def judge(x)
    cnt = 0
    while x % 10 == 0
        x /= 10
        cnt += 1
    end
    if x / 10 > 0
        return false
    end
    if x == 0
        return false
    end
    return cnt >= 2
end

a, b = gets.split.map(&:to_i)
if judge(a.abs) && judge(b.abs)
    p a * b / 10
else
    ans = a * b
    puts (ans <= -100000000 || ans >= 100000000) ? "E" : ans
end