#!/usr/bin/env python3

import sys

input_file = sys.argv[1]

with open(input_file) as fd:
    lines = [line.rstrip() for line in fd.readlines()]

height = len(lines)
width = len(lines[0])

for i in range(height):
    if "^" in lines[i]:
        j = lines[i].index("^")
        break

d = 0
directions = [
    (-1, 0),  # ^
    (0, 1),  # >
    (1, 0),  # v
    (0, -1),  # <
]

vis = [[False] * width for h in range(height)]

while True:
    print(i, j)
    vis[i][j] = True
    ii, jj = i + directions[d][0], j + directions[d][1]
    if ii not in range(height) or jj not in range(width):
        break
    if lines[ii][jj] == "#":
        d += 1
        d %= len(directions)
        continue
    i, j = ii, jj

count = 0
for i in range(height):
    for j in range(width):
        if vis[i][j]:
            count += 1
print(count)