a, b = input().split()


def is_e(s):
    if s[0] == "-":
        return s[2:] == "0" * (len(s) - 2) and 2 <= (len(s) - 2)
    else:
        return s[1:] == "0" * (len(s) - 1) and 2 <= (len(s) - 1)


if is_e(a) and is_e(b):
    print(int(a) * int(b) // 10)
else:
    a, b = map(int, [a, b])
    print(a * b if -(10**8) < a * b < 10**8 else "E")