#!/usr/bin/env ruby

def turn_left(vector)
  return case vector
  when [1, 0]
    [0, 1]
  when [0, 1]
    [-1, 0]
  when [-1, 0]
    [0, -1]
  when [0, -1]
    [1, 0]
  end
end

def turn_right(vector)
  return case vector
  when [1, 0]
    [0, -1]
  when [0, -1]
    [-1, 0]
  when [-1, 0]
    [0, 1]
  when [0, 1]
    [1, 0]
  end
end

def turn(map, vector, row, col)
  lvec = turn_left(vector)
  rvec = turn_right(vector)

  lrow = row + lvec[0]
  lcol = col + lvec[1]

  rrow = row + rvec[0]
  rcol = col + rvec[1]

  if map[lrow][lcol] == ' ' then
    return rvec
  else
    return lvec
  end
end

input = $stdin.readlines.map(&:chomp).map(&:chars).map(&:to_a)

row = 0
col = input[0].index('|')
vec = [1, 0]
steps = 0

loop do
  row += vec[0]
  col += vec[1]
  steps += 1
  this = input[row][col]
  if this == ' ' then
    break
  elsif this == '+' then
    vec = turn(input, vec, row, col)
  end
end

puts steps