(in-package :cl-user)
(eval-when (:compile-toplevel :load-toplevel :execute)
  (defparameter *opt*
    #+swank '(optimize (speed 3) (safety 2))
    #-swank '(optimize (speed 3) (safety 0) (debug 0)))
  #+swank (ql:quickload '(:cl-debug-print :fiveam :cp/util) :silent t)
  #+swank (use-package :cp/util :cl-user)
  #-swank (set-dispatch-macro-character
           #\# #\> (lambda (s c p) (declare (ignore c p)) `(values ,(read s nil nil t)))))
#+swank (set-dispatch-macro-character #\# #\> #'cl-debug-print:debug-print-reader)

(macrolet ((def (b)
             `(progn (deftype ,(intern (format nil "UINT~A" b)) () '(unsigned-byte ,b))
                     (deftype ,(intern (format nil "INT~A" b)) () '(signed-byte ,b))))
           (define-int-types (&rest bits) `(progn ,@(mapcar (lambda (b) `(def ,b)) bits))))
  (define-int-types 2 4 7 8 15 16 31 32 62 63 64))

(defconstant +mod+ 1000000007)

(defmacro dbg (&rest forms)
  #+swank (if (= (length forms) 1)
              `(format *error-output* "~A => ~A~%" ',(car forms) ,(car forms))
              `(format *error-output* "~A => ~A~%" ',forms `(,,@forms)))
  #-swank (declare (ignore forms)))

(declaim (inline println))
(defun println (obj &optional (stream *standard-output*))
  (let ((*read-default-float-format*
          (if (typep obj 'double-float) 'double-float *read-default-float-format*)))
    (prog1 (princ obj stream) (terpri stream))))

;; BEGIN_INSERTED_CONTENTS
;;; from UIOP
;;; Copyright (c) 2001-2019 Daniel Barlow and contributors
;;;
;;; Permission is hereby granted, free of charge, to any person obtaining
;;; a copy of this software and associated documentation files (the
;;; "Software"), to deal in the Software without restriction, including
;;; without limitation the rights to use, copy, modify, merge, publish,
;;; distribute, sublicense, and/or sell copies of the Software, and to
;;; permit persons to whom the Software is furnished to do so, subject to
;;; the following conditions:
;;;
;;; The above copyright notice and this permission notice shall be
;;; included in all copies or substantial portions of the Software.
;;;
;;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
;;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
;;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
;;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
;;; LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
;;; OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
;;; WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

(defpackage :cp/split-string
  (:use :cl)
  (:export #:split-string))
(in-package :cp/split-string)

(declaim (inline split-string))
(defun split-string (string &key max (separator '(#\Space #\Tab)))
  (declare (string string))
  (block ()
    (let ((list nil)
          (words 0)
          (end (length string)))
      (declare ((integer 0 #.most-positive-fixnum) words end))
      (when (zerop end) (return nil))
      (flet ((separatorp (char) (find char separator))
             (done () (return (cons (subseq string 0 end) list))))
        (loop
          :for start = (if (and max (>= words (1- max)))
                           (done)
                           (position-if #'separatorp string :end end :from-end t))
          :do (when (null start) (done))
              (push (subseq string (1+ start) end) list)
              (incf words)
              (setf end start))))))

(defpackage :cp/dictionary-order
  (:use :cl)
  (:export #:dict< #:dict<=))
(in-package :cp/dictionary-order)

;; based on UIOP:LEXICOGRAPHIC<
(declaim (inline dict<))
(defun dict< (element< x y)
  "Lexicographically compare two sequences using the function element< to
compare elements. element< is a strict total order; the resulting order on X and
Y will also be strict."
  (etypecase x
    (list
     (check-type y list)
     (labels ((recur (x y)
                (cond ((null y) nil)
                      ((null x) t)
                      ((funcall element< (car x) (car y)) t)
                      ((funcall element< (car y) (car x)) nil)
                      (t (recur (cdr x) (cdr y))))))
       (recur x y)))
    (vector
     (check-type y vector)
     (let ((xlen (length x))
           (ylen (length y)))
       (labels ((recur (i j)
                  (declare ((integer 0 #.most-positive-fixnum) i j))
                  (cond ((= j ylen) nil)
                        ((= i xlen) t)
                        ((funcall element< (aref x i) (aref y i)) t)
                        ((funcall element< (aref y i) (aref x i)) nil)
                        (t (recur (+ i 1) (+ j 1))))))
         (recur 0 0))))))

(declaim (inline dict<=))
(defun dict<= (element< x y)
  (or (dict< element< x y)
      (not (dict< element< y x))))

;; BEGIN_USE_PACKAGE
(eval-when (:compile-toplevel :load-toplevel :execute)
  (use-package :cp/dictionary-order :cl-user))
(eval-when (:compile-toplevel :load-toplevel :execute)
  (use-package :cp/split-string :cl-user))
(in-package :cl-user)

;;;
;;; Body
;;;

(defun main ()
  (let ((abc0 (mapcar #'read-from-string (split-string (read-line) :separator '(#\.))))
        (abc1 (mapcar #'read-from-string (split-string (read-line) :separator '(#\.)))))
    (write-line (if (dict<= #'< abc1 abc0)
                    "YES"
                    "NO"))))

#-swank (main)

;;;
;;; Test and benchmark
;;;

#+swank
(progn
  (defparameter *lisp-file-pathname* (uiop:current-lisp-file-pathname))
  (setq *default-pathname-defaults* (uiop:pathname-directory-pathname *lisp-file-pathname*))
  (uiop:chdir *default-pathname-defaults*)
  (defparameter *dat-pathname* (uiop:merge-pathnames* "test.dat" *lisp-file-pathname*))
  (defparameter *problem-url* "https://yukicoder.me/problems/no/138"))

#+swank
(defun gen-dat ()
  (uiop:with-output-file (out *dat-pathname* :if-exists :supersede)
    (format out "")))

#+swank
(defun bench (&optional (out (make-broadcast-stream)))
  (time (run *dat-pathname* out)))

#+(and sbcl (not swank))
(eval-when (:compile-toplevel)
  (when (or (> sb-c::*compiler-warning-count* 0)
            sb-c::*undefined-warnings*)
    (error "count: ~D, undefined warnings: ~A"
           sb-c::*compiler-warning-count*
           sb-c::*undefined-warnings*)))

;; To run: (5am:run! :sample)
#+swank
(5am:test :sample
  (5am:is
   (equal "YES
"
          (run "4.8.1
4.8.0
" nil)))
  (5am:is
   (equal "NO
"
          (run "0.0.0
1.1.1
" nil)))
  (5am:is
   (equal "NO
"
          (run "1.2.3
3.2.1
" nil))))