def process_text(input):
rules_text, yours_text, nearby_text = input.strip().split('\n\n')
yours = util.ints(yours_text)
nearby = [util.ints(x) for x in nearby_text.splitlines()[1:]]
rules = {}
for line in rules_text.splitlines():
field, values = line.split(': ')
options = values.split(' or ')
rules[field] = options
return rules, yours, nearby
def process(input):
in_paren = False
in_marker = False
marker = ''
num_chars = -1
data = []
for i, x in enumerate(input):
if num_chars > 0:
data.append(x)
num_chars -= 1
continue
if x == '(':
in_paren = True
if not in_marker:
in_marker = True
if in_marker:
marker += x
else:
data.append(x)
if x == ')':
in_paren = False
if in_marker:
data.append(marker)
num_chars, repeat = util.ints(marker)
in_marker = False
marker = ''
# print(data)
output = ''
num_chars = -1
char_cnt = 0
char_group = ''
for x in data:
if len(x) > 1:
num_chars, repeat = util.ints(x)
char_cnt = 0
char_group = ''
elif num_chars > char_cnt:
char_group += x
char_cnt += 1
if num_chars == char_cnt:
for i in range(repeat):
output += char_group
num_chars = -1
else:
output += x
# print(output)
# print()
return output
def shuffle(input, deck):
for line in input.strip().splitlines():
if 'new' in line:
deck = deal_new(deck)
if 'increment' in line:
n = util.ints(line)[0]
deck = deal_inc(deck, n)
if 'cut' in line:
n = util.ints(line)[0]
deck = cut(deck, n)
print(line)
print(' ', deck)
return deck
def shuffle(input, size, index):
for line in reversed(input.strip().splitlines()):
if 'new' in line:
index = deal_new(size, index)
if 'increment' in line:
n = util.ints(line)[0]
index = deal_inc(size, index, n)
if 'cut' in line:
n = util.ints(line)[0]
index = cut(size, index, n)
# print(line)
# print(' ', index)
return index
def process(input, preamble_len):
preamble = []
for num in util.ints(input):
if len(preamble) == preamble_len:
# print(preamble, num)
if not is_valid(preamble, num):
return num
preamble = preamble[1:]
preamble.append(num)
def find_contig(input, target_sum):
current_set = []
input = util.ints(input)
for i_start in range(0, len(input)):
for i_end in range(i_start, len(input)):
# print(i_start, i_end)
nums = input[i_start:i_end]
# print(nums, sum(nums))
if sum(nums) == target_sum:
return min(nums) + max(nums)
def num_arrangements(input):
adapters = util.ints(input)
adapters = adapters + [max(adapters) + 3]
adapters = sorted(adapters)
print(adapters)
global cache
cache = {}
num_paths = get_valid_paths(adapters, 0)
print('total', num_paths)
return num_paths
def process(input):
instrs = input.strip().splitlines()
mask = None
mem = {}
for instr in instrs:
cmd, value = instr.split(' = ')
if cmd == 'mask':
mask = value
else:
pos = util.ints(cmd)[0]
masked_value = get_masked_value(mask, value)
mem[pos] = masked_value
total = sum([v for v in mem.values()])
return total
def shuffle(input, size, iterations, index):
increment_mul = 1
offset_diff = 0
for line in input.strip().splitlines():
if 'new' in line:
increment_mul *= -1
offset_diff += increment_mul
if 'increment' in line:
n = util.ints(line)[0]
increment_mul *= pow(int(n), size - 2, size)
if 'cut' in line:
n = util.ints(line)[0]
offset_diff += int(n) * increment_mul
increment_mul %= size
offset_diff %= size
increment = pow(increment_mul, iterations, size)
offset = offset_diff * (1 - increment) * pow(
(1 - increment_mul) % size, size - 2, size)
offset %= size
card = (offset + index * increment) % size
return card
def connect_all(input):
adapters = util.ints(input)
adapters.append(max(adapters) + 3)
adapters = sorted(adapters)
print(adapters)
deltas = {}
source = 0
for adapter in adapters:
diff = adapter - source
source = adapter
if diff not in deltas:
deltas[diff] = 0
deltas[diff] += 1
# print(deltas)
return deltas
def test():
deck = [x for x in range(10)]
assert deal_new(deck) == util.ints('9 8 7 6 5 4 3 2 1 0')
assert cut(deck, 3) == util.ints('3 4 5 6 7 8 9 0 1 2')
assert cut(deck, -4) == util.ints('6 7 8 9 0 1 2 3 4 5')
assert deal_inc(deck, 3) == util.ints('0 7 4 1 8 5 2 9 6 3')
assert shuffle(r"""
deal with increment 7
deal into new stack
deal into new stack
""", deck) == util.ints('0 3 6 9 2 5 8 1 4 7')
assert shuffle(r"""
cut 6
deal with increment 7
deal into new stack
""", deck) == util.ints('3 0 7 4 1 8 5 2 9 6')
assert shuffle(r"""
deal with increment 7
deal with increment 9
cut -2
""", deck) == util.ints('6 3 0 7 4 1 8 5 2 9')
assert shuffle(r"""
deal into new stack
cut -2
deal with increment 7
cut 8
cut -4
deal with increment 7
cut 3
deal with increment 9
deal with increment 3
cut -1
""", deck) == util.ints('9 2 5 8 1 4 7 0 3 6')
exit(0)
def process(input, count):
nums = util.ints(input)
ages = {}
last_num = None
for i, num in enumerate(nums):
ages[num] = [i + 1]
last_num = num
print(ages)
for i in range(len(nums) + 1, count + 1):
if last_num in ages and len(ages[last_num]) > 1:
num = ages[last_num][0] - ages[last_num][1]
else:
num = 0
if num in ages:
ages[num] = [i, ages[num][0]]
else:
ages[num] = [i]
# if i%1000000 == 0 or i == count+1:
# print('Turn', i, ':', num)
# print(ages)
last_num = num
return last_num
for m in moons:
m.reset()
# Part 2
num_steps = sim_moons_state(moons)
print('Num steps to repeat:', num_steps)
assert num_steps == 2772
exit(0)
# test()
with open('input.txt', 'r') as f:
input = [util.ints(x) for x in f.readlines()]
temp = input.copy()
moons = []
for i, coords in enumerate(input):
m = Moon(i, coords, [0, 0, 0])
moons.append(m)
print(*moons, sep='\n')
# Part 1
energy = sim_moons_steps(moons, 1000)
print('Energy:', energy)
assert energy == 7988
for m in moons:
m.reset()
def text_to_pairs(text):
dirs = util.words(text)
steps = util.ints(text)
pairs = list(zip(dirs, steps))
return pairs
