using System;
using System.Linq;
using System.Numerics;

namespace ConsoleApp18
{
    class Program
    {
        static void Main(string[] args)
        {
            int numbers = int.Parse(Console.ReadLine());


            for (int i = 0; i < numbers; i++)
            {
                int sum = 0;
                double numMax = 0;
                double[] arr = Console.ReadLine().Split(" ").Select(double.Parse).ToArray();
                double numLeft = arr[0];
                double numRight = arr[1];
                numMax = numLeft;
                if (numLeft < numRight)
                {
                    numMax = numRight;
                }
                string maxNumberAbs = Math.Abs(numMax).ToString();
                for (int x = 0; x < maxNumberAbs.Length; x++)
                {
                    char digit = maxNumberAbs[x];
                    sum = sum + int.Parse(digit.ToString());
                }
                Console.WriteLine(sum);
            }
        }
    }
}