water overflow

using System;
using System.Linq;
using System.Collections.Generic;


namespace exampreparation
{
    class exam
    {
        static void Main(string[] args)
        {
            int times = int.Parse(Console.ReadLine());
            int sumwater = 0;
            int capacity = 255;

            for (int i = 0; i < times; i++)
            {
                int water = int.Parse(Console.ReadLine());

                capacity -= water;

                if (capacity < 0 )
                {
                    Console.WriteLine("Insufficient capacity!");
                    capacity += water;

                }
                else
                {
                    sumwater += water;
                }
            }

            Console.WriteLine(sumwater);
        }
    }
}