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#!/usr/bin/env python3
# import numpy as np
from functools import reduce
from re import findall
from copy import deepcopy
import sys
# filename = "in/day22.ref"
filename = "in/day22.pzl"
data = open(filename).read()
lines = [line for line in data.rstrip('\n').split('\n')]
# print(lines)
res2 = 0
y_len = len(lines) - 2 + 2
x_len = max([len(lines[i]) for i in range(y_len-2)]) + 2
# print(y_len)
# print(x_len)
A = [ [' ' for x in range(x_len)] for y in range(y_len)]
for y,line in enumerate(lines[:-2]):
for x, val in enumerate(line):
A[y+1][x+1] = val
# for line in A:
# for char in line:
# print(char, end='')
# print()
ops_s = lines[-1]
i = 0
ops = list()
while i < len(ops_s):
find_r = ops_s.find('R',i)
find_l = ops_s.find('L',i)
if find_r == -1 and find_l == -1:
ops.append(int(ops_s[i:]))
break
elif find_r == -1:
lr = 'L'
nxt = find_l
elif find_l == -1:
lr = 'R'
nxt = find_r
elif find_l < find_r:
lr = 'L'
nxt = find_l
else:
lr = 'R'
nxt = find_r
ops.append(int(ops_s[i:nxt]))
ops.append(lr)
i = nxt+1
# print(ops)
def wrap(A, z, d):
new_z = z
new_d = -d
while A[int(new_z.imag)][int(new_z.real)] != ' ':
new_z += new_d
new_z += d
if A[int(new_z.imag)][int(new_z.real)] == '#':
# print('unsuccessful wrap from', z)
return z, d
else:
# print('wrapping to', new_z)
return new_z, d
def solve(part):
d = 1
z = 1 + 1j
while A[int(z.imag)][int(z.real)] != '.':
z += 1
# print(z)
for op in ops:
# print(op)
if type(op) == int:
for i in range(op):
new_z = z + d
val = A[int(new_z.imag)][int(new_z.real)]
if val == '.':
z = new_z
elif val == '#':
# print('hit #')
break
else:
if part == 1:
z, d = wrap(A, z, d)
elif part == 2:
z, d = wrap2(A, z, d)
# print('z', z)
elif type(op) == str:
if op == 'R':
d *= 1j
elif op == 'L':
d *= -1j
# print(op, z, d, new_z)
# print()
res = 0
res += 1000*int(z.imag)
res += 4*int(z.real)
if d == 1:
res += 0
elif d == 1j:
res += 1
elif d == -1:
res += 2
elif d == -1j:
res += 3
return res
# len
# L = 4
# # tiles
# T = dict()
# T['a'] = 9 + 1j
# T['b'] = 1 + 5j
# T['c'] = 5 + 5j
# T['d'] = 9 + 5j
# T['e'] = 9 + 9j
# T['f'] = 13 + 9j
# # edges
# E = dict()
# E[('a',1+0j)] = ('f',-1+0j)
# E[('a',-1+0j)] = ('c',1j)
# E[('a',-1j)] = ('b',1j)
# E[('b', 1j)] = ('e',-1j)
# E[('b',-1+0j)] = ('f',-1j)
# E[('b',-1j)] = ('a',1j)
# E[('c', 1j)] = ('e',1+0j)
# E[('c',-1j)] = ('a',1+0j)
# E[('d',1+0j)] = ('f',1j)
# E[('e', 1j)] = ('b',-1j)
# E[('e',-1+0j)] = ('c',-1j)
# E[('f', 1+0j)] = ('a',-1)
# E[('f', 1j)] = ('b',1+0j)
# E[('f',-1j)] = ('d',-1)
# len
L = 50
# tiles
T = dict()
T['a'] = 51 + 1j
T['b'] = 101 + 1j
T['c'] = 51 + 51j
T['d'] = 1 + 101j
T['e'] = 51 + 101j
T['f'] = 1 + 151j
# edges
E = dict()
# E[(' ', 1+0j)] = (' ',1j)
# E[(' ', 0+1j)] = (' ',1j)
# E[(' ',-1+0j)] = (' ',1j)
# E[(' ', 0-1j)] = (' ',1j)
E[('a',-1+0j)] = ('d',1)
E[('a', 0-1j)] = ('f',1)
E[('b', 1+0j)] = ('e',-1)
E[('b', 0+1j)] = ('c',-1)
E[('b', 0-1j)] = ('f',-1j)
E[('c', 1+0j)] = ('b',-1j)
E[('c',-1+0j)] = ('d',1j)
E[('d',-1+0j)] = ('a',1)
E[('d', 0-1j)] = ('c',1)
E[('e', 1+0j)] = ('b',-1)
E[('e', 0+1j)] = ('f',-1)
E[('f', 1+0j)] = ('e',-1j)
E[('f', 0+1j)] = ('b',1j)
E[('f',-1+0j)] = ('a',1j)
def get_tile(z):
for tile in T:
if T[tile].real <= z.real < T[tile].real+L and \
T[tile].imag <= z.imag < T[tile].imag+L:
return tile
return ' '
# for y in range(y_len):
# for x in range(x_len):
# # print(A[y][x], end='')
# z = x + 1j*y
# print(get_tile(z), end='')
# print()
# print(get_tile(9+1j))
# exit()
def wrap2(A, z, d):
tile = get_tile(z)
if (tile, d) not in E.keys():
print(z, tile, d)
assert False
# print('from tile', tile, d)
new_tile, new_d = E[(tile,d)]
# print('to tile', new_tile, new_d)
rela_z = ( ((z.real - 1)%L) )
rela_z += ( ((z.imag - 1)%L) ) *1j
# rot = new_d / d
if d == -1j:
w = rela_z.real
elif d == 1:
w = rela_z.imag
elif d == 1j:
w = L-1 - rela_z.real
elif d == -1:
w = L-1 - rela_z.imag
if new_d == 1j:
new_rela_z = L-1 - w + 0j
elif new_d == -1:
new_rela_z = (L-1) + (L-1 - w)*1j
elif new_d == -1j:
new_rela_z = w + (L-1)*1j
elif new_d == 1:
new_rela_z = 0 + w*1j
# print('w', w)
# print('new_rela_z', new_rela_z)
new_z = T[new_tile] + new_rela_z
if A[int(new_z.imag)][int(new_z.real)] == '#':
# print('unsuccessful wrap from', z)
return z, d
else:
# print('wrapping to', new_z)
return new_z, new_d
print('res1:', solve(1))
print('res2:', solve(2))
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