test/yosupo/graph/strongly_connected_components.test.cpp

• View this file on GitHub
• Last update: 2025-06-10 13:56:45+09:00
• Problem: https://judge.yosupo.jp/problem/scc

Depends on

• 重み付きグラフ (lib/graph/graph.hpp)
• 強連結成分分解 (lib/graph/scc.hpp)
• lib/internal/internal_csr.hpp

Code

// competitive-verifier: PROBLEM https://judge.yosupo.jp/problem/scc
#include <algorithm>
#include <iostream>
#include <vector>
#include "graph/scc.hpp"

int main(void) {
    int n, m;
    std::cin >> n >> m;
    Graph<void> g(n);
    g.input_edge(m, 0);
    auto v = scc(g);
    std::vector<std::vector<int>> ans(*std::max_element(v.begin(), v.end()) + 1);
    for (int i = 0; i < n; ++i) ans[v[i]].emplace_back(i);
    std::cout << ans.size() << '\n';
    for (auto &&u : ans) {
        std::cout << u.size();
        for (auto &e : u) std::cout << ' ' << e;
        std::cout << '\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: graph/scc.hpp: line -1: no such header

Test cases

Env	Name	Status	Elapsed	Memory
g++	example_00	AC	3 ms	4 MB
g++	large_cycle_00	AC	313 ms	71 MB
g++	max_random_00	AC	459 ms	55 MB
g++	max_random_01	AC	451 ms	55 MB
g++	max_random_02	AC	447 ms	55 MB
g++	max_random_03	AC	459 ms	55 MB
g++	max_random_04	AC	442 ms	55 MB
g++	random_00	AC	343 ms	44 MB
g++	random_01	AC	394 ms	50 MB
g++	random_02	AC	186 ms	19 MB
g++	random_03	AC	90 ms	39 MB
g++	random_04	AC	128 ms	29 MB

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