TestCase/LibraryChecker/shortest_path.test.py

• View this file on GitHub
• Last update: 2022-01-22 18:47:07+09:00
• Problem: https://judge.yosupo.jp/problem/shortest_path

Depends on

• ダイクストラ法 ($O((E + V)\log V)$) + 経路復元 (Graph/ShortestPath/dijkstra_trace.py)

Code

# verification-helper: PROBLEM https://judge.yosupo.jp/problem/shortest_path
import sys
input = sys.stdin.buffer.readline

from Graph.ShortestPath.dijkstra_trace import dijkstra, trace_route


def main():
    n, m, s, t = map(int, input().split())
    edges = [list(map(int, input().split())) for i in range(m)]
    INF = 10 ** 18

    graph = [[] for i in range(n)]
    edge_idx = {}
    for i, (u, v, cost) in enumerate(edges):
        graph[u].append((v, cost))

    dist, parent = dijkstra(s, graph)
    path = trace_route(t, parent)

    if not path:
        print(-1)
    else:
        es = []
        for u, v in zip(path, path[1:]):
            es.append((u, v))
        print(dist[t], len(es))
        for res in es:
            print(*res)

if __name__ == '__main__':
    main()

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.12.4/x64/lib/python3.12/site-packages/onlinejudge_verify/documentation/build.py", line 71, in _render_source_code_stat
    bundled_code = language.bundle(stat.path, basedir=basedir, options={'include_paths': [basedir]}).decode()
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.12.4/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/python.py", line 96, in bundle
    raise NotImplementedError
NotImplementedError

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