FromLeftToRight

using System;
using System.Text.RegularExpressions;
using System.Numerics;
using System.Linq;

namespace FromLeftToRight
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            long realSum = 0L;
            for (int i = 0; i < n; i++)
            {
                long[] numbers = Console.ReadLine().Split(' ').Select(long.Parse).ToArray();
                long a = numbers[0];
                long b = numbers[1];
                if (a>b)
                {
                    for (int j = 1; j <= Math.Abs(numbers[0]); j++)
                    {
                        long numT = Math.Abs(a);
                        long sumT = 0L;
                        while (numT != 0)
                        {
                            sumT += Math.Abs(numT % 10);
                            numT = numT / 10;
                        }
                        realSum = sumT;
                    }
                }
                else
                {
                    for (int j = 1; j <= Math.Abs(numbers[1]); j++)
                    {
                        long numG = Math.Abs(b);
                        long sumG = 0L;
                        while (numG != 0)
                        {
                            sumG += Math.Abs(numG % 10);
                            numG = numG / 10;
                        }
                        realSum = sumG;
                    }
                }
                Console.WriteLine(Math.Abs(realSum));
                realSum = 0L;
            }
        }
    }
}