import strutils, sequtils, math

let
  tmp = map(split readLine stdin, parseInt)
  (A, B) = (tmp[0], tmp[1])

proc judge(n: int): bool =
  let str = $(n.abs)
  count(str, "0") == len(str) - 1

if A.judge and B.judge:
  echo A * B div 10
elif abs(A * B) >= 10 ^ 8:
  echo 'E'
else:
  echo A * B