Pow(10.0, pow);
public static void Main()
Console.WriteLine("UniLecs");
Console.WriteLine(string.Format("Answer = {0}", GetFirstDigit(3)));
Console.WriteLine(string.Format("Answer = {0}", GetFirstDigit(4)));
Console.WriteLine(string.Format("Answer = {0}", GetFirstDigit(5)));