day_12_literal.py

with open("./inputs/12.txt", 'r') as infile:
    instructions = infile.read().splitlines()


def execute(c):
    register = {'a': 0, 'b': 0, 'c': c, 'd': 0}
    interpret = lambda val: int(val) if val.isdigit() else register[val]
    i = 0

    while i < len(instructions):
        instr, x, *y = instructions[i].split()
        y = y[0] if y else None

        if instr == 'cpy':
            register[y] = interpret(x)

        if instr == 'inc':
            register[x] += 1

        if instr == 'dec':
            register[x] -= 1

        if instr == 'jnz':
            if interpret(x) != 0:
                i += int(y)
                continue

        i += 1
    return register['a']


print("Well, this should be quick....")
print("Initializing all registers with 0. Firing the code.")
print(f"The end value of A register is: {execute(c=0)}")
print("....")
print("What? The starting value for C register is 1?")
# print(f"Then the end value of A register is: {execute(c=1)}")