test/yosupo-two-edge-connected-components-2.test.cpp

• View this file on GitHub
• Last update: 2025-06-17 22:20:18+02:00
• Problem: https://judge.yosupo.jp/problem/two_edge_connected_components

Depends on

• graph/connected-components/incremental-bridge-connectivity.hpp
• structure/union-find/union-find.hpp

Code

// competitive-verifier: PROBLEM https://judge.yosupo.jp/problem/two_edge_connected_components
#include <bits/stdc++.h>

#include "../graph/connected-components/incremental-bridge-connectivity.hpp"

using namespace std;

#ifdef LOCAL
#include "copypaste/debug.h"
#else
#define debug(...) 42
#endif

#define endl '\n'

struct fast_ios {
    fast_ios() {
        cin.tie(nullptr);
        ios::sync_with_stdio(false);
        cout << fixed << setprecision(10);
    };
} fast_ios_;

int main() {
#ifdef LOCAL
    freopen("./data.in", "r", stdin);
#endif

    int n, m;
    cin >> n >> m;
    IncrementalBridgeConnectivity ibc(n);
    for (int i = 0; i < m; i++) {
        int u, v;
        cin >> u >> v;
        ibc.add_edge(u, v);
    }
    vector<vector<int>> groups(n);
    for (int i = 0; i < n; i++) {
        groups[ibc.find(i)].push_back(i);
    }
    int k = 0;
    for (int i = 0; i < n; i++) {
        if ((int)groups[i].size()) k++;
    }

    cout << k << endl;
    // cout << ibc.bridge_size() + 1 << endl;
    for (int i = 0; i < n; i++) {
        if ((int)groups[i].size()) {
            cout << (int)groups[i].size();
            for (auto &u : groups[i]) {
                cout << ' ' << u;
            }
            cout << endl;
        }
    }
}

Traceback (most recent call last):
  File "/home/runner/.local/lib/python3.12/site-packages/competitive_verifier/oj_resolve/resolver.py", line 181, 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 252, in bundle
    bundler.update(path)
  File "/home/runner/.local/lib/python3.12/site-packages/competitive_verifier/oj/verify/languages/cplusplus_bundle.py", line 477, in update
    raise BundleErrorAt(
competitive_verifier.oj.verify.languages.cplusplus_bundle.BundleErrorAt: test/yosupo-two-edge-connected-components-2.test.cpp: line 9: unable to process #include in #if / #ifdef / #ifndef other than include guards

Test cases

Env	Name	Status	Elapsed	Memory
g++	example_00	AC	5 ms	4 MB
g++	example_01	AC	5 ms	4 MB
g++	example_02	AC	4 ms	4 MB
g++	large_cycle_00	AC	46 ms	11 MB
g++	max_random_00	AC	73 ms	16 MB
g++	max_random_01	AC	76 ms	16 MB
g++	max_random_02	AC	75 ms	16 MB
g++	random_1_00	AC	52 ms	11 MB
g++	random_1_01	AC	57 ms	13 MB
g++	random_1_02	AC	34 ms	6 MB
g++	random_2_00	AC	19 ms	4 MB
g++	random_2_01	AC	8 ms	4 MB
g++	random_2_02	AC	27 ms	5 MB
g++	random_2_03	AC	37 ms	5 MB
g++	random_2_04	AC	16 ms	4 MB
g++	small_random_1_00	AC	4 ms	4 MB
g++	small_random_1_01	AC	4 ms	4 MB
g++	small_random_1_02	AC	4 ms	4 MB
g++	small_random_2_00	AC	4 ms	4 MB
g++	small_random_2_01	AC	4 ms	3 MB
g++	small_random_2_02	AC	4 ms	4 MB

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