program main
  implicit none
  integer::a(3),b(3),i
  integer::adot(2),bdot(2)
  character*302::vera,verb
  character,parameter::dot='.'
  read *, vera
  read *, verb

  adot(1) = SCAN(vera,dot)
  adot(2) = SCAN(vera,dot,BACK=.true.)
  bdot(1) = SCAN(verb,dot)
  bdot(2) = SCAN(verb,dot,BACK=.true.)

  read(vera(        1:adot(1)-1),     *)a(1)
  read(vera(adot(1)+1:adot(2)-1) ,    *)a(2)
  read(vera(adot(2)+1:LEN_TRIM(vera)),*)a(3)
  read(verb(        1:bdot(1)-1),     *)b(1)
  read(verb(bdot(1)+1:bdot(2)-1),     *)b(2)
  read(verb(bdot(2)+1:LEN_TRIM(verb)),*)b(3)

  do i=1,3
     if(a(i).gt.b(i) ) then
        print '(a)',"YES"
        return
     else if(a(i).lt.b(i)) then
        print '(a)',"NO"
        return
     end if
  end do

  print '(a)',"YES"
end program main