public static void Main()
Console.WriteLine("vuvedi kolko e dulug izpita v minuti");
double k = double.Parse(Console.ReadLine());
Console.WriteLine("vuvedi v kolko chasa zapochva testa");
double h = double.Parse(Console.ReadLine());
Console.WriteLine("vuvedi v kolko minuti zapochva testa");
double m = double.Parse(Console.ReadLine());
double c = k-Math.Floor(k/60)*60+m;
Console.WriteLine("testa svurshva v {0}.{1} chasa", h, c);