import re
a,b=map(int,input().split())
if re.fullmatch(r'^-?[1-9]0{2,}$',str(a)) and re.fullmatch(r'^-?[1-9]0{2,}$',str(b)):
    print(str(a*b)[:-1])
else:
    t=a*b
    if -99999999<=t<=99999999:
        print(t)
    else:
        print('E')