Graph/warshall_floyd.py

• View this file on GitHub
• Last update: 2022-03-23 20:17:58+09:00

Code

# warshall_floyd法
def warshall_floyd() -> list:
    for k in range(n):
        for i in range(n):
            for j in range(n):
                dist[i][j] = min(dist[i][j], dist[i][k] + dist[k][j])

    return dist

INF = 10 ** 20
n, m = map(int,input().split()) # 頂点数・辺の数

dist = [[INF] * n for _ in range(n)] # 隣接行列の初期化

# 自分自身へのコストは 0
for i in range(n):
    dist[i][i] = 0

# 与えられた距離の初期化
for i in range(m):
    x, y, r = map(int,input().split())
    dist[x - 1][y - 1] = r
    dist[y - 1][x - 1] = r

# sからtへの最短距離を求める
ans = warshall_floyd()

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.12.3/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/3.12.3/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/python.py", line 96, in bundle
    raise NotImplementedError
NotImplementedError

Back to top page