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