AdventOfCode/2017/23/solution.py

#!/bin/python3
import sys,re
from pprint import pprint
sys.path.insert(0, '../../')
from fred import list2int
from math import sqrt
input_f = 'input'

part = 3
#########################################
#                                       #
#              Part 1                   #
#                                       #
#########################################
def parse_input(input_str):
    pattern = r"^([a-zA-Z]{3})\s{1}(\w)?\s?(-?\w+)$"

    match = re.match(pattern, input_str)
    if match:
        if match.group(2):
            return match.group(1),match.group(2),match.group(3)
        else:
            return match.group(1),match.group(3)
        
    return None 

def sets_return(x,Sets):
    if x.isalpha():
        return Sets[x]
    return int(x)
    
if part == 1:

    instructions = []

    Sets = {
        'a': 0,
        'b': 0,
        'c': 0,
        'd': 0,
        'e': 0,
        'f': 0,
        'g': 0,
        'h': 0
    }

    count = 0

    with open(input_f) as file:
        for line in file:
            instructions.append(list(parse_input(line.rstrip())))

    intr = 0
    while 0 <= intr < len(instructions):

        i = instructions[intr]

        x = i[1]
        y = i[2]

        if i[0] == 'set':
            Sets[x] = sets_return(y,Sets)
            
        elif i[0] == 'sub':
            Sets[x] -= sets_return(y,Sets)
            
        elif i[0] == 'mul':
            Sets[x] *= sets_return(y,Sets)
            count += 1

        elif i[0] == 'jnz': 
            if sets_return(x,Sets) != 0:
                intr += sets_return(y,Sets)-1
        intr += 1  
        
    print(count)

#########################################
#                                       #
#              Part 2                   #
#                                       #
#########################################
if part == 2:
    instructions = []

    Sets = {
        'a': 1,
        'b': 107900,
        'c': 124900,
        'd': 3,
        'e': 107900,
        'f': 1,
        'g': -107897,
        'h': 0
    }

    count = 0

    with open(input_f) as file:
        for line in file:
            instructions.append(list(parse_input(line.rstrip())))

    intr = 0
    while 0 <= intr < len(instructions):

        i = instructions[intr]

        x = i[1]
        y = i[2]

        if i[0] == 'set':
            Sets[x] = sets_return(y,Sets)
            
        elif i[0] == 'sub':
            Sets[x] -= sets_return(y,Sets)
            
        elif i[0] == 'mul':
            Sets[x] *= sets_return(y,Sets)
            count += 1

        elif i[0] == 'jnz': 
            if sets_return(x,Sets) != 0:
                intr += sets_return(y,Sets)-1
        intr += 1  
        print(i)
        print(Sets)
        input()
    print(count)


if part == 3:
    b = 107900
    d = 2
    e = 2
    h = 0
    for x in range(107900,124900,17):
        for y in range(2,x):
            if x%y == 0:
                print(x,y,h)
                h+=1
    print(h)

# def is_composite(n):
#     if n < 2:
#         return False
#     for i in range(2, int(sqrt(n)) + 1):
#         if n % i == 0:
#             return True
#     return False

# h = sum(1 for b in range(107900, 124901, 17) if is_composite(b))
# print(h)