with open("./input", "r") as f:
    instructions = list(f.read())
cursor1 = [0,0]
cursor2 = [0,0]
houses = []
turn = 0
# turn 0 is santa, turn 1 is robosanta
for instruction in instructions:
    if turn == 0:
        if instruction == "^":
            cursor1[0] += 1
        if instruction == "v":
            cursor1[0] -= 1
        if instruction == ">":
            cursor1[1] += 1
        if instruction == "<":
            cursor1[1] -= 1
        houses.append(f"{cursor1[0]},{cursor1[1]};")
        print("(*)" + str(cursor1))
        turn = 1
    else:
        if instruction == "^":
            cursor2[0] += 1
        if instruction == "v":
            cursor2[0] -= 1
        if instruction == ">":
            cursor2[1] += 1
        if instruction == "<":
            cursor2[1] -= 1
        print("(-) " + str(cursor2))
        houses.append(f"{cursor2[0]},{cursor2[1]};")
        turn = 0
print(len(set(houses)))