結果
問題 | No.1812 Uribo Road |
ユーザー | vwxyz |
提出日時 | 2023-02-24 07:13:02 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 996 ms / 5,000 ms |
コード長 | 3,251 bytes |
コンパイル時間 | 495 ms |
コンパイル使用メモリ | 82,312 KB |
実行使用メモリ | 95,564 KB |
最終ジャッジ日時 | 2024-07-23 21:59:40 |
合計ジャッジ時間 | 12,193 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 41 ms
53,248 KB |
testcase_01 | AC | 43 ms
53,120 KB |
testcase_02 | AC | 53 ms
63,872 KB |
testcase_03 | AC | 100 ms
77,440 KB |
testcase_04 | AC | 42 ms
53,632 KB |
testcase_05 | AC | 43 ms
53,632 KB |
testcase_06 | AC | 44 ms
53,888 KB |
testcase_07 | AC | 80 ms
76,400 KB |
testcase_08 | AC | 154 ms
77,664 KB |
testcase_09 | AC | 200 ms
78,492 KB |
testcase_10 | AC | 135 ms
77,920 KB |
testcase_11 | AC | 163 ms
78,376 KB |
testcase_12 | AC | 483 ms
84,748 KB |
testcase_13 | AC | 208 ms
81,668 KB |
testcase_14 | AC | 217 ms
82,164 KB |
testcase_15 | AC | 526 ms
86,616 KB |
testcase_16 | AC | 403 ms
83,088 KB |
testcase_17 | AC | 875 ms
92,456 KB |
testcase_18 | AC | 244 ms
83,272 KB |
testcase_19 | AC | 996 ms
95,440 KB |
testcase_20 | AC | 989 ms
95,564 KB |
testcase_21 | AC | 780 ms
91,584 KB |
testcase_22 | AC | 549 ms
88,336 KB |
testcase_23 | AC | 146 ms
77,384 KB |
testcase_24 | AC | 51 ms
61,696 KB |
testcase_25 | AC | 363 ms
84,076 KB |
testcase_26 | AC | 137 ms
78,380 KB |
testcase_27 | AC | 239 ms
82,284 KB |
testcase_28 | AC | 564 ms
86,432 KB |
testcase_29 | AC | 43 ms
53,632 KB |
testcase_30 | AC | 168 ms
79,660 KB |
testcase_31 | AC | 623 ms
86,988 KB |
testcase_32 | AC | 115 ms
76,752 KB |
testcase_33 | AC | 419 ms
86,432 KB |
ソースコード
import sys readline=sys.stdin.readline import heapq class Graph: def __init__(self,V,edges=False,graph=False,directed=False,weighted=False,inf=float("inf")): self.V=V self.directed=directed self.weighted=weighted self.inf=inf if graph: self.graph=graph self.edges=[] for i in range(self.V): if self.weighted: for j,d in self.graph[i]: if self.directed or not self.directed and i<=j: self.edges.append((i,j,d)) else: for j in self.graph[i]: if self.directed or not self.directed and i<=j: self.edges.append((i,j)) else: self.edges=edges self.graph=[[] for i in range(self.V)] if weighted: for i,j,d in self.edges: self.graph[i].append((j,d)) if not self.directed: self.graph[j].append((i,d)) else: for i,j in self.edges: self.graph[i].append(j) if not self.directed: self.graph[j].append(i) def Dijkstra(self,s,route_restoration=False): dist=[self.inf]*self.V dist[s]=0 queue=[(0,s)] if route_restoration: parents=[None]*self.V while queue: dx,x=heapq.heappop(queue) if dist[x]<dx: continue for y,dy in self.graph[x]: if dist[y]>dx+dy: dist[y]=dx+dy if route_restoration: parents[y]=x heapq.heappush(queue,(dist[y],y)) if route_restoration: return dist,parents else: return dist N,M,K=map(int,readline().split()) R=list(map(int,readline().split())) for k in range(K): R[k]-=1 edges=[] inf=1<<60 for m in range(M): A,B,C=map(int,readline().split()) A-=1;B-=1 edges.append((A,B,C)) G=Graph(N,edges=edges,weighted=True) dist=[[None]*2*K for x in range(2*K)] for i in range(K): D=G.Dijkstra(edges[R[i]][0]) for j in range(K): dist[2*i][2*j]=D[edges[R[j]][1]]+edges[R[j]][2] dist[2*i][2*j+1]=D[edges[R[j]][0]]+edges[R[j]][2] D=G.Dijkstra(edges[R[i]][1]) for j in range(K): dist[2*i+1][2*j]=D[edges[R[j]][1]]+edges[R[j]][2] dist[2*i+1][2*j+1]=D[edges[R[j]][0]]+edges[R[j]][2] dp=[[inf]*2*K for bit in range(1<<K)] D=G.Dijkstra(0) for k in range(K): dp[1<<k][2*k]=D[edges[R[k]][1]]+edges[R[k]][2] dp[1<<k][2*k+1]=D[edges[R[k]][0]]+edges[R[k]][2] for bit in range(1<<K): for i in range(K): if not bit&1<<i: continue for j in range(K): if i==j: continue if not bit&1<<j: continue for ii in (2*i,2*i+1): for jj in (2*j,2*j+1): dp[bit][ii]=min(dp[bit][ii],dp[bit^1<<i][jj]+dist[jj][ii]) D=G.Dijkstra(N-1) ans=min(min(dp[-1][2*i]+D[edges[R[i]][0]] for i in range(K)),min(dp[-1][2*i+1]+D[edges[R[i]][1]] for i in range(K))) print(ans)