結果
問題 |
No.807 umg tours
|
ユーザー |
![]() |
提出日時 | 2019-03-22 23:22:54 |
言語 | PyPy3 (7.3.15) |
結果 |
MLE
|
実行時間 | - |
コード長 | 1,966 bytes |
コンパイル時間 | 345 ms |
コンパイル使用メモリ | 82,176 KB |
実行使用メモリ | 852,480 KB |
最終ジャッジ日時 | 2024-09-19 06:57:48 |
合計ジャッジ時間 | 5,108 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
other | AC * 11 MLE * 1 -- * 14 |
ソースコード
import sys import copy import collections N,M=map(int,sys.stdin.readline().rstrip().split()) d=[[0 for j in range(N+1)] for i in range(N+1)] for i in range(M): a,b,c=map(int,sys.stdin.readline().rstrip().split()) d[a][b]=d[b][a]=c inf=1<<60 #現在地、ゴール、コスト、チケット利用回数、履歴 def solve0(location, goal, cost, ticket, history): cost2 = inf #print('solve', location, goal, cost, ticket) history2 = copy.copy(history) history2.add(location) if location==goal: return cost for i in range(1,N+1): if d[location][i]==0: continue if i in history2: continue cost2=min(cost2,solve(i,goal,cost+d[location][i],ticket,history2)) if ticket==0: cost2=min(cost2,solve(i,goal,cost,1,history2)) return cost2 def solve(location, goal, cost, ticket, history): q = collections.deque() q.append((location, cost, ticket, history)) cost2 = inf lcost=[inf for i in range(N+1)] try: while True: location, cost, ticket, history = q.popleft() #print('solve', location, cost, ticket, history) if lcost[location]<location: continue if location==goal: cost2=min(cost2,cost) continue lcost[location]=location if cost >= cost2: continue history2 = copy.copy(history) history2.add(location) for i in range(1,N+1): if d[location][i]==0: continue if i in history2: continue if ticket==0: q.append((i, cost, 1, history2)) q.append((i, cost+d[location][i], ticket, history2)) except IndexError: pass return cost2 for i in range(1,N+1): ans=solve(1, i, 0, 0, set()) + solve(1, i, 0, 1, set()) print(ans)