https://codeiq.jp/ace/yuki_hiroshi/q411
https://codeiq.jp/achievement/34
・ Ce n'était pas un problème pour trouver l'itinéraire le plus court ・ En raison de la nature du problème de recherche du prochain vol direct à l'aide de WebAPI, nous prévoyons qu'un grand nombre de branches se cachent et effectuons la taille suivante.
Ce que j'ai fait était vraiment simple.
star-flight.py
'''
Created on 2013/07/31
@author: nubilum
'''
import urllib2
import time
import os.path
limit = 5
start = 5426528869786
deep = 4363616111476
deeper = 5092488161056
deepest = 8838746292440
goal_points = [start, deep, deeper, deepest]
cache_path = 'cache.txt'
cache = {}
already = {}
def search(start, goal):
global cache
global already
load_cache()
now = start
queue = []
idx = 0
counter = 0
queue.append([[start]])
while True:
current = []
routes_list = queue[idx]
for routes in routes_list:
print routes
last = routes[-1]
if last in cache:
pathes = cache[last]
for path in pathes:
if path == 0:
break
if path in already:
continue
already[path] = 1
next = routes[:]
next.append(path)
current.append(next)
if path == goal:
return next
else:
next_pathes = []
for i in xrange(0, 100):
response = get_response(last, i)
counter += 1
if response == 0:
break
if response in already:
continue
already[response] = 1
next_pathes.append(response)
next = routes[:]
next.append(response)
current.append(next)
if response == goal:
return next
if counter % limit == 0:
time.sleep(0.1)
write_cache(last, next_pathes)
now = next
queue.append(current)
idx += 1
def write_cache(start, path):
global cache_path
f = open(cache_path, "a")
f.write(str(start) + ":" + ','.join([ str(p) for p in path ]) + "\n")
f.close()
def load_cache():
global cache
global cache_path
if os.path.exists(cache_path) ==False:
return
f = open(cache_path, "r")
data = f.read()
f.close()
for line in data.split('\n'):
if line == '': continue
start, path = line.split(':')
cache[int(start)] = [int(p) if len(p) > 0 else 0 for p in path.split(',')]
def get_response(id, nth):
response = urllib2.urlopen('http://133.242.134.37/deepest.cgi?id=%d&nth=%d' % (id, nth))
return int(response.read().rstrip('rn'))
def main():
global goal_points
result = []
for i in xrange(0, len(goal_points) - 1):
answer_routes = search(goal_points[i], goal_points[i + 1])
print "answer:", answer_routes
for point in answer_routes:
result.append(point)
print ",".join([str(p) for p in result])
print "ENV: Python"
if __name__ == '__main__':
main()
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