def out_of_range?(n)
    !n.between?(-99999999, 99999999)
end

def do_mental_arithmetic(a,b)
    if a.to_s =~ /\A(-?[1-9])(0{2,})\z/
        h1, t1 = $1, $2
    else
        return nil
    end
    if b.to_s =~ /\A(-?[1-9])(0{2,})\z/
        h2, t2 = $1, $2
    else
        return nil
    end
    return "#{h1.to_i*h2.to_i}#{(t1+t2)[1..-1]}".to_i
end

a, b = gets.split.map(&:to_i)
if r = do_mental_arithmetic(a, b)
    puts r
else
    r = a * b
    if out_of_range?(r)
        puts "E"
    else
        puts r
    end
end