test/yosupo/tree/lowest_common_ancestor.test.cpp

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• Last update: 2025-06-10 13:56:45+09:00
• Problem: https://judge.yosupo.jp/problem/lca

Depends on

• 重み付きグラフ (lib/graph/graph.hpp)
• lib/internal/internal_csr.hpp
• HL分解 (lib/tree/hld.hpp)

Code

// competitive-verifier: PROBLEM https://judge.yosupo.jp/problem/lca
#include <iostream>
#include <vector>
#include "tree/hld.hpp"

int main(void) {
    int n, q;
    std::cin >> n >> q;
    std::vector<int> p(n - 1);
    for (auto &e : p) std::cin >> e;
    Graph<void> g(n);
    for (int i = 0; i < n - 1; ++i) g.add_edges(p[i], i + 1);
    heavy_light_decomposition hld(g);
    while (q--) {
        int u, v;
        std::cin >> u >> v;
        std::cout << hld.lca(u, v) << '\n';
    }

    return 0;
}

Traceback (most recent call last):
  File "/home/runner/.local/lib/python3.12/site-packages/competitive_verifier/oj/resolver.py", line 291, in resolve
    bundled_code = language.bundle(path, basedir=basedir)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/.local/lib/python3.12/site-packages/competitive_verifier/oj/verify/languages/cplusplus.py", line 242, in bundle
    bundler.update(path)
  File "/home/runner/.local/lib/python3.12/site-packages/competitive_verifier/oj/verify/languages/cplusplus_bundle.py", line 479, in update
    self._resolve(pathlib.Path(included), included_from=path)
  File "/home/runner/.local/lib/python3.12/site-packages/competitive_verifier/oj/verify/languages/cplusplus_bundle.py", line 286, in _resolve
    raise BundleErrorAt(path, -1, "no such header")
competitive_verifier.oj.verify.languages.cplusplus_bundle.BundleErrorAt: tree/hld.hpp: line -1: no such header

Test cases

Env	Name	Status	Elapsed	Memory
g++	almost_line_00	AC	1134 ms	49 MB
g++	almost_line_01	AC	1183 ms	49 MB
g++	binary_00	AC	1458 ms	50 MB
g++	binary_01	AC	1366 ms	50 MB
g++	binary_02	AC	1359 ms	50 MB
g++	example_00	AC	2 ms	4 MB
g++	line_00	AC	865 ms	37 MB
g++	line_01	AC	886 ms	43 MB
g++	line_02	AC	690 ms	8 MB
g++	line_03	AC	184 ms	40 MB
g++	line_04	AC	271 ms	27 MB
g++	max_line_00	AC	1087 ms	46 MB
g++	max_line_01	AC	1046 ms	46 MB
g++	max_line_02	AC	1055 ms	46 MB
g++	max_random_00	AC	1346 ms	49 MB
g++	max_random_01	AC	1405 ms	49 MB
g++	max_random_02	AC	1378 ms	49 MB
g++	path_graph_root_centroid_00	AC	1092 ms	46 MB
g++	path_graph_root_centroid_01	AC	1089 ms	46 MB
g++	path_graph_root_centroid_02	AC	1091 ms	46 MB
g++	random_00	AC	1096 ms	39 MB
g++	random_01	AC	1143 ms	46 MB
g++	random_02	AC	741 ms	8 MB
g++	random_03	AC	353 ms	43 MB
g++	random_04	AC	361 ms	29 MB

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