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

namespace YukiCoder
{
    class Program
    {
        static void Main(string[] args)
        {
            var va = Console.ReadLine().Split();
            var n0 = long.Parse(va[0]);
            var n1 = long.Parse(va[1]);
            var c0 = va[0].Count(n => n > '0' && n <= '9');
            var c1 = va[1].Count(n => n > '0' && n <= '9');
            var nn = n0 * n1;
            if (c0 == 1 && c1 == 1 && n0 > 99 && n1 > 99) Console.WriteLine(n0 * n1 / 10);
            else Console.WriteLine(nn >= -99999999 && nn <= 99999999 ? nn.ToString() : "E");
            Console.ReadLine();
        }
    }
}