from lib import get_data
from lib import Grid2D

data = get_data(__file__)


DIRS = [
    (-1, 0),
    (0, 1),
    (1, 0),
    (0, -1),
]

g = Grid2D(data)

t = 0
for rr in range(g.n_rows):
    for cc in range(g.n_cols):
        (p,), dir = g.find("^"), 0
        seen = set()
        loop = False

        if g[(rr, cc)] == "#":
            continue

        if g[(rr, cc)] != "^":
            g[(rr, cc)] = "#"

        while True:
            if (p, dir) in seen:
                loop = True
                break
            seen.add((p, dir))
            r, c = p[0] + DIRS[dir][0], p[1] + DIRS[dir][1]
            if not (0 <= r < g.n_rows and 0 <= c < g.n_cols):
                break

            if g[(r, c)] == "#":
                dir = (dir + 1) % 4
            else:
                p = (r, c)

        if g[(rr, cc)] == "^":
            print(len(set(pos for pos, _ in seen)))
        else:
            g[(rr, cc)] = "."

        if loop:
            t += 1

print(t)