#!/usr/bin/env tclsh8.6

set xmax 0
set ymax 0

while {[gets stdin line] >= 0} {
  switch -glob -- $line {
    "" {continue}
    *,* {
      lassign [split $line ,] x y
      set grid($x,$y) x
      if {$x > $xmax} {set xmax $x}
      if {$y > $ymax} {set ymax $y}
    }
    fold\ along\ x* {
      lassign [split $line =] _ xfold
      for {set dx 1} {$xfold + $dx <= $xmax} {incr dx} {
        set x [expr {$xfold + $dx}]
	set xto [expr {$xfold - $dx}]
	for {set y 0} {$y <= $ymax} {incr y} {
	  if {! [info exists grid($x,$y)]} continue
	  set grid($xto,$y) x
	  unset grid($x,$y)
	}
      }
      break
    }
    fold\ along\ y* {
      lassign [split $line =] _ yfold
      for {set dy 1} {$yfold + $dy <= $ymax} {incr dy} {
        set y [expr {$yfold + $dy}]
	set yto [expr {$yfold - $dy}]
	for {set x 0} {$x <= $xmax} {incr x} {
	  if {! [info exists grid($x,$y)]} continue
	  set grid($x,$yto) x
	  unset grid($x,$y)
	}
      }
      break
    }
  }
}
puts [array size grid]