85 lines
2.2 KiB
Python
85 lines
2.2 KiB
Python
import re
|
|
from tracemalloc import start
|
|
import numpy as np
|
|
|
|
|
|
list_of_nodes = []
|
|
|
|
|
|
|
|
# f = open('test.txt', 'r')
|
|
f = open('input.txt', 'r')
|
|
content = f.read()
|
|
lines = content.splitlines()
|
|
|
|
my_grid = np.array(lines)
|
|
|
|
universe_list = []
|
|
|
|
for line_count, line in enumerate(lines):
|
|
# finds = line.find_all("#")
|
|
# for find in finds:
|
|
# locations.append([line_count, find])
|
|
line_list = []
|
|
for ch in line:
|
|
line_list.append(int(ch))
|
|
|
|
universe_list.append(line_list)
|
|
|
|
universe = np.array(universe_list)
|
|
W = len(universe[0])
|
|
H = len(universe[1])
|
|
|
|
VISITED = {}
|
|
|
|
best = 10000000
|
|
|
|
finished = False
|
|
list_of_nodes.append([[0,0],[1,0],0])
|
|
list_of_nodes.append([[0,0],[0,1],0])
|
|
while not finished:
|
|
print("Cycle")
|
|
min_node = list_of_nodes.pop(0)
|
|
for i in range(3):
|
|
#change direction
|
|
if i >= 1-1:
|
|
for j in [-1,1]:
|
|
dir = [j*min_node[1][1], j*min_node[1][0]]
|
|
pos = [min_node[0][0] + dir[0], min_node[0][1] + dir[1]]
|
|
if pos[0] >= 0 and pos[0] < W and pos[1] >= 0 and pos[1] < H:
|
|
heat = min_node[2] + universe[pos[0]][pos[1]]
|
|
key = (*pos, *dir)
|
|
if (key in VISITED and VISITED[key] <= heat):
|
|
continue
|
|
else:
|
|
list_of_nodes.append([pos, dir, heat])
|
|
if pos == [W-1, H-1]:
|
|
if heat < best:
|
|
best = heat
|
|
VISITED[key] = heat
|
|
|
|
min_node[0] = [min_node[0][0] + min_node[1][0], min_node[0][1] + min_node[1][1]]
|
|
if min_node[0][0] >= 0 and min_node[0][0] < W and min_node[0][1] >= 0 and min_node[0][1] < H:
|
|
min_node[2] = min_node[2] + universe[min_node[0][0]][min_node[0][1]]
|
|
if min_node[0] == [W-1, H-1]:
|
|
if min_node[2] < best:
|
|
best = min_node[2]
|
|
else:
|
|
break
|
|
|
|
list_of_nodes.sort(key = lambda x: x[2])
|
|
finished = (len(list_of_nodes) == 0 or list_of_nodes[0][0] == [W-1, H-1])
|
|
|
|
print(best)
|
|
# print(universe)
|
|
print(list_of_nodes[0][2])
|
|
# print(VISITED[(W-1, H-1, 0,1)])
|
|
# print(VISITED[(W-1, H-1, 1,0)])
|
|
sum = 0
|
|
|
|
|
|
|
|
|
|
|
|
f.close()
|