MelonsWatermelons.cs

using System;

class MelonsWatermelons
{
    static void Main()
    {
        int start = int.Parse(Console.ReadLine());
        int days = int.Parse(Console.ReadLine());
        int melons = 0;
        int waterMelons = 0;

        for (int i = 0; i < days; i++)
        {
            switch (start)
            {
                case 1:
                    waterMelons++;
                    break;
                case 2:
                    melons += 2;
                    break;
                case 3:
                    waterMelons++;
                    melons++;
                    break;
                case 4:
                    waterMelons += 2;
                    break;
                case 5:
                    waterMelons += 2;
                    melons += 2;
                    break;
                case 6:
                    waterMelons++;
                    melons += 2;
                    break;
                case 7:
                    break;
                default:
                    Console.WriteLine("Wrong Input");
                    break;
            }
            start++;
            if (start == 8)
            {
                start = 1;
            }
        }
        if (melons == waterMelons)
        {
            Console.WriteLine("Equal amount: "+melons);
        }
        else if (melons > waterMelons)
        {
            melons -= waterMelons;
            Console.WriteLine(melons + " more melons");
        }
        else
        {
            waterMelons -= melons;
            Console.WriteLine(waterMelons + " more watermelons");
        }
    }
}