from lib import get_data, add2


DIRS = {"R": (0, 1), "U": (-1, 0), "D": (1, 0), "L": (0, -1)}


def part_1(data):
    xss = []
    for path in data.splitlines():
        xs = [(0, 0)]
        for word in path.split(","):
            dir = DIRS[word[0]]
            x = int(word[1:])
            for _ in range(x):
                xs.append(add2(xs[-1], dir))
        xss.append(xs)
    ys = set(xss[0]) & set(xss[1])
    ys.remove((0, 0))
    min_dist = 10**9
    for y in ys:
        d = abs(y[0]) + abs(y[1])
        min_dist = min(min_dist, d)
    print(min_dist)


def part_2(data):
    xss = []
    for path in data.splitlines():
        pos = (0, 0)
        steps = 0
        xs = {}
        for word in path.split(","):
            dir = DIRS[word[0]]
            x = int(word[1:])
            for _ in range(x):
                steps += 1
                pos = add2(pos, dir)
                if not pos in xs:
                    xs[pos] = steps
        xss.append(xs)

    min_steps = 10**9
    for x in xss[0].keys():
        if x in xss[1]:
            steps = xss[0][x] + xss[1][x]
            min_steps = min(steps, min_steps)
    print(min_steps)


def main():
    data = get_data(__file__)
    part_1(data)
    part_2(data)


if __name__ == "__main__":
    main()