1.py

with open('1.in') as f: 
	data = f.read()

print('First half')
print(data.count('(') - data.count(')'))

i = 0
floor = 0

while floor >= 0:
	if data[i] == '(':
		floor += 1
	else:
		floor -= 1
	
	i += 1

print('Second half')
print(i)

2.py

with open('2.in') as f: 
	data = f.read().split('\n')[:-1]

area = 0 
peri = 0

for l in data:
	h, w, l = [int(i) for i in l.split('x')]
	
	a, b, c = l*w, w*h, h*l
	area += 2*(a+b+c) + min(a, b, c)
	
	peri += 2*(h+w+l - max(h,w,l)) + h*w*l

print('First Half')
print(area)

print('Second Half')
print(peri)

3.py

with open('3.in') as f: 
	data = f.read()

houses = set()
houses.add((0, 0))
x = 0
y = 0

for c in data:
	if c == '^':
		y += 1
	if c == 'v':
		y -= 1
	if c == '>':
		x += 1
	if c == '<':
		x -= 1
	
	houses.add((x, y))

print('First half')
print(len(houses))

houses = set()
houses.add((0, 0))
x = [0, 0]
y = [0, 0]

for i, c in enumerate(data):
	p = i%2
	
	if c == '^':
		y[p] += 1
	if c == 'v':
		y[p] -= 1
	if c == '>':
		x[p] += 1
	if c == '<':
		x[p] -= 1
	
	houses.add((x[p], y[p]))

print('Second half')
print(len(houses))

4.py

from hashlib import md5

input = 'yzbqklnj'
i = 0
hash = '' 

while not hash.startswith('00000'):
	i += 1
	hash = md5(input + str(i)).hexdigest()

print('First half')
print(i)

while not hash.startswith('000000'):
	i += 1
	hash = md5(input + str(i)).hexdigest()

print('Second half')
print(i)

5.py

with open('5.in') as f: 
	data = f.read().split('\n')

nice = 0

for w in data:
	if 'ab' in w or 'cd' in w or 'pq' in w or 'xy' in w:
		continue
	if sum([w.count(c) for c in 'aeiou']) < 3:
		continue
	for i in range(1, len(w)):
		if w[i] == w[i-1]:
			nice += 1
			break

print('First half')
print(nice)

nice = 0

for w in data:
	for i in range(1, len(w)):
		if w.count(w[i-1] + w[i]) > 1:
			break
	else:
		continue
	
	for i in range(2, len(w)):
		if w[i] == w[i-2]:
			break
	else:
		continue
	
	nice += 1


print('Second half')
print(nice)

7.py

with open('7.in') as f:
	instructions = f.read().split('\n')[:-1]

operations = {
	'AND': lambda a, b: a & b, 
	'OR': lambda a, b: a | b, 
	'NOT': lambda a, b: ~b, 
	'RSHIFT': lambda a, b: a >> b,
	'LSHIFT': lambda a, b: a << b
}

depedency = {}
memo = {}

for inst in instructions:
	left, right = inst.split(' -> ')
	depedency[right] = left

def resolve(var):
	if var in memo:
		return memo[var]

	if var == '':
		return var

	if var.isdigit():
		return int(var)

	dependents = depedency[var]

	if dependents.isdigit():
		return int(dependents)

	for op, func in operations.items():
		if op in dependents:
			print(dependents)
			operands = [resolve(a.strip()) for a in dependents.split(op)]
			memo[var] = func(*operands)
			return memo[var]

	return resolve(dependents)

print('Part 1')
print(resolve('a'))