結果
問題 | No.1023 Cyclic Tour |
ユーザー | ir5 |
提出日時 | 2024-06-18 00:24:38 |
言語 | C++23(gcc13) (gcc 13.2.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 274 ms / 2,000 ms |
コード長 | 3,876 bytes |
コンパイル時間 | 2,439 ms |
コンパイル使用メモリ | 160,208 KB |
実行使用メモリ | 20,480 KB |
最終ジャッジ日時 | 2024-06-18 00:24:52 |
合計ジャッジ時間 | 13,878 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,820 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 77 ms
6,940 KB |
testcase_05 | AC | 77 ms
6,940 KB |
testcase_06 | AC | 87 ms
6,940 KB |
testcase_07 | AC | 82 ms
6,940 KB |
testcase_08 | AC | 95 ms
9,984 KB |
testcase_09 | AC | 125 ms
14,848 KB |
testcase_10 | AC | 125 ms
14,848 KB |
testcase_11 | AC | 138 ms
15,616 KB |
testcase_12 | AC | 170 ms
16,512 KB |
testcase_13 | AC | 130 ms
15,744 KB |
testcase_14 | AC | 131 ms
15,616 KB |
testcase_15 | AC | 136 ms
16,000 KB |
testcase_16 | AC | 219 ms
19,412 KB |
testcase_17 | AC | 230 ms
19,584 KB |
testcase_18 | AC | 257 ms
18,816 KB |
testcase_19 | AC | 217 ms
18,560 KB |
testcase_20 | AC | 174 ms
16,128 KB |
testcase_21 | AC | 179 ms
17,408 KB |
testcase_22 | AC | 199 ms
18,048 KB |
testcase_23 | AC | 207 ms
18,432 KB |
testcase_24 | AC | 259 ms
20,480 KB |
testcase_25 | AC | 174 ms
16,256 KB |
testcase_26 | AC | 179 ms
16,512 KB |
testcase_27 | AC | 171 ms
15,872 KB |
testcase_28 | AC | 227 ms
19,840 KB |
testcase_29 | AC | 274 ms
20,480 KB |
testcase_30 | AC | 233 ms
20,096 KB |
testcase_31 | AC | 210 ms
19,072 KB |
testcase_32 | AC | 210 ms
18,944 KB |
testcase_33 | AC | 228 ms
19,712 KB |
testcase_34 | AC | 140 ms
6,944 KB |
testcase_35 | AC | 148 ms
6,940 KB |
testcase_36 | AC | 186 ms
17,280 KB |
testcase_37 | AC | 196 ms
18,156 KB |
testcase_38 | AC | 212 ms
19,456 KB |
testcase_39 | AC | 210 ms
18,432 KB |
testcase_40 | AC | 216 ms
18,560 KB |
testcase_41 | AC | 224 ms
18,560 KB |
testcase_42 | AC | 156 ms
10,752 KB |
testcase_43 | AC | 157 ms
11,008 KB |
testcase_44 | AC | 104 ms
12,416 KB |
testcase_45 | AC | 146 ms
19,456 KB |
testcase_46 | AC | 106 ms
16,000 KB |
testcase_47 | AC | 102 ms
12,672 KB |
testcase_48 | AC | 191 ms
17,012 KB |
testcase_49 | AC | 177 ms
16,716 KB |
testcase_50 | AC | 181 ms
16,944 KB |
testcase_51 | AC | 151 ms
9,052 KB |
testcase_52 | AC | 158 ms
10,212 KB |
ソースコード
#include <algorithm> #include <cassert> #include <cstdio> #include <cstdlib> #include <cstring> #include <cmath> #include <iostream> #include <numeric> #include <vector> #include <map> #include <set> #include <queue> #include <functional> #include <iomanip> using namespace std; using ll = long long; class range {private: struct I{int x;int operator*(){return x;}bool operator!=(I& lhs){return x<lhs.x;}void operator++(){++x;}};I i,n; public:range(int n_):i({0}),n({n_}){}range(int i_,int n_):i({i_}),n({n_}){}I& begin(){return i;}I& end(){return n;}}; template<class T, class U> ostream& operator<<(ostream& os, const pair<T, U>& p){ return os << "{" << p.first << ", " << p.second << "}"; } template<typename T> ostream& operator<<(ostream& os, const vector<T>& obj) { os << "{"; for (const auto& e : obj) os << e << ", "; return os << "}"; } template<typename T> ostream& operator<<(ostream& os, const set<T>& obj) { os << "set{"; for (const auto& e : obj) os << e << ", "; return os << "}"; } template<typename T, typename U> ostream& operator<<(ostream& os, const map<T, U>& obj) { os << "map{"; for (const auto& e : obj) os << e << ", "; return os << "}"; } #ifdef ONLINE_JUDGE #define dump(expr) ; #else #define dump(expr) { cerr << "\033[33m#L" << __LINE__ << ": " << expr << "\033[39m" << endl; } #endif struct E { int fr, to, c; E(int fr_, int to_, int c_) : fr(fr_), to(to_), c(c_) {} friend ostream &operator<<(ostream &os, const E &e) { os << "(" << e.fr << " -> " << e.to << ")"; return os; } }; typedef vector<E> V; // typedef vector<V> G; // note that each vertex will have both enterning edges & entered edges void add_edge(vector<V> &vg, int fr, int to) { vg[fr].push_back(E(fr, to, 0)); vg[to].push_back(E(fr, to, 0)); } struct StronglyConnectedComponents { vector<char> visited; vector<int> t_order; vector<int> comp; int n_comps; StronglyConnectedComponents() {} // normal topological sort void dfs1(vector<V> &vg, int id, int &k) { visited[id] = true; for (auto it : vg[id]) if (it.fr == id && !visited[it.to]) dfs1(vg, it.to, k); t_order[--k] = id; } // dfs of reverse order void dfs2(vector<V> &vg, int id, int &k) { visited[id] = true; for (auto it : vg[id]) if (it.to == id && !visited[it.fr]) dfs2(vg, it.fr, k); comp[id] = k; // foreach vertex "id", return the topological order } void exec(vector<V> &vg) { int n = (int)vg.size(), k = n; // 1st dfs visited.assign(n, 0); t_order.assign(n, 0); comp.assign(n, 0); for (int j : range(n)) if (!visited[j]) dfs1(vg, j, k); // 2nd dfs visited.assign(n, 0); for (int i : range(n)) { int j = t_order[i]; if (!visited[j]) dfs2(vg, j, k), k++; } n_comps = k; } }; struct UF { vector<int> data; UF(int n) : data(n, -1) {} int root(int x) { return data[x] < 0 ? x : data[x] = root(data[x]); } bool find(int x, int y) { return root(x) == root(y); } void uni(int x, int y) { x = root(x); y = root(y); if (x != y) { if (data[x] < data[y]) swap(x, y); data[x] += data[y]; data[y] = x; } } }; ll solve() { int n, m; cin >> n >> m; vector<int> as(m), bs(m), cs(m); for (int i : range(m)) cin >> as[i] >> bs[i] >> cs[i]; UF uf(n + 1); for (int i : range(m)) if (cs[i] == 1) { if (uf.find(as[i], bs[i])) return 1; uf.uni(as[i], bs[i]); } vector<V> vg(n + 1); for (int i : range(m)) if (cs[i] == 2) { int a = uf.root(as[i]); int b = uf.root(bs[i]); if (a == b) return 1; add_edge(vg, a, b); } StronglyConnectedComponents scc; scc.exec(vg); map<int, int> sizes; for (int i : range(n + 1)) sizes[scc.comp[i]]++; for (auto p : sizes) if (p.second > 1) return 1; return 0; } int main() { cout << fixed << setprecision(12); cout << (solve() ? "Yes" : "No") << endl; }