import re

x = input().split()

def true_or_false (lst):
    regex = r"[1-9]"
    pattern = re.compile(regex)
    for ls in lst:
        if (ls[0]) == '-':
            if pattern.match(ls[2:]):
                return True
        else:
            if pattern.match(ls[1:]):
                return True
    return False
    
if true_or_false(x):
    ans = int(x[0]) * int(x[1])
    if -99999999 <= ans <= 99999999:
        print(ans)
    else:
        print("E")
else:
    print(int(x[0]) * int(x[1]) / 10)