using System;
public class Program
{
public static void Main()
Console.WriteLine("x=");
double x = int.Parse(Console.ReadLine());
Console.WriteLine("y=");
double y = int.Parse(Console.ReadLine());
Console.WriteLine("z");
double z = int.Parse(Console.ReadLine());
double M = (x * x) + (2 * y) - (z / 10);
Console.WriteLine("rezultat:");
Console.WriteLine(M);
}