This documentation is automatically generated by online-judge-tools/verification-helper
ベルマンフォードです.
$edges = [(from1, to1, cost1), (from2, to2, cost2), …)]$の形式で辺情報を与えてください
inf は十分に大きい値を適当に設定してください
dist = bellmanFord(n, edges, s, inf=1 << 60)
負閉路がある場合は None を返します.
def bellmanFord(n, edges, s, inf=1 << 60):
"""
edges = [(from1, to1, cost1), (from2, to2, cost2), ...)]
"""
dist = [inf] * n
dist[s] = 0
for _ in range(n):
update = False
for u, v, d in edges:
if dist[u] != inf and dist[v] > dist[u] + d:
dist[v] = dist[u] + d
update = True
if not update:
return dist
return None
Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.11.4/x64/lib/python3.11/site-packages/onlinejudge_verify/documentation/build.py", line 81, in _render_source_code_stat
bundled_code = language.bundle(
^^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.11.4/x64/lib/python3.11/site-packages/onlinejudge_verify/languages/python.py", line 108, in bundle
raise NotImplementedError
NotImplementedError