[설탕 배달]06-12

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
 
namespace TestSugarDelivery
{
    public class App
    {
        public App()
        {
 
        }
 
        public void Start()
        {
            int a = 2;
            this.SugerDelivery(a);
            a = 3;
            this.SugerDelivery(a);
            a = 5;
            this.SugerDelivery(a);
            a = 7;
            this.SugerDelivery(a);
            a = 8;
            this.SugerDelivery(a);
            a = 11;
            this.SugerDelivery(a);
            a = 13;
            this.SugerDelivery(a);
            a = 15;
            this.SugerDelivery(a);
            a = 18;
            this.SugerDelivery(a);
        }
 
        public void SugerDelivery(int a)
        {
            Console.WriteLine("배달할 무게 : {0}", a);
            int suger = a;
            int kg5 = 0;
            int kg3 = 0;
 
            if (suger % 5 == 0)
            {
                kg5 = suger / 5;
                Console.WriteLine("설탕봉지 : {0}개", kg5 + kg3);
 
            }
            else
            {
                while (true)
                {
                    if (suger - 5 > 0)
                    {
                        suger -= 5;
                        kg5++;
                    }
                    if (suger % 3 == 0)
                    {
                        kg3 = suger / 3;
                        Console.WriteLine("설탕봉지 : {0}개", kg5 + kg3);
                        break;
                    }
                    if (suger - 5 < 0)
                    {
                        Console.WriteLine("-1");
                        break;
                    }
                }
            }
            Console.WriteLine();
        }
    }
}