using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
    class Program
    {
        static void Main(string[] args)
        {
            int a = 0;
           for (int i = 0; i < 9; i++) {
                a+= int.Parse(Console.ReadLine());
            }
            Console.WriteLine(55-a);
        }
    }