Submission #6041862

---

Source Code Expand

program palindrome_phobia
  implicit none
  character(100) :: s
  integer :: h, w, n(26), i, j, g(3)
  read(*,*) h, w
  n = 0
  do i = 1, h
    read(*,*) s
    s = trim(adjustl(s))
    do j = 1, w
      n(ichar(s(j:j))-96) = n(ichar(s(j:j))-96)+1
    end do
  end do
  g(1) = mod(h,2)*mod(w,2)
  g(2) = mod(w,2)*(h/2)+mod(h,2)*(w/2)
  g(3) = (h/2)*(w/2)
  do i = 1, g(1)
    do j = 1, 26
      if (mod(n(j),2).eq.1) then
        n(j) = n(j)-1
        exit
      end if
    end do
  end do
  do i = 1, g(2)
    do j = 1, 26
      if (mod(n(j),4).eq.2) then
        n(j) = n(j)-2
        exit
      end if
    end do
  end do
  do i = 1, g(3)
    do j = 1, 26
      if (n(j).eq.0) cycle
      if (mod(n(j),4).eq.0) then
        n(j) = n(j)-4
        exit
      end if
    end do
  end do
  if (sum(n).eq.0) then
    write(*,'(a)') "Yes"
  else
    write(*,'(a)') "No"
  end if
  stop
end program palindrome_phobia

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