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

namespace _2._7.Water_Overflow
{
    class Program
    {
        static void Main(string[] args)
        {
            int firstIn = int.Parse(Console.ReadLine());

            int capacity = 255;
            int total = 0;

            for(int i = 0; i < firstIn; i++)
            {
                int secondIn = int.Parse(Console.ReadLine());
                total += secondIn;

                if (total > capacity)
                {
                    Console.WriteLine("Insufficient capacity!");
                    total -= secondIn;
                }
            }
            Console.WriteLine(total);
        }
    }
}