with open("input") as f:
    puzzle_input = f.read()

# puzzle_input = "^v^v^v^v^v"

coords = (0, 0)
delivered_houses = set()
delivered_houses.add(coords)

MOVEMENTS = {">": (1, 0), "^": (0, 1), "<": (-1, 0), "v": (0, -1)}

SANTA_MOVES = puzzle_input[::2]
ROBO_MOVES = puzzle_input[1::2]

for char in SANTA_MOVES:
    [d_x, d_y] = MOVEMENTS[char]
    coords = (coords[0] + d_x, coords[1] + d_y)
    delivered_houses.add(coords)

coords = (0, 0)

for char in ROBO_MOVES:
    [d_x, d_y] = MOVEMENTS[char]
    coords = (coords[0] + d_x, coords[1] + d_y)
    delivered_houses.add(coords)

print(len(delivered_houses))