solutions.py

from helpers import *
import math
import itertools
from queue import Queue
from threading import Thread
import math

get = safe_list_get

############
# puzzle 1 #
############
## 1 ##
def puzzle1():
  with open('d1_input.txt', 'r') as f: values = [int(v.strip()) for v in f.readlines()]
  calc_fuel = lambda v: math.floor(v/3)-2
  fuel_total = sum([calc_fuel(val) for val in values])
  print(f"Puzzle 1: {fuel_total=}")

## 1.5 ##
def puzzle15():
  with open('d1_input.txt', 'r') as f: values = [int(v.strip()) for v in f.readlines()]
  calc_fuel = lambda v: math.floor(v/3)-2
  fuel_total = 0
  for val in values:
    while (val := calc_fuel(val)) > 0: fuel_total += val
  print(f"Puzzle 1.5: {fuel_total=}")

############
# puzzle 2 #
############
## 2 ##
def puzzle2():
  with open('d2_input.txt', 'r') as f: values = [int(v) for v in f.readlines()[0].strip().split(',')]
  values[1] = 12; values[2] = 2 # manual modifications
  for ptr in range(0, len(values), 4):
    if   values[ptr] == 99: break
    elif values[ptr] == 1: values[values[ptr+3]] = values[values[ptr+1]] + values[values[ptr+2]]
    elif values[ptr] == 2: values[values[ptr+3]] = values[values[ptr+1]] * values[values[ptr+2]]
  print(f"Puzzle 2: {values[0]=}") # ','.join([str(v) for v in values])

## 2.5 ##
def puzzle25():
  for noun, verb in itertools.product(range(0, 100), range(0, 100)):
    with open('d2_input.txt', 'r') as f: values = [int(v) for v in f.readlines()[0].strip().split(',')]
    values[1] = noun; values[2] = verb # modifications
    for ptr in range(0, len(values), 4):
      if   values[ptr] == 99: break
      elif values[ptr] == 1: values[values[ptr+3]] = values[values[ptr+1]] + values[values[ptr+2]]
      elif values[ptr] == 2: values[values[ptr+3]] = values[values[ptr+1]] * values[values[ptr+2]]
    if values[0] == 19690720: return print(f"Puzzle 2.5: (100 * noun + verb)= {100 * noun + verb}")

############
# puzzle 3 #
############
## 3 ##
def puzzle3():
  with open('d3_input.txt', 'r') as f: w1, w2 = map(lambda x: x.strip().split(','), f.readlines())
  w1_locs = []; w2_locs = []
  for w, locs in ((w1, w1_locs), (w2, w2_locs)):
    w_pos = [0,0]
    for path in w:
      start_pos = w_pos[:]
      if   path[0] == 'U': w_pos[1] += int(path[1:])
      elif path[0] == 'D': w_pos[1] -= int(path[1:])
      elif path[0] == 'L': w_pos[0] -= int(path[1:])
      elif path[0] == 'R': w_pos[0] += int(path[1:])
      locs.append([tuple(start_pos), tuple(w_pos)])
  w_overlaps = [tuple(pt) for line1 in w1_locs for line2 in w2_locs if (pt := (line_intersection(line1, line2) or [0,0])) != [0,0]]
  w_manhattan = sorted([manhattan((0,0), pt) for pt in set(w_overlaps)])
  print(f"Puzzle 3: Shortest manhattan is {w_manhattan[0]}")

## 3.5 ##
def puzzle35():
  with open('d3_input.txt', 'r') as f: w1, w2 = map(lambda x: x.strip().split(','), f.readlines())
  w1_locs = []; w2_locs = []
  for w, locs in ((w1, w1_locs), (w2, w2_locs)):
    w_pos = [0,0]
    step_count = 0
    for path in w:
      start_pos = w_pos[:]
      val = int(path[1:])
      if   path[0] == 'U': w_pos[1] += val
      elif path[0] == 'D': w_pos[1] -= val
      elif path[0] == 'L': w_pos[0] -= val
      elif path[0] == 'R': w_pos[0] += val
      locs.append({'start': tuple(start_pos), 'end': tuple(w_pos), 'steps': step_count, 'dir': path[0]})
      step_count += val

  # LONG
  # w_overlaps = []
  # for line1 in w1_locs:
  #   for line2 in w2_locs:
  #     if (pt or [0,0]) == [0,0]: continue # skip
  #     if   line1['dir'] in ('U','D'): l1_dtoi = abs(line1['start'][1] - pt[1])
  #     elif line1['dir'] in ('L','R'): l1_dtoi = abs(line1['start'][0] - pt[0])
  #     if   line2['dir'] in ('U','D'): l2_dtoi = abs(line2['start'][1] - pt[1])
  #     elif line2['dir'] in ('L','R'): l2_dtoi = abs(line2['start'][0] - pt[0])
  #     total_steps = line1['steps'] + line2['steps'] + l1_dtoi + l2_dtoi
  #     w_overlaps.append(total_steps)

  # Comprehension
  w_overlaps = sorted(list(set([sum([abs((line['start'][1] - pt[1]) if line['dir'] in ('U','D') else (line['start'][0] - pt[0])) + line['steps'] for line in (line1, line2)]) for line1, line2 in itertools.product(w1_locs, w2_locs) if ((pt := line_intersection((line1['start'], line1['end']), (line2['start'], line2['end']))) or [0,0] != [0,0])])))

  # Comprehension (expanded)
  # w_overlaps = sorted(list(set(
  #   [
  #     sum([
  #       line['steps'] + abs((
  #         line['start'][1] - pt[1])
  #         if line['dir'] in ('U','D') else (
  #         line['start'][0] - pt[0])
  #       )
  #       for line in (line1, line2)
  #     ])
  #     for line1, line2 in itertools.product(w1_locs, w2_locs)
  #     if (
  #         pt := line_intersection((line1['start'], line1['end']), (line2['start'], line2['end'])))
  #         or [0,0]
  #       != [0,0]
  #   ]
  # )))
  print(f"Puzzle 3.5: Fewest steps is {w_overlaps[0]}")

############
# puzzle 4 #
############
## 4 ##
def puzzle4():
  d4_input = range(235741, 706948+1)
  def is_valid_4(val):
    val = [int(d) for d in str(val)]
    for idx in range(0, 5): # digits LR check
      if val[idx+1] < val[idx]: return False
    for idx in range(0, 5): # adjacent matching digits check
      if val[idx] == val[idx+1]: return True
    return False
  count = sum([1 for val in d4_input if is_valid_4(val)])
  print(f"Puzzle 4: Total possible passwords: {count}")

## 4.5 ##
def puzzle45():
  d4_input = range(235741, 706948+1)
  def is_valid_45(val):
    val = [int(d) for d in str(val)]
    for idx in range(0, 5): # digits LR check
      if val[idx+1] < val[idx]: return False
    for idx in range(0, 5):
      if (get(val, idx-1, val[idx+1]) != get(val, idx+0, get(val, idx+2, val[idx-1])) and
          get(val, idx+0, val[idx+0]) == get(val, idx+1, val[idx+0]) and
          get(val, idx+1, val[idx+0]) != get(val, idx+2, val[idx-1])): return True
    return False
  count = sum([1 for val in d4_input if is_valid_45(val)])
  print(f"Puzzle 4.5: Total possible passwords: {count}")

############
# puzzle 5 #
############
## 5 ##
def puzzle5():
  with open('d5_input.txt', 'r') as f: values = [int(v) for v in f.readlines()[0].strip().split(',')]
  get_param = lambda idx: values[values[ptr+idx]] if get(modes, idx-1, 0) == 0 else values[ptr+idx]
  def update_value(idx, value): v_idx = values[ptr+idx] if get(modes, idx-1, 0) == 0 else ptr+idx; values[v_idx] = value
  ptr = 0
  output = []
  while ptr < len(values):
    modes = [int(c) for c in str(values[ptr])[:-2]][::-1] # all leftmost digits (right-to-left) # rightmost is last param
    opcode = int(str(values[ptr])[-2:])                   # two rightmost digits
    if   opcode == 99: break
    elif opcode == 1: update_value(3, get_param(1) + get_param(2)); ptr += 4
    elif opcode == 2: update_value(3, get_param(1) * get_param(2)); ptr += 4
    elif opcode == 3: update_value(1, int(input("Input (P5): ")));  ptr += 2
    elif opcode == 4: output.append(get_param(1)); ptr += 2
  print("Puzzle 5: {}".format(f'All tests passed! Output: {output[-1]}' if not any(output[:-1]) else f'Tests failed: {output=}'))

## 5.5 ##
def puzzle55():
  with open('d5_input.txt', 'r') as f: values = [int(v) for v in f.readlines()[0].strip().split(',')]
  vpos = lambda m_idx: values[ptr+m_idx] if get(modes, m_idx-1, 0) == 0 else ptr+m_idx # given a mode index, calculate the proper position for indexing into values
  ptr = 0
  while ptr < len(values):
    modes = [int(c) for c in str(values[ptr])[:-2]][::-1]   # all leftmost digits (right-to-left) # rightmost is last param
    if  (opcode := int(str(values[ptr])[-2:])) == 99: break # two rightmost digits
    elif opcode == 1: values[vpos(3)] = values[vpos(1)] + values[vpos(2)]; ptr += 4
    elif opcode == 2: values[vpos(3)] = values[vpos(1)] * values[vpos(2)]; ptr += 4
    elif opcode == 3: values[vpos(1)] = int(input("Input (P5.5): ")); ptr += 2
    elif opcode == 4: output = values[vpos(1)]; ptr += 2
    elif opcode == 5: ptr = values[vpos(2)] if values[vpos(1)] != 0 else ptr+3
    elif opcode == 6: ptr = values[vpos(2)] if values[vpos(1)] == 0 else ptr+3
    elif opcode == 7: values[values[ptr+3]] = int(values[vpos(1)] <  values[vpos(2)]); ptr += 4
    elif opcode == 8: values[values[ptr+3]] = int(values[vpos(1)] == values[vpos(2)]); ptr += 4
  print(f"Puzzle 5.5: Intcode output: {output}")

############
# puzzle 6 #
############
## 6 ##
def puzzle6():
  with open('d6_input.txt', 'r') as f: orbits = [l.strip() for l in f.readlines()]
  def count(tree, num_levels_down=0): return sum([num_levels_down+count(planets_in_orbit, num_levels_down+1) for center, planets_in_orbit in tree.items()])
  # def count(tree, num_levels_down=0):
  #   return sum([
  #     num_levels_down+count(planets_in_orbit, num_levels_down+1)
  #     for center, planets_in_orbit in tree.items()
  #   ])
  orbits = tuple(map(lambda o: o.split(')'), orbits))
  all_orbits = {center: {s: {} for s in [sat for c,sat in orbits if c == center]} for center,_ in orbits}
  # all_orbits = {
  #   center: {
  #     s: {}
  #     for s in [
  #       sat
  #       for c,sat in orbits
  #       if c == center
  #     ]
  #   }
  #   for center,_ in orbits
  # }
  for center, all_sats in all_orbits.items(): all_orbits[center].update({sat: all_orbits.get(sat, {}) for sat in all_sats.keys()})
  # for center, all_sats in all_orbits.items():
  #   all_orbits[center].update(
  #     {
  #       sat: all_orbits.get(sat, {})
  #       for sat in all_sats.keys()
  #     }
  #   )
  total_orbits = count({'COM': all_orbits['COM']})
  print(f"Puzzle 6: Total direct+indirect orbits: {total_orbits}")

## 6.5 ##
def puzzle65():
  with open('d6_input.txt', 'r') as f: orbits = [l.strip() for l in f.readlines()]
  def count(tree, num_levels_down=0): return sum([num_levels_down+count(planets_in_orbit, num_levels_down+1) for center, planets_in_orbit in tree.items()])
  def depth_of_node(tree, key, level=0): return level if key in tree else sum([depth_of_node(t, key, level+1) for t in tree.values()])
  # def depth_of_node(tree, key, level=0):
  #   return level if key in tree else sum(
  #     [
  #       depth_of_node(t, key, level+1)
  #       for t in tree.values()
  #     ]
  #   )
  orbits = tuple(map(lambda o: o.split(')'), orbits))
  all_orbits = {center: {s: {} for s in [sat for c,sat in orbits if c == center]} for center,_ in orbits}
  for center, all_sats in all_orbits.items(): all_orbits[center].update({sat: all_orbits.get(sat, {}) for sat in all_sats.keys()})
  smallest_tree = tuple(min([{center: all_sats} for center, all_sats in all_orbits.items() if depth_of_node(all_sats, 'YOU') and depth_of_node(all_sats, 'SAN')], key=lambda p: count(p)).values())[0]
  # smallest_tree = tuple(
  #   min(
  #     [
  #       {center: all_sats}
  #       for center, all_sats in all_orbits.items()
  #       if depth_of_node(all_sats, 'YOU') and depth_of_node(all_sats, 'SAN')
  #     ], key=lambda p: count(p)
  #   ).values()
  # )[0]
  min_transfers = depth_of_node(smallest_tree, 'YOU') + depth_of_node(smallest_tree, 'SAN')
  print(f"Puzzle 6.5: Minimum orbital transfers: {min_transfers}")

############
# puzzle 7 #
############
## 7 ##
def puzzle7():
  def intcode(inputs): # two inputs expected
    with open('d7_input.txt', 'r') as f: values = [int(v) for v in f.readlines()[0].strip().split(',')]
    vpos = lambda m_idx: values[ptr+m_idx] if get(modes, m_idx-1, 0) == 0 else ptr+m_idx # given a mode index, calculate the proper position for indexing into values
    inputs = (x for x in inputs)
    ptr = 0
    while ptr < len(values):
      modes = [int(c) for c in str(values[ptr])[:-2]][::-1]   # all leftmost digits (right-to-left) # rightmost is last param
      if  (opcode := int(str(values[ptr])[-2:])) == 99: break # two rightmost digits
      elif opcode == 1: values[vpos(3)] = values[vpos(1)] + values[vpos(2)]; ptr += 4
      elif opcode == 2: values[vpos(3)] = values[vpos(1)] * values[vpos(2)]; ptr += 4
      elif opcode == 3: values[vpos(1)] = next(inputs); ptr += 2 # input signal
      elif opcode == 4: return values[vpos(1)]; ptr += 2
      elif opcode == 5: ptr = values[vpos(2)] if values[vpos(1)] != 0 else ptr+3
      elif opcode == 6: ptr = values[vpos(2)] if values[vpos(1)] == 0 else ptr+3
      elif opcode == 7: values[values[ptr+3]] = int(values[vpos(1)] <  values[vpos(2)]); ptr += 4
      elif opcode == 8: values[values[ptr+3]] = int(values[vpos(1)] == values[vpos(2)]); ptr += 4
  signals = {}
  for phase in itertools.permutations(range(5)):
    outA = intcode((phase[0], 0))
    outB = intcode((phase[1], outA))
    outC = intcode((phase[2], outB))
    outD = intcode((phase[3], outC))
    outE = intcode((phase[4], outD))
    signals["".join((str(n) for n in phase))] = outE
  print(f"Puzzle 7: Maximum thruster signal: {max(signals.values())}")

## 7.5 ##
def puzzle75():
  def intcode(input_queue, output_queue): # two inputs expected
    with open('d7_input.txt', 'r') as f: values = [int(v) for v in f.readlines()[0].strip().split(',')]
    vpos = lambda m_idx: values[ptr+m_idx] if get(modes, m_idx-1, 0) == 0 else ptr+m_idx # given a mode index, calculate the proper position for indexing into values
    ptr = 0
    while ptr < len(values):
      modes = [int(c) for c in str(values[ptr])[:-2]][::-1]   # all leftmost digits (right-to-left) # rightmost is last param
      if  (opcode := int(str(values[ptr])[-2:])) == 99: break # two rightmost digits
      elif opcode == 1: values[vpos(3)] = values[vpos(1)] + values[vpos(2)]; ptr += 4
      elif opcode == 2: values[vpos(3)] = values[vpos(1)] * values[vpos(2)]; ptr += 4
      elif opcode == 3: values[vpos(1)] = input_queue.get(); ptr += 2 # input signal
      elif opcode == 4: output_queue.put(values[vpos(1)]); ptr += 2
      elif opcode == 5: ptr = values[vpos(2)] if values[vpos(1)] != 0 else ptr+3
      elif opcode == 6: ptr = values[vpos(2)] if values[vpos(1)] == 0 else ptr+3
      elif opcode == 7: values[values[ptr+3]] = int(values[vpos(1)] <  values[vpos(2)]); ptr += 4
      elif opcode == 8: values[values[ptr+3]] = int(values[vpos(1)] == values[vpos(2)]); ptr += 4
  signals = {}
  for phase in itertools.permutations(range(5,10)):
    inToA = Queue(); inToA.put(phase[0]); inToA.put(0)
    inToB = Queue(); inToB.put(phase[1])
    inToC = Queue(); inToC.put(phase[2])
    inToD = Queue(); inToD.put(phase[3])
    inToE = Queue(); inToE.put(phase[4])
    threads = [Thread(target=intcode, args=args) for args in ((inToA, inToB), (inToB, inToC), (inToC, inToD), (inToD, inToE), (inToE, inToA))]
    for t in threads: t.start()
    for t in threads: t.join()
    signals["".join((str(n) for n in phase))] = inToA.get(timeout=3)
  print(f"Puzzle 7.5: Maximum feedback thruster signal: {max(signals.values())}")

############
# puzzle 8 #
############
## 8 ##
def puzzle8():
  with open('d8_input.txt', 'r') as f: values = [int(l) for l in f.readlines()[0].strip()]
  # image dims: 25px x 6px x NUM_LAYERS
  num_layers = int(len(values) / (25*6))
  pixel_sums_per_layer = []
  layers = [values[width*height*layer:width*height*(layer+1)] for layer in range(0, num_layers)]
  fewest_0s_layer = (0, 999) # idx, count
  for idx, layer in enumerate(layers):
    num_0s = 0
    for px in layer: num_0s += (1 if px == 0 else 0)
    if fewest_0s_layer[1] > num_0s: fewest_0s_layer = (idx, num_0s)
  num_ones = num_twos = 0
  for px in layers[fewest_0s_layer[0]]:
    if px == 1: num_ones += 1
    if px == 2: num_twos += 1
  print(f"Puzzle 8: 1s X 2s: {num_ones * num_twos}")

## 8.5 ##
def puzzle85():
  # image dims: 25px x 6px x NUM_LAYERS
  with open('d8_input.txt', 'r') as f: values = [int(l) for l in f.readlines()[0].strip()]
  width, height = (25, 6)
  num_layers = int(len(values) / (width*height))
  layers = [values[width*height*layer:width*height*(layer+1)] for layer in range(0, num_layers)]
  image = layers[0][:]
  for layer in layers[1:]:
    for idx, px in enumerate(layer):
      if image[idx] == 2: image[idx] = px # transparent -> replace
  image_out = [[] for _ in range(height)]
  for h,w in itertools.product(range(height), range(width)): image_out[h].append(image[(width*h)+w])
  image_out = ["".join('X' if p else '-' for p in image_out[h]) for h in range(height)]
  print("Puzzle 8.5: Image contents: \n{}".format('\n'.join(image_out)))

############
# puzzle 9 #
############
## 9 ##
def puzzle9():
  with open('d9_input.txt', 'r') as f: values = {idx: int(v) for idx,v in enumerate(f.readlines()[0].strip().split(','))}
  def vpos(m_idx): # given a mode index, calculate the proper position for indexing into values
    m = get(modes, m_idx-1, 0)
    if   m == 1: return ptr+m_idx                    # immediate mode
    elif m == 0: return values[ptr+m_idx]            # position mode
    elif m == 2: return values[ptr+m_idx] + rel_base # relative mode
  ptr = 0
  rel_base = 0
  output = []
  while ptr < len(values.keys()):
    modes = [int(c) for c in str(values[ptr])[:-2]][::-1]   # all leftmost digits (right-to-left) # rightmost is last param
    if  (opcode := int(str(values[ptr])[-2:])) == 99: break # two rightmost digits
    elif opcode == 1: values[vpos(3)] = values.setdefault(vpos(1), 0) + values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 2: values[vpos(3)] = values.setdefault(vpos(1), 0) * values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 3: values[vpos(1)] = int(input("Input (9): [1] ")); ptr += 2
    elif opcode == 4: output.append(values.setdefault(vpos(1), 0)); ptr += 2
    elif opcode == 5: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) != 0 else ptr+3
    elif opcode == 6: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) == 0 else ptr+3
    elif opcode == 7: values[vpos(3)] = int(values.setdefault(vpos(1), 0) <  values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 8: values[vpos(3)] = int(values.setdefault(vpos(1), 0) == values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 9: rel_base += values.setdefault(vpos(1), 0); ptr += 2
  print(f"Puzzle 9: Intcode output: {output}")

## 9.5 ##
def puzzle95():
  with open('d9_input.txt', 'r') as f: values = {idx: int(v) for idx,v in enumerate(f.readlines()[0].strip().split(','))}
  # given a mode index, calculate the proper position for indexing into values
  vpos = lambda m_idx:  ptr+m_idx if (m := get(modes, m_idx-1, 0)) == 1 else (values[ptr+m_idx] + (rel_base if m == 2 else 0))
  ptr = 0
  rel_base = 0
  output = []
  while ptr < len(values.keys()):
    modes = [int(c) for c in str(values[ptr])[:-2]][::-1]   # all leftmost digits (right-to-left) # rightmost is last param
    if  (opcode := int(str(values[ptr])[-2:])) == 99: break # two rightmost digits
    elif opcode == 1: values[vpos(3)] = values.setdefault(vpos(1), 0) + values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 2: values[vpos(3)] = values.setdefault(vpos(1), 0) * values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 3: values[vpos(1)] = int(input("Input (9.5): [2] ")); ptr += 2
    elif opcode == 4: output.append(values.setdefault(vpos(1), 0)); ptr += 2
    elif opcode == 5: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) != 0 else ptr+3
    elif opcode == 6: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) == 0 else ptr+3
    elif opcode == 7: values[vpos(3)] = int(values.setdefault(vpos(1), 0) <  values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 8: values[vpos(3)] = int(values.setdefault(vpos(1), 0) == values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 9: rel_base += values.setdefault(vpos(1), 0); ptr += 2
  print(f"Puzzle 9.5: Intcode output: {output}")

#############
# puzzle 10 #
#############
## 10 ##
def puzzle10():
  with open('d10_input.txt', 'r') as f: asteroids = [[p for p in v.strip()] for v in f.readlines()]
  is_asteroid = lambda v: v == '#'
  def can_see(origin, dest):
    oX, oY = origin
    destX, destY = dest
    stepX = (destX-oX)
    stepY = (destY-oY)
    divisor = math.gcd(stepX, stepY)
    minStepX = stepX/(1 if divisor == 0 else divisor)
    minStepY = stepY/(1 if divisor == 0 else divisor)
    for x,y in ((int(oX+(minStepX*step)), int(oY+(minStepY*step))) for step in range(len(asteroids[0]), 0, -1)):
      if y < 0 or x < 0 or y >= len(asteroids) or x >= len(asteroids[0]): continue
      if y == oY and x == oX: continue
      if y == destY and x == destX: return True
      if is_asteroid(asteroids[y][x]): return False
  ast_counts = {}
  for x,y in itertools.product(range(0, len(asteroids[0])), range(0, len(asteroids))):
    if not is_asteroid(asteroids[y][x]): continue
    ast_counts[f"{x}_{y}"] = sum(
      int(bool(
        not (dy == y and dx == x) and
        is_asteroid(asteroids[dy][dx]) and
        can_see((x,y),(dx,dy))))
      for dx,dy in itertools.product(range(0, len(asteroids[0])), range(0, len(asteroids))))
  print(f"Puzzle 10: Maximum detection from an asteroid: {max(ast_counts.values())}")

#############
# puzzle 11 #
#############
## 11 ##
def puzzle11():
  with open('d11_input.txt', 'r') as f: values = {idx: int(v) for idx,v in enumerate(f.readlines()[0].strip().split(','))}
  def vpos(m_idx): # given a mode index, calculate the proper position for indexing into values
    m = get(modes, m_idx-1, 0)
    if   m == 1: return ptr+m_idx                    # immediate mode
    elif m == 0: return values[ptr+m_idx]            # position mode
    elif m == 2: return values[ptr+m_idx] + rel_base # relative mode
  robot_plane = {}
  cur_position = [0,0]
  cur_direction = 0 # U/D/L/R 0/1/2/3
  cur_color = 0
  complete_directions = True # start true so first time is false
  ptr = 0
  rel_base = 0
  while ptr < len(values.keys()):
    modes = [int(c) for c in str(values[ptr])[:-2]][::-1]   # all leftmost digits (right-to-left) # rightmost is last param
    if  (opcode := int(str(values[ptr])[-2:])) == 99: break # two rightmost digits
    elif opcode == 1: values[vpos(3)] = values.setdefault(vpos(1), 0) + values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 2: values[vpos(3)] = values.setdefault(vpos(1), 0) * values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 3: values[vpos(1)] = robot_plane.setdefault(f"{cur_position[0]}_{cur_position[1]}", 0); ptr += 2 # first input is 0 (black panel)
    elif opcode == 4:
      complete_directions = not complete_directions
      if not complete_directions: cur_color = values.setdefault(vpos(1), 0) # default is black panel
      else:
        direction = values.setdefault(vpos(1), 0)
        robot_plane[f"{cur_position[0]}_{cur_position[1]}"] = cur_color
        if direction: # turn right 90
          if   cur_direction == 0: cur_direction = 3 # up -> right
          elif cur_direction == 1: cur_direction = 2 # down -> left
          elif cur_direction == 2: cur_direction = 0 # left -> up
          elif cur_direction == 3: cur_direction = 1 # right -> down
        else: # turn left 90
          if   cur_direction == 0: cur_direction = 2 # up -> left
          elif cur_direction == 1: cur_direction = 3 # down -> right
          elif cur_direction == 2: cur_direction = 1 # left -> down
          elif cur_direction == 3: cur_direction = 0 # right -> up
        if   cur_direction == 0: cur_position[1] += 1 # up 1
        elif cur_direction == 1: cur_position[1] -= 1 # down 1
        elif cur_direction == 2: cur_position[0] -= 1 # left 1
        elif cur_direction == 3: cur_position[0] += 1 # right 1
      ptr += 2
    elif opcode == 5: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) != 0 else ptr+3
    elif opcode == 6: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) == 0 else ptr+3
    elif opcode == 7: values[vpos(3)] = int(values.setdefault(vpos(1), 0) <  values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 8: values[vpos(3)] = int(values.setdefault(vpos(1), 0) == values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 9: rel_base += values.setdefault(vpos(1), 0); ptr += 2
  print(f"Puzzle 11: Number of panels painted: {len(robot_plane.keys())}")

## 11.5 ##
def puzzle115():
  with open('d11_input.txt', 'r') as f: values = {idx: int(v) for idx,v in enumerate(f.readlines()[0].strip().split(','))}
  vpos = lambda m_idx:  ptr+m_idx if (m := get(modes, m_idx-1, 0)) == 1 else (values[ptr+m_idx] + (rel_base if m == 2 else 0))
  cur_position = [0,0] # manual offset for max bounds (X(0 - 42) Y(-5 - 0))
  cur_direction = 0 # U/D/L/R 0/1/2/3
  cur_color = 1 # first input is 1 (white panel)
  robot_plane = {}
  complete_directions = True # start true so first time is false
  ptr = 0
  rel_base = 0
  while ptr < len(values.keys()):
    modes = [int(c) for c in str(values[ptr])[:-2]][::-1]   # all leftmost digits (right-to-left) # rightmost is last param
    if  (opcode := int(str(values[ptr])[-2:])) == 99: break # two rightmost digits
    elif opcode == 1: values[vpos(3)] = values.setdefault(vpos(1), 0) + values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 2: values[vpos(3)] = values.setdefault(vpos(1), 0) * values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 3: values[vpos(1)] = robot_plane.setdefault(f"{cur_position[0]}_{cur_position[1]}", 1); ptr += 2 # first input is 1 (white panel)
    elif opcode == 4:
      complete_directions = not complete_directions
      if not complete_directions: cur_color = values.setdefault(vpos(1), 0) # default is black panel
      else:
        robot_plane[f"{cur_position[0]}_{cur_position[1]}"] = cur_color
        direction = values.setdefault(vpos(1), 0)
        if   cur_direction == 0: cur_direction = 3 if direction else 2 # up -> right OR left
        elif cur_direction == 1: cur_direction = 2 if direction else 3 # down -> left OR right
        elif cur_direction == 2: cur_direction = 0 if direction else 1 # left -> up OR down
        elif cur_direction == 3: cur_direction = 1 if direction else 0 # right -> down OR up
        if   cur_direction == 0: cur_position[1] += 1 # up 1
        elif cur_direction == 1: cur_position[1] -= 1 # down 1
        elif cur_direction == 2: cur_position[0] -= 1 # left 1
        elif cur_direction == 3: cur_position[0] += 1 # right 1
      ptr += 2
    elif opcode == 5: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) != 0 else ptr+3
    elif opcode == 6: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) == 0 else ptr+3
    elif opcode == 7: values[vpos(3)] = int(values.setdefault(vpos(1), 0) <  values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 8: values[vpos(3)] = int(values.setdefault(vpos(1), 0) == values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 9: rel_base += values.setdefault(vpos(1), 0); ptr += 2
  min_X = min([int(idx.split("_")[0]) for idx in robot_plane.keys()])
  max_X = max([int(idx.split("_")[0]) for idx in robot_plane.keys()])
  min_Y = min([int(idx.split("_")[1]) for idx in robot_plane.keys()])
  max_Y = max([int(idx.split("_")[1]) for idx in robot_plane.keys()])
  robot_hull = [[' ' for _ in range(abs(min_X)+max_X+1)] for _ in range(abs(min_Y)+max_Y+1)]
  for x,y in (idx.split("_") for idx in robot_plane.keys()): robot_hull[int(y)+abs(min_Y)][int(x)+abs(min_X)] = 'X' if robot_plane[f"{x}_{y}"] else ' '
  print("Puzzle 11.5: Hull identifier: \n{}".format("\n".join(("".join(robot_hull[h])) for h in range(abs(min_Y)+max_Y+1))))

#############
# puzzle 13 #
#############
## 13 ##
def puzzle13():
  with open('d13_input.txt', 'r') as f: values = {idx: int(v) for idx,v in enumerate(f.readlines()[0].strip().split(','))}
  vpos = lambda m_idx:  ptr+m_idx if (m := get(modes, m_idx-1, 0)) == 1 else (values[ptr+m_idx] + (rel_base if m == 2 else 0))
  ptr = 0
  rel_base = 0
  output = [[]]
  while ptr < len(values.keys()):
    modes = [int(c) for c in str(values[ptr])[:-2]][::-1]   # all leftmost digits (right-to-left) # rightmost is last param
    if  (opcode := int(str(values[ptr])[-2:])) == 99: break # two rightmost digits
    elif opcode == 1: values[vpos(3)] = values.setdefault(vpos(1), 0) + values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 2: values[vpos(3)] = values.setdefault(vpos(1), 0) * values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 3: values[vpos(1)] = int(input("Input (13): ")); ptr += 2
    elif opcode == 4:
      val = values.setdefault(vpos(1), 0)
      if len(output[-1]) == 3: output.append([]) # full instructions -> append new empty packet
      if   len(output[-1]) == 0: output[-1].append(val) # X position
      elif len(output[-1]) == 1: output[-1].append(val) # Y position
      elif len(output[-1]) == 2: output[-1].append(val) # tile ID position
      ptr += 2
    elif opcode == 5: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) != 0 else ptr+3
    elif opcode == 6: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) == 0 else ptr+3
    elif opcode == 7: values[vpos(3)] = int(values.setdefault(vpos(1), 0) <  values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 8: values[vpos(3)] = int(values.setdefault(vpos(1), 0) == values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 9: rel_base += values.setdefault(vpos(1), 0); ptr += 2
  block_tiles = sum(int(bool(tile_id == 2)) for _,_,tile_id in output)
  print(f"Puzzle 13: Number of block tiles: {block_tiles}")

## 13.5 ##
def puzzle135():
  with open('d13_input.txt', 'r') as f: values = {idx: int(v) for idx,v in enumerate(f.readlines()[0].strip().split(','))}
  vpos = lambda m_idx:  ptr+m_idx if (m := get(modes, m_idx-1, 0)) == 1 else (values[ptr+m_idx] + (rel_base if m == 2 else 0))
  values[0] = 2 # free play, no quarters required!
  ptr = 0
  rel_base = 0
  cur_score = 0
  output = [[]]
  #pre_inputs = [-1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -1, -1, -1, 0, 0, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
  pre_inputs = [0, 1, -1, 0, 0, 0, 0, 1]
  inputs = []
  def print_board():
    height = 1+max(y for x,y,_ in output)
    width  = 1+max(x for x,y,_ in output)
    board = [[' ' for _ in range(width)] for _ in range(height)]
    for x,y,tile_id in output:
      if   tile_id == 0: tile = ' ' # empty
      elif tile_id == 1: tile = '|' # wall
      elif tile_id == 2: tile = '□' # block
      elif tile_id == 3: tile = '–' # paddle
      elif tile_id == 4: tile = '•' # ball
      board[y][x] = tile
    print("\n".join(("".join(board[h])) for h in range(height)))
  while ptr < len(values.keys()):
    modes = [int(c) for c in str(values[ptr])[:-2]][::-1]   # all leftmost digits (right-to-left) # rightmost is last param
    if  (opcode := int(str(values[ptr])[-2:])) == 99: break # two rightmost digits
    elif opcode == 1: values[vpos(3)] = values.setdefault(vpos(1), 0) + values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 2: values[vpos(3)] = values.setdefault(vpos(1), 0) * values.setdefault(vpos(2), 0); ptr += 4
    elif opcode == 3:
      if len(pre_inputs) > 0:
        sel = pre_inputs.pop(0)
      else:
        print_board()
        print(f"User score: {cur_score}")
        try:
          sel = int(input("Input (13.5) [-1/0/1]: "))
        except ValueError:
          sel = 0#int(input("NOPE Input (13.5) [-1/0/1]: "))
      inputs.append(sel)
      values[vpos(1)] = sel; ptr += 2
    elif opcode == 4:
      val = values.setdefault(vpos(1), 0)
      if len(output[-1]) == 3: output.append([]) # full instructions -> append new empty packet
      if   len(output[-1]) == 0: output[-1].append(val) # X position
      elif len(output[-1]) == 1: output[-1].append(val) # Y position
      elif len(output[-1]) == 2: output[-1].append(val) # tile ID position
      if len(output[-1]) == 3 and output[-1][0:2] == [-1,0]: cur_score = output.pop()[2]
      ptr += 2
    elif opcode == 5: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) != 0 else ptr+3
    elif opcode == 6: ptr = values.setdefault(vpos(2), 0) if values.setdefault(vpos(1), 0) == 0 else ptr+3
    elif opcode == 7: values[vpos(3)] = int(values.setdefault(vpos(1), 0) <  values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 8: values[vpos(3)] = int(values.setdefault(vpos(1), 0) == values.setdefault(vpos(2), 0)); ptr += 4
    elif opcode == 9: rel_base += values.setdefault(vpos(1), 0); ptr += 2
  print(f"All inputs: {inputs}")
  print(f"Puzzle 13.5: Final score: {cur_score}")


##########################
if __name__ == '__main__':
  # puzzle1()
  # puzzle15()
  # puzzle2()
  # puzzle25()
  # puzzle3()
  # puzzle35()
  # puzzle4()
  # puzzle45()
  # puzzle5()
  # puzzle55()
  # puzzle6()
  # puzzle65()
  # puzzle7()
  # puzzle75()
  # puzzle8()
  # puzzle85()
  # puzzle9()
  # puzzle95()
  # puzzle10()
  # puzzle11()
  # puzzle115()
  # puzzle13()
  puzzle135()