A, B = map(str, input().split())
a = int(A)
b = int(B)

if A[-2:] == B[-2:] == '00' and ('0' not in A[2:] or '0' not in B[2:]):
    print(a * b // 10)
else:
    print(['E', a*b][-99999999 <= a*b <= 99999999])