public static void Main()
a = Convert.ToInt32(Console.ReadLine());
b = Convert.ToInt32(Console.ReadLine());
c = Convert.ToInt32(Console.ReadLine());
double sinus = Math.Sin((double)(b+c)/16);
double s1 = Math.Pow((double)(a+b-3)/(a-b), (double)1/3);
double res = Math.Sqrt( a*sinus + s1 + 2.1);