f = open('input.txt')
lines = [l.strip() for l in f.readlines()]

grid = []
was = {}
pos = (0, 0)
dirs = [(0, -1), (1, 0), (0, 1), (-1, 0)]
for l in lines:
    if '^' in l:
        pos = (l.index('^'), len(grid))
        l = l.replace('^', '.')
    grid.append(l)

def plus(pos1, d):
    return (pos1[0] + d[0], pos1[1] + d[1])

def is_valid_pos(grid, pos):
    return 0 <= pos[0] < len(grid[0]) and 0 <= pos[1] < len(grid)

def can_go(grid, pos, d):
    npos = plus(pos, d)
    return is_valid_pos(grid, npos) and grid[npos[1]][npos[0]] != '#'

def will_cycle(gr, pos, d, sd, was):
    global dirs, directions
    p = pos
    nwas = {}
    starti = dirs.index(d)
    obs = plus(pos, sd)
    grid = gr.copy()
    grid[obs[1]] = grid[obs[1]][:obs[0]] + '#' + grid[obs[1]][obs[0] + 1:]
    while is_valid_pos(grid, p):
        for j in range(starti, len(dirs)):
            dir = dirs[j]
            while can_go(grid, p, dir):
                p = plus(p, dir)
                if (p in nwas.keys() and dir in nwas[p]) or(p in was.keys() and dir in was[p]):
                    return obs
                if p not in nwas.keys():
                    nwas[p] = []
                if dir not in nwas[p]:
                    nwas[p].append(dir)
            if not is_valid_pos(grid, plus(p, dir)):
                p = plus(p, dir)
                break
        starti = 0
    return 0

steps = 0
s = 0
was[pos] = [dirs[0]]
was_obs = []
START = pos
while is_valid_pos(grid, pos):
    for i in range(len(dirs)):
        d = dirs[i]
        while can_go(grid, pos, d):
            if can_go(grid, pos, d) and plus(pos, d) != START:
                nextd = dirs[(i + 1) % len(dirs)]
                will = will_cycle(grid, pos, nextd, d, dict(was))
                if will not in was_obs and will != 0:
                    was_obs.append(will)
            pos = plus(pos, d)
            if pos not in was.keys():
                was[pos] = []
            was[pos].append(d)

        if not is_valid_pos(grid, plus(pos, d)):
            pos = plus(pos, d)
            break

print(len(was_obs))