[py] Port 2017_08

py/2017/08/solve.py

@@ -1,96 +0,0 @@
-import collections
-import re
-import sys
-
-# PART 1
-
-class Instruction:
-	INSTRUCTION_RE = r"(\S+) (inc|dec) (-?\d+) if (\S+) (<|<=|>|>=|==|!=) (-?\d+)\n"
-
-	def __init__(self, register, mode, amount, c_register, c_operator, c_amount):
-		self.register = register
-		self.mode = mode
-		self.amount = amount
-		self.c_register = c_register
-		self.c_operator = c_operator
-		self.c_amount = c_amount
-
-	@classmethod
-	def from_line(cls, line):
-		match = re.fullmatch(cls.INSTRUCTION_RE, line)
-
-		register   =     match.group(1)
-		mode       =     match.group(2)
-		amount     = int(match.group(3))
-		c_register =     match.group(4)
-		c_operator =     match.group(5)
-		c_amount   = int(match.group(6))
-
-		return cls(register, mode, amount, c_register, c_operator, c_amount)
-
-	def compare_to(self, n):
-		if self.c_operator == "<":
-			return n < self.c_amount
-		elif self.c_operator == "<=":
-			return n <= self.c_amount
-		elif self.c_operator == ">":
-			return n > self.c_amount
-		elif self.c_operator == ">=":
-			return n >= self.c_amount
-		elif self.c_operator == "==":
-			return n == self.c_amount
-		elif self.c_operator == "!=":
-			return n != self.c_amount
-
-	def total(self):
-		if self.mode == "inc":
-			return self.amount
-		elif self.mode == "dec":
-			return -self.amount
-
-class Machine:
-	def __init__(self, instructions):
-		self.instructions = instructions
-		self.reset()
-
-	def reset(self):
-		self.registers = collections.defaultdict(lambda: 0)
-		self.max_all_time = 0
-
-	@classmethod
-	def from_file(cls, filename):
-		instructions = []
-
-		with open(filename, "r") as f:
-			for line in f:
-				instructions.append(Instruction.from_line(line))
-
-		return cls(instructions)
-
-	def execute_instruction(self, i):
-		c_amount = self.registers.get(i.c_register, 0)
-		if i.compare_to(c_amount):
-			self.registers[i.register] += i.total()
-			self.max_all_time = max(self.max_all_time, self.registers[i.register])
-
-	def execute(self):
-		for i in self.instructions:
-			self.execute_instruction(i)
-
-	def max_register(self):
-		return max(self.registers.values())
-
-# PART 2
-
-def main(filename):
-	print(f"Solutions for {filename}")
-	machine = Machine.from_file(filename)
-	machine.reset()
-	machine.execute()
-	max_register = machine.max_register()
-	print(f"Part 1: {max_register}")
-	print(f"Part 2: {machine.max_all_time}")
-
-if __name__ == "__main__":
-	for filename in sys.argv[1:]:
-		main(filename)

py/2017/08/test_input.txt

@@ -1,4 +0,0 @@
-b inc 5 if a > 1
-a inc 1 if b < 5
-c dec -10 if a >= 1
-c inc -20 if c == 10