import sequtils, strutils

let
  ab = stdin.readLine.split
  a = ab[0]
  b = ab[1]
  len = max(a.len, b.len)
  za = a.align(len, '0')
  zb = b.align(len, '0')
  bool = (0 ..< len).allIt(za[it] >= zb[it])

echo:
  if bool: "Yes"
  else: "No"