結果
問題 | No.2536 同値性と充足可能性 |
ユーザー |
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提出日時 | 2023-11-10 23:12:50 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 134 ms / 2,000 ms |
コード長 | 1,999 bytes |
コンパイル時間 | 2,332 ms |
コンパイル使用メモリ | 209,088 KB |
最終ジャッジ日時 | 2025-02-17 21:24:25 |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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ファイルパターン | 結果 |
---|---|
other | AC * 31 |
ソースコード
#include <bits/stdc++.h>using namespace std;using ll = long long;int main(){int N, M, x, y;cin >> N >> M;vector<vector<pair<int, int>>> E(N);vector<int> color(N, -1);vector<vector<int>> bb, ww;vector<int> b, w;string S;vector<pair<int, int>> a, c;for (int i=0; i<M; i++){cin >> x >> S >> y; x--; y--;if (S == "<==>") a.push_back({x, y});else c.push_back({x, y});}//同じfor (auto [x, y] : a){E[x].push_back({y, 1});E[y].push_back({x, 1});}for (auto [x, y] : c){E[x].push_back({y, -1});E[y].push_back({x, -1});}auto dfs=[&](auto self, int from, int c)->void{if (c == 1) b.push_back(from);else w.push_back(from);for (auto [to, tp] : E[from]){if (color[to] != -1){if (tp == 1 && color[to] != color[from]){cout << "No" << endl;exit(0);}else if (tp == -1 && color[to] == color[from]){cout << "No" << endl;exit(0);}else continue;}if (tp == 1) color[to] = c;else color[to] = 1-c;self(self, to, color[to]);}};for (int i=0; i<N; i++){if (color[i] == -1){color[i] = 0;dfs(dfs, i, 0);bb.push_back(b);ww.push_back(w);b.clear(); w.clear();}}vector<int> ans;for (int i=0; i<bb.size(); i++){if (bb[i].size() > ww[i].size()){for (auto x : bb[i]) ans.push_back(x);}else{for (auto x : ww[i]) ans.push_back(x);}}cout << "Yes" << endl;sort(ans.begin(), ans.end());cout << ans.size() << endl;for (int i=0; i<ans.size()-1; i++) cout << ans[i]+1 << " ";cout << ans.back()+1 << endl;return 0;}