import math, sequtils, strutils
let
  a: seq[int] = stdin.readline.split.map(parseInt)
  b: seq[string] = @[$(abs(a[0])), $(abs(a[1]))]
  c: seq[int] = @[b[0].count('0'), b[1].count('0')]
var
  prod: int = a[0] * a[1]
  ans: string
if b[0].len == c[0] + 1 and c[0] > 1 and b[1].len == c[1] + 1 and c[1] > 1:
  prod = prod div 10
  ans = $(prod)
else:
  if abs(prod) >= 10 ^ 8:
    ans ="E"
  else:
    ans = $(prod)
echo ans