import re
A,B=map(int,input().split())
S=re.compile(r'^-?[1-9]0{2,}$')
if S.findall(str(A))!=[] and S.findall(str(B))!=[]:
    print(int((A*B)*0.1))
elif len(str(A*B))<=8:
    print(A*B)
else:
    print("E")