結果
問題 | No.1812 Uribo Road |
ユーザー | MasKoaTS |
提出日時 | 2021-12-31 12:24:43 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 4,551 ms / 5,000 ms |
コード長 | 1,641 bytes |
コンパイル時間 | 364 ms |
コンパイル使用メモリ | 81,920 KB |
実行使用メモリ | 240,820 KB |
最終ジャッジ日時 | 2024-10-08 05:47:27 |
合計ジャッジ時間 | 18,326 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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 | 42 ms
52,992 KB |
testcase_01 | AC | 41 ms
52,736 KB |
testcase_02 | AC | 59 ms
64,512 KB |
testcase_03 | AC | 210 ms
81,152 KB |
testcase_04 | AC | 42 ms
52,480 KB |
testcase_05 | AC | 42 ms
53,376 KB |
testcase_06 | AC | 45 ms
53,888 KB |
testcase_07 | AC | 91 ms
76,416 KB |
testcase_08 | AC | 245 ms
78,124 KB |
testcase_09 | AC | 315 ms
79,268 KB |
testcase_10 | AC | 235 ms
78,232 KB |
testcase_11 | AC | 219 ms
78,136 KB |
testcase_12 | AC | 1,731 ms
103,904 KB |
testcase_13 | AC | 668 ms
91,424 KB |
testcase_14 | AC | 666 ms
90,544 KB |
testcase_15 | AC | 1,132 ms
133,064 KB |
testcase_16 | AC | 1,207 ms
92,464 KB |
testcase_17 | AC | 3,110 ms
206,280 KB |
testcase_18 | AC | 1,207 ms
179,460 KB |
testcase_19 | AC | 3,182 ms
214,016 KB |
testcase_20 | AC | 3,873 ms
232,448 KB |
testcase_21 | AC | 3,276 ms
231,712 KB |
testcase_22 | AC | 4,551 ms
240,820 KB |
testcase_23 | AC | 297 ms
79,804 KB |
testcase_24 | AC | 67 ms
69,120 KB |
testcase_25 | AC | 195 ms
79,948 KB |
testcase_26 | AC | 191 ms
78,592 KB |
testcase_27 | AC | 1,129 ms
174,880 KB |
testcase_28 | AC | 509 ms
87,360 KB |
testcase_29 | AC | 41 ms
52,736 KB |
testcase_30 | AC | 299 ms
81,152 KB |
testcase_31 | AC | 2,121 ms
162,808 KB |
testcase_32 | AC | 174 ms
78,180 KB |
testcase_33 | AC | 442 ms
88,448 KB |
ソースコード
#ダイクストラ高速化弱め import heapq import sys input = sys.stdin.readline INF = 10 ** 18 N,M,K = map(int,input().split()) R = set([i-1 for i in map(int,input().split())]) lR = list(R) route = [[] for _ in [0]*N] edge = [0]*M st = set([0,N-1]) for i in range(M): A,B,C = map(int,input().split()) A -= 1; B -= 1 if(i in R): edge[i] = [A,B,C] st.add(A); st.add(B) route[A].append((B,C)) route[B].append((A,C)) def dijkstra(route,start,finish,n): path = [-1]*n q = [(0,start)] while(q): d,v = heapq.heappop(q) if(path[v] == -1): path[v] = d if(v == finish): break for nv,dist in route[v]: heapq.heappush(q,(d+dist,nv)) return path[finish] ans = INF rsum = sum(edge[i][2] for i in R) dist = {} dp = [[[INF] * 2 for _ in [0] * K] for _ in [0] * (1 << K)] for i in range(K): for j in range(2): p = edge[lR[i]][j] if((0,p) not in dist): dist[(0,p)] = dist[(p,0)] = dijkstra(route,0,p,N) dp[1 << i][i][j] = rsum + dist[(0,p)] for bit in range(1, 1 << K): for s in range(K): if not(bit & (1 << s)): continue for i in range(2): for t in range(K): if not(bit & (1 << t)): b = bit | (1 << t) for j in range(2): p = edge[lR[s]][i]; q = edge[lR[t]][j] if((p,q) not in dist): dist[(p,q)] = dist[(q,p)] = dijkstra(route,p,q,N) d = dp[bit][s][i ^ 1] + dist[(p,q)] if(dp[b][t][j] > d): dp[b][t][j] = d ans = INF for i in range(K): for j in range(2): p = edge[lR[i]][j]; q = N - 1 if((p,q) not in dist): dist[(p,q)] = dist[(q,p)] = dijkstra(route,p,q,N) d = dp[-1][i][j ^ 1] + dist[(p,q)] if(ans > d): ans = d print(ans)