a, b = map(int, input().split())

#under 100
if -100 < a < 100 or -100 < b < 100:
    print(a*b)

#over 100 and 100
else:
    if a*b > 0:
        f = 1
    else:
        f = -1

    _a = abs(a)
    _b = abs(b)

    if _a % 10**(len(str(_a))-1) == 0 and _b % 10**(len(str(_b))-1) == 0:
        ans = int(f*_a*_b/10)
    else:
        ans = int(f*_a*_b)
        if abs(ans) > 99999999:
            ans = "E"
    print(ans)