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

str_a = str(abs(a))
str_b = str(abs(b))

if abs(a)>99 and abs(b)>99 and len(str_a)-str_a.count("0")==1 and len(str_b)-str_b.count("0")==1:
    print(str(a*b)[:-1])
else:
    ans = a*b
    if ans<-99999999 or ans>99999999:
        print("E")
    else:
        print(ans)