Add day 14 and 15
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2fc461d579
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3 changed files with 590 additions and 0 deletions
242
Day15/Day15.py
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242
Day15/Day15.py
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from pprint import pprint
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from collections import deque
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import fileinput
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import time
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class Elf:
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power = 3
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locations = set()
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deaths = 0
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def __init__(self):
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self.health = 200
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self.targeted = False
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def __repr__(self):
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return "E"
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class Goblin:
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enemy = Elf
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power = 3
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locations = set()
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deaths = 0
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def __init__(self):
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self.health = 200
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self.targeted = False
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def __repr__(self):
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return "G"
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Elf.enemy = Goblin
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class Wall:
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enemy = None
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def __init__(self):
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self.targeted = False
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def __repr__(self):
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return "#"
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class Empty:
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enemy = None
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def __init__(self):
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self.targeted = False
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def __repr__(self):
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return "." if not self.targeted else "\033[33m?\033[0m"
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NEIGHBORS = [(0, -1), (-1, 0), (1, 0), (0, 1)]
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def read():
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field = []
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Elf.deaths = 0
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Goblin.deaths = 0
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Elf.locations.clear()
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Goblin.locations.clear()
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for y, line in enumerate(fileinput.input()):
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row = []
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for x, char in enumerate(line.rstrip()):
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if char == "E":
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row.append(Elf())
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Elf.locations.add((x, y))
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elif char == "G":
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row.append(Goblin())
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Goblin.locations.add((x, y))
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elif char == "#":
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row.append(Wall())
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elif char == ".":
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row.append(Empty())
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else:
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raise ValueError(char)
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field.append(row)
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return field
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def distance(a, b):
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(ax, ay), (bx, by) = a, b
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return abs(ax - bx) + abs(ay - by)
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def find_closest(field, pos, targets):
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width = len(field[0])
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height = len(field)
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queue = deque([[pos]])
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seen = {pos}
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paths = []
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while queue:
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path = queue.popleft()
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x, y = path[-1]
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if (x, y) in targets:
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paths.append(path[1:])
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for dx, dy in NEIGHBORS:
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x_, y_ = x + dx, y + dy
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if 0 <= x_ < width and 0 <= y_ < height \
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and type(field[y_][x_]) is Empty \
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and (x_, y_) not in seen:
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queue.append(path + [(x_, y_)])
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seen.add((x_, y_))
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if not paths or [] in paths:
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return None
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return min(paths, key=lambda path: (len(path), path[-1][1], path[-1][0], path[0][1], path[0][0]))
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def move(field, x, y, value):
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for row in field:
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for col in row:
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col.targeted = False
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targets = []
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for tx, ty in value.enemy.locations:
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targets.extend([(tx + dx, ty + dy) for dx, dy in NEIGHBORS])
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if not targets:
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raise StopIteration
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for tx, ty in targets:
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field[ty][tx].targeted = True
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closest = find_closest(field, (x, y), targets)
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# print_field(field, highlight=(x, y), path=closest)
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# time.sleep(0.3)
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if closest:
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tx, ty = closest[0]
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if type(field[ty][tx]) is Empty:
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# print(f"{field[y][x]}@{x},{y} moves to {tx},{ty}")
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type(value).locations.discard((x, y))
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type(value).locations.add((tx, ty))
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field[ty][tx] = field[y][x]
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field[y][x] = Empty()
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return tx, ty
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return x, y
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def attack(field, x, y, value):
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width = len(field[0])
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height = len(field)
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neighbors = [(field[y + y_][x + x_], (x + x_, y + y_))
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for x_, y_ in NEIGHBORS
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if 0 <= y + y_ < width and 0 <= x + x_ < width and \
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type(field[y + y_][x + x_]) is value.enemy]
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if not neighbors:
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return
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target, (tx, ty) = \
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min(neighbors, key=lambda x: (x[0].health, x[1][1], x[1][0]))
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# print(f"{value}@{x},{y}:{value.health} attacks "
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# f"{target}@{tx},{ty}:{target.health}->{target.health - value.power}")
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target.health -= value.power
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if target.health <= 0:
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# print(f"{target}@{tx,ty} dies :(")
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type(target).locations.discard((tx, ty))
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type(target).deaths += 1
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field[ty][tx] = Empty()
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def print_field(field, steps=None, highlight=None, path=None):
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if steps is not None:
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print(f"round={steps}")
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for y, row in enumerate(field):
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units = []
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for x, value in enumerate(row):
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if highlight == (x, y):
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print(end="\033[31;1m")
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if path and (x, y) in path:
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print(end="\033[44;1m")
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print(value, end="\033[0m")
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if type(value) in (Goblin, Elf):
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units.append(value)
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etc = sorted(units, key=lambda unit: (str(unit), unit.health))
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print(" ", ", ".join(f"{x}({x.health})" for x in etc))
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print()
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def step(field, steps):
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# print_field(field, steps)
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seen_units = set()
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for y, row in enumerate(field):
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for x, value in enumerate(row):
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if type(value) not in (Elf, Goblin) or value in seen_units:
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continue
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seen_units.add(value)
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tx, ty = move(field, x, y, value)
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attack(field, tx, ty, value)
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def main():
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field = read()
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steps = 0
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while True:
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try:
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step(field, steps)
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except StopIteration:
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total_health = 0
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for row in field:
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for value in row:
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if type(value) in (Elf, Goblin) and value.health > 0:
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total_health += value.health
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print("Rounds:", steps)
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print("Health:", total_health)
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print("Elf Deaths:", Elf.deaths)
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print(total_health * steps)
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break
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steps += 1
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while True:
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main()
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if Elf.deaths == 0:
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print("yay")
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break
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Elf.power += 1
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print("oh no :(, trying", Elf.power)
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154
Day16/Day16A.c
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154
Day16/Day16A.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <inttypes.h>
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typedef struct {
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uint8_t before[4];
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uint8_t opcode;
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uint8_t a, b, c;
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uint8_t after[4];
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} Sample;
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int sample_read(Sample *sample, FILE *file) {
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int read = 0;
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read +=
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fscanf(file,
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"Before: [%" SCNu8 ", %" SCNu8 ", %" SCNu8 ", %" SCNu8 "]\n",
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&sample->before[0], &sample->before[1], &sample->before[2],
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&sample->before[3]);
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read += fscanf(file, "%" SCNu8 " %" SCNu8 " %" SCNu8 " %" SCNu8 "\n",
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&sample->opcode, &sample->a, &sample->b, &sample->c);
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read +=
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fscanf(file,
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"After: [%" SCNu8 ", %" SCNu8 ", %" SCNu8 ", %" SCNu8 "]\n\n",
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&sample->after[0], &sample->after[1], &sample->after[2],
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&sample->after[3]);
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return read == 12;
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}
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void sample_print(const Sample sample) {
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printf(
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"{\n"
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" before: [%d, %d, %d, %d],\n"
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" opcode: %d, a: %d, b: %d, c: %d,\n"
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" after: [%d, %d, %d, %d]\n"
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"}\n",
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sample.before[0], sample.before[1], sample.before[2], sample.before[3],
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sample.opcode, sample.a, sample.b, sample.c,
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sample.after[0], sample.after[1], sample.after[2], sample.after[3]
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);
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}
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int sample_possible_opcodes(const Sample s) {
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int possible_opcodes = 0;
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// Addition
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if (s.after[s.c] == s.before[s.a] + s.before[s.b]) {
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printf("addr, ");
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possible_opcodes += 1;
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}
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if (s.after[s.c] == s.before[s.a] + s.b) {
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printf("addi, ");
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possible_opcodes += 1;
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}
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// Multiplication
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if (s.after[s.c] == s.before[s.a] * s.before[s.b]) {
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printf("mulr, ");
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possible_opcodes += 1;
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}
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if (s.after[s.c] == s.before[s.a] * s.b) {
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printf("muli, ");
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possible_opcodes += 1;
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}
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// Bitwise AND
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if (s.after[s.c] == (s.before[s.a] & s.before[s.b])) {
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printf("banr, ");
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possible_opcodes += 1;
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}
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if (s.after[s.c] == (s.before[s.a] & s.b)) {
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printf("bani, ");
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possible_opcodes += 1;
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}
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// Bitwise OR
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if (s.after[s.c] == (s.before[s.a] | s.before[s.b])) {
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printf("borr, ");
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possible_opcodes += 1;
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}
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if (s.after[s.c] == (s.before[s.a] | s.b)) {
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printf("bori, ");
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possible_opcodes += 1;
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}
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// Assignment
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if (s.after[s.c] == s.before[s.a]) {
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printf("setr, ");
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possible_opcodes += 1;
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}
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if (s.after[s.c] == s.a) {
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printf("seti, ");
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possible_opcodes += 1;
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}
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// Greater-than testing
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if (s.after[s.c] == (s.a > s.before[s.b])) {
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printf("gtir, ");
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possible_opcodes += 1;
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}
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if (s.after[s.c] == (s.before[s.a] > s.b)) {
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printf("gtri, ");
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possible_opcodes += 1;
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}
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if (s.after[s.c] == (s.before[s.a] > s.before[s.b])) {
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printf("gtrr, ");
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possible_opcodes += 1;
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}
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// Equality testing
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if (s.after[s.c] == (s.a == s.before[s.b])) {
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printf("eqir, ");
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possible_opcodes += 1;
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}
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if (s.after[s.c] == (s.before[s.a] == s.b)) {
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printf("eqri, ");
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possible_opcodes += 1;
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}
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if (s.after[s.c] == (s.before[s.a] == s.before[s.b])) {
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printf("eqrr, ");
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possible_opcodes += 1;
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}
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return possible_opcodes;
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}
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int main(int argc, char **argv) {
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if (argc != 2) {
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printf("Usage: %s [input]\n", argv[0]);
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return EXIT_FAILURE;
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}
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FILE *file = fopen(argv[1], "r");
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Sample sample = {0};
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int gt3 = 0, samples = 0;
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while (sample_read(&sample, file)) {
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sample_print(sample);
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int possible_opcodes = sample_possible_opcodes(sample);
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printf("%d possible opcodes.\n\n", possible_opcodes);
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if (possible_opcodes >= 3) {
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gt3 += 1;
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}
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samples += 1;
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}
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printf("%d samples\n", samples);
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printf("%d\n", gt3);
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fclose(file);
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return EXIT_SUCCESS;
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}
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194
Day16/Day16B.c
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194
Day16/Day16B.c
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@ -0,0 +1,194 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include <assert.h>
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typedef struct {
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uint8_t opcode;
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uint32_t a, b, c;
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} Instruction;
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typedef struct {
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uint32_t before[4];
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Instruction instruction;
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uint32_t after[4];
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} Sample;
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enum {
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ADDR, ADDI, MULR, MULI,
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BANR, BANI, BORR, BORI,
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SETR, SETI, GTIR, GTRI,
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GTRR, EQIR, EQRI, EQRR,
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};
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const char *names[] = {
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"addr", "addi", "mulr", "muli",
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"banr", "bani", "borr", "bori",
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"setr", "seti", "gtir", "gtri",
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"gtrr", "eqir", "eqri", "eqrr",
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};
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uint16_t table[16] = {
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0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
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0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
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0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
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0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
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};
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int opcodes[16];
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int sample_read(Sample *s, FILE *file) {
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int read = 0;
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read =
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fscanf(file, "Before: [%u, %u, %u, %u]\n",
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&s->before[0], &s->before[1], &s->before[2], &s->before[3]);
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if (read != 4) return 0;
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Instruction *i = &s->instruction;
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read = fscanf(file, "%" SCNu8 " %u %u %u\n",
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&i->opcode, &i->a, &i->b, &i->c);
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if (read != 4) return 0;
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read =
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fscanf(file, "After: [%u, %u, %u, %u]\n\n",
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&s->after[0], &s->after[1], &s->after[2], &s->after[3]);
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if (read != 4) return 0;
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return 1;
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}
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uint16_t sample_possible_opcodes(const Sample s) {
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uint16_t possible_opcodes = 0;
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Instruction i = s.instruction;
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// Addition
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if (s.after[i.c] == s.before[i.a] + s.before[i.b]) possible_opcodes |= 1 << ADDR;
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if (s.after[i.c] == s.before[i.a] + i.b) possible_opcodes |= 1 << ADDI;
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// Multiplication
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if (s.after[i.c] == s.before[i.a] * s.before[i.b]) possible_opcodes |= 1 << MULR;
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if (s.after[i.c] == s.before[i.a] * i.b) possible_opcodes |= 1 << MULI;
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// Bitwise AND
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if (s.after[i.c] == (s.before[i.a] & s.before[i.b])) possible_opcodes |= 1 << BANR;
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if (s.after[i.c] == (s.before[i.a] & i.b)) possible_opcodes |= 1 << BANI;
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// Bitwise OR
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if (s.after[i.c] == (s.before[i.a] | s.before[i.b])) possible_opcodes |= 1 << BORR;
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if (s.after[i.c] == (s.before[i.a] | i.b)) possible_opcodes |= 1 << BORI;
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// Assignment
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if (s.after[i.c] == s.before[i.a]) possible_opcodes |= 1 << SETR;
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if (s.after[i.c] == i.a) possible_opcodes |= 1 << SETI;
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// Greater-than testing
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if (s.after[i.c] == (i.a > s.before[i.b])) possible_opcodes |= 1 << GTIR;
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if (s.after[i.c] == (s.before[i.a] > i.b)) possible_opcodes |= 1 << GTRI;
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if (s.after[i.c] == (s.before[i.a] > s.before[i.b])) possible_opcodes |= 1 << GTRR;
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// Equality testing
|
||||
if (s.after[i.c] == (i.a == s.before[i.b])) possible_opcodes |= 1 << EQIR;
|
||||
if (s.after[i.c] == (s.before[i.a] == i.b)) possible_opcodes |= 1 << EQRI;
|
||||
if (s.after[i.c] == (s.before[i.a] == s.before[i.b])) possible_opcodes |= 1 << EQRR;
|
||||
|
||||
return possible_opcodes;
|
||||
}
|
||||
|
||||
int bits_set(uint16_t n) {
|
||||
int bit = -1;
|
||||
for (int i = 0; i < 16; i++) {
|
||||
if ((n >> i) & 1) {
|
||||
if (bit != -1) return -1;
|
||||
bit = i;
|
||||
}
|
||||
}
|
||||
return bit;
|
||||
}
|
||||
|
||||
void find_opcodes() {
|
||||
int unknown = 16;
|
||||
while (unknown > 0) {
|
||||
for (int opcode = 0; opcode < 16; opcode++) {
|
||||
int bit = bits_set(table[opcode]);
|
||||
if (bit == -1) continue;
|
||||
|
||||
// Set every row in this column to 0
|
||||
for (int j = 0; j < 16; j++)
|
||||
table[j] &= ~(1 << bit);
|
||||
|
||||
opcodes[opcode] = bit;
|
||||
unknown -= 1;
|
||||
}
|
||||
}
|
||||
|
||||
for (int i = 0; i < 16; i++) {
|
||||
printf("%d: %s\n", i, names[opcodes[i]]);
|
||||
}
|
||||
}
|
||||
|
||||
int instruction_read(Instruction *i, FILE *file) {
|
||||
return fscanf(file, "%" SCNu8 " %u %u %u\n",
|
||||
&i->opcode, &i->a, &i->b, &i->c) == 4;
|
||||
}
|
||||
|
||||
void instruction_execute(const Instruction *i, uint32_t *r) {
|
||||
switch (opcodes[i->opcode]) {
|
||||
// Addition
|
||||
case ADDR: r[i->c] = r[i->a] + r[i->b]; break;
|
||||
case ADDI: r[i->c] = r[i->a] + i->b; break;
|
||||
|
||||
// Multiplication
|
||||
case MULR: r[i->c] = r[i->a] * r[i->b]; break;
|
||||
case MULI: r[i->c] = r[i->a] * i->b; break;
|
||||
|
||||
// Bitwise AND
|
||||
case BANR: r[i->c] = (r[i->a] & r[i->b]); break;
|
||||
case BANI: r[i->c] = (r[i->a] & i->b); break;
|
||||
|
||||
// Bitwise OR
|
||||
case BORR: r[i->c] = (r[i->a] | r[i->b]); break;
|
||||
case BORI: r[i->c] = (r[i->a] | i->b); break;
|
||||
|
||||
// Assignment
|
||||
case SETR: r[i->c] = r[i->a]; break;
|
||||
case SETI: r[i->c] = i->a; break;
|
||||
|
||||
// Greater-than testing
|
||||
case GTIR: r[i->c] = (i->a > r[i->b]); break;
|
||||
case GTRI: r[i->c] = (r[i->a] > i->b); break;
|
||||
case GTRR: r[i->c] = (r[i->a] > r[i->b]); break;
|
||||
|
||||
// Equality testing
|
||||
case EQIR: r[i->c] = (i->a == r[i->b]); break;
|
||||
case EQRI: r[i->c] = (r[i->a] == i->b); break;
|
||||
case EQRR: r[i->c] = (r[i->a] == r[i->b]); break;
|
||||
|
||||
default: assert(0);
|
||||
}
|
||||
}
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
if (argc != 2) {
|
||||
printf("Usage: %s [input]\n", argv[0]);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
FILE *file = fopen(argv[1], "r");
|
||||
Sample sample = {0};
|
||||
|
||||
while (sample_read(&sample, file)) {
|
||||
uint16_t possible_opcodes = sample_possible_opcodes(sample);
|
||||
table[sample.instruction.opcode] &= possible_opcodes;
|
||||
}
|
||||
find_opcodes();
|
||||
|
||||
uint32_t registers[4] = {0};
|
||||
Instruction instruction = {0};
|
||||
while (instruction_read(&instruction, file)) {
|
||||
const char *name = names[opcodes[instruction.opcode]];
|
||||
printf("opcode: %2d (%s), a: %d, b: %d, c: %d\n", instruction.opcode,
|
||||
name, instruction.a, instruction.b, instruction.c);
|
||||
instruction_execute(&instruction, registers);
|
||||
printf("registers: %d %d %d %d\n", registers[0], registers[1],
|
||||
registers[2], registers[3]);
|
||||
}
|
||||
|
||||
fclose(file);
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
Loading…
Reference in a new issue