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

if a % 100 == 0 and b % 100 == 0 and str(abs(a))[1] == '0' and str(abs(b))[1] == '0':
    print(int(ans/ 10))
else:
    if abs(ans) > 99999999:
        print('E')
    else:
        print(ans)