結果
問題 | No.2277 Honest or Dishonest ? |
ユーザー |
![]() |
提出日時 | 2023-04-19 15:23:15 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 5,235 bytes |
コンパイル時間 | 976 ms |
コンパイル使用メモリ | 73,856 KB |
実行使用メモリ | 20,864 KB |
最終ジャッジ日時 | 2024-11-08 06:20:03 |
合計ジャッジ時間 | 8,176 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 WA * 1 |
other | AC * 19 WA * 31 |
ソースコード
#include <iostream>#include <vector>using namespace std;using Graph = vector<vector<int>>;// 深さ優先探索int seen[100010], seen2[100010];bool dfs(const Graph &G, const Graph &G_, const Graph &G2, const Graph &G2_, int v, bool HonLia) {bool flag = false; //矛盾が生じたかif (HonLia == true) seen[v] = 2;else seen[v] = 1;for (auto next_v : G[v]) {if (seen[next_v] >= 1){if (HonLia == true && seen[next_v] == 1) flag = true;if (HonLia == false && seen[next_v] == 2) flag = true;continue;}if (HonLia == true) {if (dfs(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索else {if (dfs(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索}for (auto next_v : G_[v]) {if (seen[next_v] >= 1){if (HonLia == true && seen[next_v] == 2) flag = true;if (HonLia == false && seen[next_v] == 1) flag = true;continue;}if (HonLia == true) {if (dfs(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索else {if (dfs(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索}for (auto next_v : G2[v]) {if (seen[next_v] >= 1){if (HonLia == true && seen[next_v] == 1) flag = true;if (HonLia == false && seen[next_v] == 2) flag = true;continue;}if (HonLia == true) {if (dfs(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索else {if (dfs(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索}for (auto next_v : G2_[v]) {if (seen[next_v] >= 1){if (HonLia == true && seen[next_v] == 2) flag = true;if (HonLia == false && seen[next_v] == 1) flag = true;continue;}if (HonLia == true) {if (dfs(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索else {if (dfs(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索}return flag;}bool dfs2(const Graph &G, const Graph &G_, const Graph &G2, const Graph &G2_, int v, bool HonLia) {bool flag = false; //矛盾が生じたかif (HonLia == true) seen2[v] = 2;else seen2[v] = 1;for (auto next_v : G[v]) {if (seen2[next_v] >= 1){if (HonLia == true && seen2[next_v] == 1) flag = true;if (HonLia == false && seen2[next_v] == 2) flag = true;continue;}if (HonLia == true) {if (dfs2(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索else {if (dfs2(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索}for (auto next_v : G_[v]) {if (seen2[next_v] >= 1){if (HonLia == true && seen2[next_v] == 2) flag = true;if (HonLia == false && seen2[next_v] == 1) flag = true;continue;}if (HonLia == true) {if (dfs2(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索else {if (dfs2(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索}for (auto next_v : G2[v]) {if (seen2[next_v] >= 1){if (HonLia == true && seen2[next_v] == 1) flag = true;if (HonLia == false && seen2[next_v] == 2) flag = true;continue;}if (HonLia == true) {if (dfs2(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索else {if (dfs2(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索}for (auto next_v : G2_[v]) {if (seen2[next_v] >= 1){if (HonLia == true && seen2[next_v] == 2) flag = true;if (HonLia == false && seen2[next_v] == 1) flag = true;continue;}if (HonLia == true) {if (dfs2(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索else {if (dfs2(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索}return flag;}int main() {// 頂点数と辺数int N, Q; cin >> N >> Q;// グラフ入力受取Graph G(N), G_(N), G2(N), G2_(N);for (int i = 0; i < Q; ++i) {int a, b, c;cin >> a >> b >> c;if (a == b) cout << -1 << endl;if (c == 0) G[a - 1].push_back(b - 1);if (c == 1) G_[a - 1].push_back(b - 1);if (c == 0) G2[b - 1].push_back(a - 1);if (c == 1) G2_[b - 1].push_back(a - 1);}// 全頂点が訪問済みになるまで探索long long ans = 1;for (int i = 0; i < N; i++) seen[i] = seen2[i] = 0;for (int v = 0; v < N; ++v) {if (seen[v] >= 1) continue; // v が探索済みだったらスルーlong long count = 0;if (dfs(G, G_, G2, G2_, v, true) == false) count++; // v が未探索なら v を始点とした DFS を行うif (dfs2(G, G_, G2, G2_, v, false) == false) count++; // v が未探索なら v を始点とした DFS を行うans = (ans * count) % 1000000007;}cout << ans << endl;}