結果
| 問題 | No.2569 はじめてのおつかいHard | 
| コンテスト | |
| ユーザー |  prd_xxx | 
| 提出日時 | 2023-12-02 16:36:58 | 
| 言語 | PyPy3 (7.3.15) | 
| 結果 | 
                                AC
                                 
                             | 
| 実行時間 | 870 ms / 2,000 ms | 
| コード長 | 1,403 bytes | 
| コンパイル時間 | 194 ms | 
| コンパイル使用メモリ | 82,556 KB | 
| 実行使用メモリ | 144,096 KB | 
| 最終ジャッジ日時 | 2025-06-20 01:55:59 | 
| 合計ジャッジ時間 | 8,881 ms | 
| ジャッジサーバーID (参考情報) | judge4 / judge5 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 2 | 
| other | AC * 12 | 
ソースコード
import sys
input = sys.stdin.readline
N,M = map(int,input().split())
UVT = [tuple(map(int,input().split())) for _ in range(M)]
es = [[] for _ in range(N)]
rs = [[] for _ in range(N)]
for u,v,t in UVT:
    u,v = u-1,v-1
    es[v].append((u,t))
    rs[u].append((v,t))
A,B = N-1,N-2
INF = 10**18
from heapq import heappop,heappush
hq = [(0,A)]
distA = [INF] * N
distA[A] = 0
while hq:
    d,v = heappop(hq)
    if d > distA[v]: continue
    for to,c in es[v]:
        if distA[to] <= d+c: continue
        distA[to] = d+c
        heappush(hq, (d+c, to))
hq = [(0,B)]
distB = [INF] * N
distB[B] = 0
while hq:
    d,v = heappop(hq)
    if d > distB[v]: continue
    for to,c in es[v]:
        if distB[to] <= d+c: continue
        distB[to] = d+c
        heappush(hq, (d+c, to))
hq = [(0,A)]
rdistA = [INF] * N
rdistA[A] = 0
while hq:
    d,v = heappop(hq)
    if d > rdistA[v]: continue
    for to,c in rs[v]:
        if rdistA[to] <= d+c: continue
        rdistA[to] = d+c
        heappush(hq, (d+c, to))
hq = [(0,B)]
rdistB = [INF] * N
rdistB[B] = 0
while hq:
    d,v = heappop(hq)
    if d > rdistB[v]: continue
    for to,c in rs[v]:
        if rdistB[to] <= d+c: continue
        rdistB[to] = d+c
        heappush(hq, (d+c, to))
for i in range(N-2):
    ans1 = rdistA[i] + distA[B] + distB[i]
    ans2 = rdistB[i] + distB[A] + distA[i]
    ans = min(ans1, ans2)
    print(-1 if ans >= INF else ans)
            
            
            
        