using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Odd_Even_Position
{
    class Program
    {
        static void Main(string[] args)
        {
            double N = double.Parse(Console.ReadLine());
            double newNum;
            double OddMaxValue = double.MinValue;
            double OddMinValue = double.MaxValue;
            double EvenMaxValue = double.MinValue;
            double EvenMinValue = double.MaxValue;
            double OddSum = 0;
            double EvenSum = 0;
            for (int i = 1; i <= N; i++)
            {
                newNum = double.Parse(Console.ReadLine());
                if (i % 2 == 0)
                {
                    if (EvenMaxValue < newNum)
                    {
                        EvenMaxValue = newNum;
                    }
                    if (EvenMinValue > newNum)
                    {
                        EvenMinValue = newNum;
                    }
                    EvenSum += newNum;
                }
                else if (i % 2 == 1)
                {
                    if (OddMaxValue < newNum)
                    {
                        OddMaxValue = newNum;
                    }
                    if (OddMinValue > newNum)
                    {
                        OddMinValue = newNum;
                    }
                    OddSum += newNum;
                }
            }
            Console.WriteLine($"oddsum= {OddSum} ");

            if (OddMinValue < double.MaxValue)
            {
                Console.WriteLine($"oddmin= {OddMinValue}");
            }
            else Console.WriteLine("oddmin= No");

            if (OddMaxValue > double.MinValue)
            {
                Console.WriteLine($"oddmax= {OddMaxValue}");
            }
            else Console.WriteLine("oddmax= No");

            Console.WriteLine($"evensum= {EvenSum} ");

            if (EvenMinValue < double.MaxValue)
            {
                Console.WriteLine($"evenmin= {EvenMinValue}");
            }
            else Console.WriteLine("evenmin= No");

            if (EvenMaxValue > double.MinValue)
            {
                Console.WriteLine($"evenmax= {EvenMaxValue}");
            }
            else Console.WriteLine("evenmax= No");
        }
    }
}