def dial(action, start_position):
    if action[0] == "R":
        position = start_position + action[1]
    else:
        position = start_position - action[1]

    # Count rotations over "0" (multiples of 100)
    zeros = int(abs(position) / 100)

    # Negative position, or exactly "0", caused one extra "0" hit
    # Except when starting at 0!
    if position <= 0 and start_position != 0:
        zeros += 1

    position = position % 100

    return position, zeros

def read_input(filename):
    actions = []
    for line in open(filename):
        line = line.strip()

        direction = line[:1]
        steps = int(line[1:])
        actions.append((direction,steps))
    return actions


# filename = "day01/my_example_input"
# filename = "day01/example_input" # Output is 6
filename = "day01/input" # Output is 6133
actions = read_input(filename)

position = 50
password = 0

for action in actions:
    position, zeros = dial(action, position)
    password += zeros

print(f"Password is {password}")