mirror of
https://github.com/Crocmagnon/advent-of-code.git
synced 2024-11-05 14:23:58 +01:00
110 lines
2.8 KiB
Python
110 lines
2.8 KiB
Python
NUMBER_OF_PARAMS_MAP = {
|
|
1: 3,
|
|
2: 3,
|
|
3: 1,
|
|
4: 1,
|
|
5: 2,
|
|
6: 2,
|
|
7: 3,
|
|
8: 3,
|
|
}
|
|
|
|
LAST_IS_RESULT_MAP = {
|
|
1: True,
|
|
2: True,
|
|
3: True,
|
|
4: False,
|
|
5: False,
|
|
6: False,
|
|
7: True,
|
|
8: True,
|
|
}
|
|
|
|
|
|
def get_value(program, args, param_modes, index):
|
|
if param_modes[index] == 0:
|
|
return program[args[index]]
|
|
return args[index]
|
|
|
|
|
|
def parse_args(program, raw_args, param_modes, last_is_result=False):
|
|
args = []
|
|
limit = -1 if last_is_result else None
|
|
for i, arg in enumerate(raw_args[:limit]):
|
|
args.append(get_value(program, raw_args, param_modes, i))
|
|
if last_is_result:
|
|
args.append(raw_args[-1])
|
|
return args
|
|
|
|
|
|
def compute(lst):
|
|
program = lst.copy()
|
|
|
|
pointer = 0
|
|
while pointer < len(program):
|
|
pointer_moved = False
|
|
instruction = str(program[pointer])
|
|
code = int(instruction[-2:])
|
|
if code == 99:
|
|
print("Halting due to code 99")
|
|
return program
|
|
|
|
number_of_params = NUMBER_OF_PARAMS_MAP[code]
|
|
offset = number_of_params + 1
|
|
param_modes = instruction[:-2]
|
|
param_modes = param_modes.zfill(number_of_params)
|
|
param_modes = list(map(int, reversed(param_modes)))
|
|
raw_params = []
|
|
for i in range(1, offset):
|
|
raw_params.append(program[pointer + i])
|
|
|
|
last_is_result = LAST_IS_RESULT_MAP[code]
|
|
params = parse_args(program, raw_params, param_modes, last_is_result)
|
|
|
|
if code == 1:
|
|
# Addition
|
|
program[params[2]] = params[0] + params[1]
|
|
elif code == 2:
|
|
# Multiplication
|
|
program[params[2]] = params[0] * params[1]
|
|
elif code == 3:
|
|
# Input
|
|
program[params[0]] = int(input(f"Input for instruction {pointer}\n> "))
|
|
elif code == 4:
|
|
# Output
|
|
print(params[0])
|
|
elif code == 5:
|
|
# Jump if true
|
|
if params[0] != 0:
|
|
pointer = params[1]
|
|
pointer_moved = True
|
|
elif code == 6:
|
|
# Jump if false
|
|
if params[0] == 0:
|
|
pointer = params[1]
|
|
pointer_moved = True
|
|
elif code == 7:
|
|
# Less than
|
|
if params[0] < params[1]:
|
|
program[params[2]] = 1
|
|
else:
|
|
program[params[2]] = 0
|
|
elif code == 8:
|
|
# Equals
|
|
if params[0] == params[1]:
|
|
program[params[2]] = 1
|
|
else:
|
|
program[params[2]] = 0
|
|
|
|
else:
|
|
raise ValueError(f"Something bad happened, code={code}")
|
|
|
|
if not pointer_moved:
|
|
pointer += offset
|
|
|
|
return program
|
|
|
|
|
|
if __name__ == "__main__":
|
|
with open("inputs/day05") as f:
|
|
compute(list(map(int, f.read().split(","))))
|