file.h

 interface MaxMass
    {
        int Max();
        int Min();
        int SetCount { get; set; }
    }
    class Mass : MaxMass
    {
        int Count;
        int [] Elem;
 
        public int this[int index]
        {
            get
            {
                return Elem[index];
            }
            set
            {
                Elem[index] = value;
            }
        }
        public int Max()
        {
            int result=Elem[0];
            for(int i=0;i<Elem.Length;i++)
                if (Elem[i]>Elem[result] )
                    result = i;
            return Elem[result];
        }
        public int Min()
        {
            int result = Elem[0];
            for (int i = 0; i < Elem.Length; i++)
                if (Elem[i] < Elem[result])
                    result = i;
            return Elem[result];
        }
   
        public int SetCount
        {
            get
            {
                return Count;
            }
            set
            {
                Elem = new int[value];
                Count = value;
 
            }
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Mass a = new Mass();
            a.SetCount = 10;
            for (int i = 0; i < a.SetCount; i++)
            {
                a[i] = int.Parse(Console.ReadLine());
            }
            Console.WriteLine();
            Console.WriteLine(a.Max());
            Console.ReadKey();
        }
    }