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

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

            for (int i = 0; i < n; i++)
            {
                string input = Console.ReadLine();

                if (input.Contains(" "))
                {
                    int index = input.IndexOf(" ");
                    Int64 firstSum = 0;
                    Int64 secondSum = 0;
                    Int64 tempForFirstNum = 0;
                    Int64 tempForSecondNum = 0;

                    string firstLoweredString = input.Remove(index);
                    Int64 firstLoweredStringIntoNum = Int64.Parse(firstLoweredString);
                    tempForFirstNum = Math.Abs(firstLoweredStringIntoNum);

                    string secondLoweredString = input.Remove(0, (firstLoweredString.Length + 1));
                    Int64 secondLoweredStringIntoNum = Int64.Parse(secondLoweredString);
                    tempForSecondNum = Math.Abs(secondLoweredStringIntoNum);


                    if (firstLoweredStringIntoNum > secondLoweredStringIntoNum)
                    {
                        do
                        {

                            Int64 lastDigit = tempForFirstNum % 10;
                            firstSum += lastDigit;
                            tempForFirstNum /= 10;

                        } while (tempForFirstNum > 0);


                        Console.WriteLine(firstSum);
                    }
                    else
                    {
                        do
                        {
                            Int64 lastDigit = tempForSecondNum % 10;
                            secondSum += lastDigit;
                            tempForSecondNum /= 10;

                        } while (tempForSecondNum > 0);
                        Console.WriteLine(secondSum);
                    }


                }
            }
        }
    }
}