Advent-of-Code/2019/07/code.py

""" https://adventofcode.com/2019/day/7 """

import queue, threading

class InvalidOpcode(Exception):
    pass

def readFile():
    with open(f"{__file__.rstrip('code.py')}input.txt", "r") as f:
        return [int(num) for num in f.readline().split(",")]

class Amp:
    def __init__(self, id, vals, phase, ownQueue, nextQueue):
        self.id = id
        self.vals = vals.copy()
        self.phase = phase
        self.output = 0
        self.queue = ownQueue
        self.next = nextQueue
        self.phased = False
        self.i = 0

    def run(self):
        while 1:
            opcode = (self.vals[self.i] % 100, self.vals[self.i] // 100 % 10, 
                self.vals[self.i] // 1000 % 10, self.vals[self.i] // 10000 % 10)

            # 99 : Termination
            # 0 Parameter
            if opcode[0] == 99:
                self.output = self.vals[0]
                self.next.put(self.output)
                break

            # 1 : Addition
            # 3 parameter
            elif opcode[0] == 1:
                a = self.vals[self.i+1] if opcode[1] == 0 else self.i+1
                b = self.vals[self.i+2] if opcode[2] == 0 else self.i+2
                self.vals[self.vals[self.i+3]] = self.vals[a] + self.vals[b]
                self.i += 4

            # 2 : Multiplication
            # 3 parameter
            elif opcode[0] == 2:
                a = self.vals[self.i+1] if opcode[1] == 0 else self.i+1
                b = self.vals[self.i+2] if opcode[2] == 0 else self.i+2
                self.vals[self.vals[self.i+3]] = self.vals[a] * self.vals[b]
                self.i += 4

            # 3 : Input
            # 1 parameter
            elif opcode[0] == 3: 
                if self.phased:
                    self.vals[self.vals[self.i+1]] = self.queue.get()
                else:
                    self.vals[self.vals[self.i+1]], self.phased = self.phase, True
                self.i += 2

            # 4 : Output
            # 1 parameter
            elif opcode[0] == 4: 
                a = self.vals[self.i+1] if opcode[1] == 0 else self.i+1
                self.vals[0] = self.vals[a]
                self.next.put(self.vals[0])
                self.i += 2

            # 5 : Jump-if-true
            # 6 : Jump-if-false
            # 2 parameter
            elif opcode[0] in [5, 6]:
                a = self.vals[self.i+1] if opcode[1] == 0 else self.i+1
                if opcode[0] == 5 and self.vals[a] or \
                opcode[0] == 6 and not self.vals[a]:
                    b = self.vals[self.i+2] if opcode[2] == 0 else self.i+2
                    self.i = self.vals[b]
                else:
                    self.i += 3

            # 7 : less-than
            # 8 : equals
            # 3 parameter
            elif opcode[0] in [7, 8]:
                a = self.vals[self.i+1] if opcode[1] == 0 else self.i+1
                b = self.vals[self.i+2] if opcode[2] == 0 else self.i+2
                self.vals[self.vals[self.i+3]] = 1 if opcode[0] == 7 and self.vals[a] < \
                    self.vals[b] or opcode[0] == 8 and self.vals[a] == self.vals[b] else 0
                self.i += 4
            
            else:
                raise InvalidOpcode

def amplify(vals : list, phaseSettings : tuple):
    q = [queue.Queue() for i in range(5)]
    amps = [Amp(i, vals, phaseSettings[i], q[i], q[(i+1) % 5]) for i in range(5)]
    amps[0].queue.put(0)
    if phaseSettings[0] < 5:
        amps[4].next = queue.Queue()
    threads = [threading.Thread(target=amps[i].run()) for i in range(5)]

    for thread in threads:
        thread.start()

    for thread in threads:
        thread.join()

    return amps[4].next.get()

def part1(vals : list):
    return max([amplify(vals, (a, b, c, d, e)) for a in range(5) for b in range(5) for c in range(5) for d in range(5)
        for e in range(5) if b != a and c not in [a, b] and d not in [a, b, c] and e not in [a, b, c, d]])

def part2(vals : list):
    pass

def test():
    vals = [3,15,3,16,1002,16,10,16,1,16,15,15,4,15,99,0,0]
    assert amplify(vals, (4,3,2,1,0)) == 43210
    vals = [3,23,3,24,1002,24,10,24,1002,23,-1,23,
        101,5,23,23,1,24,23,23,4,23,99,0,0]
    assert amplify(vals, (0,1,2,3,4)) == 54321
    vals = [3,31,3,32,1002,32,10,32,1001,31,-2,31,1007,31,0,33,
        1002,33,7,33,1,33,31,31,1,32,31,31,4,31,99,0,0,0]
    assert amplify(vals, (1,0,4,3,2)) == 65210
    vals = [3,26,1001,26,-4,26,3,27,1002,27,2,27,1,27,26,
        27,4,27,1001,28,-1,28,1005,28,6,99,0,0,5]
    #print(amplify(vals, (9,8,7,6,5)))
     
if __name__ == "__main__":
    test()
    vals = readFile()
    print(f"Part 1: {part1(vals)}")
    print(f"Part 2: {part2(vals)}")