coord = gets.chomp.split(//).map.inject([0, 0]){ |now, val|
          case val
          when 'N'
            now[1] += 1
          when 'E'
            now[0] += 1
          when 'W'
            now[0] -= 1
          when 'S'
            now[1] -= 1
          end
          now
        }
puts (coord[0] ** 2 + coord[1] ** 2) ** 0.5