結果
問題 | No.1023 Cyclic Tour |
ユーザー | haruki_K |
提出日時 | 2020-04-10 22:05:17 |
言語 | C++14 (gcc 13.2.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 114 ms / 2,000 ms |
コード長 | 6,882 bytes |
コンパイル時間 | 3,914 ms |
コンパイル使用メモリ | 183,436 KB |
実行使用メモリ | 29,216 KB |
最終ジャッジ日時 | 2023-10-14 00:38:05 |
合計ジャッジ時間 | 11,333 ms |
ジャッジサーバーID (参考情報) |
judge15 / judge11 |
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 | 1 ms
4,348 KB |
testcase_01 | AC | 2 ms
4,348 KB |
testcase_02 | AC | 2 ms
4,348 KB |
testcase_03 | AC | 2 ms
4,352 KB |
testcase_04 | AC | 29 ms
6,564 KB |
testcase_05 | AC | 29 ms
6,452 KB |
testcase_06 | AC | 32 ms
6,852 KB |
testcase_07 | AC | 30 ms
6,720 KB |
testcase_08 | AC | 52 ms
18,912 KB |
testcase_09 | AC | 60 ms
18,416 KB |
testcase_10 | AC | 57 ms
18,700 KB |
testcase_11 | AC | 65 ms
19,152 KB |
testcase_12 | AC | 69 ms
22,108 KB |
testcase_13 | AC | 67 ms
20,732 KB |
testcase_14 | AC | 66 ms
20,736 KB |
testcase_15 | AC | 70 ms
21,060 KB |
testcase_16 | AC | 112 ms
24,232 KB |
testcase_17 | AC | 112 ms
24,352 KB |
testcase_18 | AC | 114 ms
23,484 KB |
testcase_19 | AC | 113 ms
23,184 KB |
testcase_20 | AC | 64 ms
15,204 KB |
testcase_21 | AC | 65 ms
15,576 KB |
testcase_22 | AC | 78 ms
16,992 KB |
testcase_23 | AC | 84 ms
17,612 KB |
testcase_24 | AC | 100 ms
22,116 KB |
testcase_25 | AC | 63 ms
15,340 KB |
testcase_26 | AC | 64 ms
15,072 KB |
testcase_27 | AC | 61 ms
14,592 KB |
testcase_28 | AC | 96 ms
20,952 KB |
testcase_29 | AC | 101 ms
22,888 KB |
testcase_30 | AC | 96 ms
20,948 KB |
testcase_31 | AC | 87 ms
19,984 KB |
testcase_32 | AC | 92 ms
20,812 KB |
testcase_33 | AC | 91 ms
20,260 KB |
testcase_34 | AC | 49 ms
8,792 KB |
testcase_35 | AC | 53 ms
8,776 KB |
testcase_36 | AC | 70 ms
16,068 KB |
testcase_37 | AC | 83 ms
18,772 KB |
testcase_38 | AC | 94 ms
21,196 KB |
testcase_39 | AC | 82 ms
18,308 KB |
testcase_40 | AC | 84 ms
18,676 KB |
testcase_41 | AC | 84 ms
18,812 KB |
testcase_42 | AC | 64 ms
15,252 KB |
testcase_43 | AC | 76 ms
21,672 KB |
testcase_44 | AC | 36 ms
13,184 KB |
testcase_45 | AC | 78 ms
29,216 KB |
testcase_46 | AC | 79 ms
29,108 KB |
testcase_47 | AC | 35 ms
13,388 KB |
testcase_48 | AC | 64 ms
15,948 KB |
testcase_49 | AC | 64 ms
15,652 KB |
testcase_50 | AC | 63 ms
15,544 KB |
testcase_51 | AC | 60 ms
15,736 KB |
testcase_52 | AC | 62 ms
15,516 KB |
ソースコード
// >>> TEMPLATES #include <bits/stdc++.h> using namespace std; using ll = long long; using ld = long double; using i32 = int32_t; using i64 = int64_t; #define int ll #define double ld #define rep(i,n) for (int i = 0; i < (int)(n); i++) #define rep1(i,n) for (int i = 1; i <= (int)(n); i++) #define repR(i,n) for (int i = (int)(n)-1; i >= 0; i--) #define rep1R(i,n) for (int i = (int)(n); i >= 1; i--) #define loop(i,a,B) for (int i = a; i B; i++) #define loopR(i,a,B) for (int i = a; i B; i--) #define all(x) (x).begin(), (x).end() #define allR(x) (x).rbegin(), (x).rend() #define pb push_back #define eb emplace_back #define mp make_pair #define fst first #define snd second auto constexpr INF32 = numeric_limits<int32_t>::max()/2-1; auto constexpr INF64 = numeric_limits<int64_t>::max()/2-1; auto constexpr INF = numeric_limits<int>::max()/2-1; #ifdef LOCAL #include "debug.hpp" #define dump(...) cerr << "[" << setw(3) << __LINE__ << ":" << __FUNCTION__ << "] ", dump_impl(#__VA_ARGS__, __VA_ARGS__) #define say(x) cerr << "[" << __LINE__ << ":" << __FUNCTION__ << "] " << x << endl #define debug if (1) #else #define dump(...) (void)(0) #define say(x) (void)(0) #define debug if (0) #endif template <class T> using pque_max = priority_queue<T>; template <class T> using pque_min = priority_queue<T, vector<T>, greater<T> >; template <class T, class = typename T::iterator, class = typename enable_if<!is_same<T, string>::value>::type> ostream& operator<<(ostream& os, T const& v) { bool f = true; for (auto const& x : v) os << (f ? "" : " ") << x, f = false; return os; } template <class T, class = typename T::iterator, class = typename enable_if<!is_same<T, string>::value>::type> istream& operator>>(istream& is, T &v) { for (auto& x : v) is >> x; return is; } template <class T, class S> istream& operator>>(istream& is, pair<T,S>& p) { return is >> p.first >> p.second; } struct IOSetup { IOSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } } iosetup; template <class F> struct FixPoint : private F { constexpr FixPoint(F&& f) : F(forward<F>(f)) {} template <class... T> constexpr auto operator()(T&&... x) const { return F::operator()(*this, forward<T>(x)...); } }; struct MakeFixPoint { template <class F> constexpr auto operator|(F&& f) const { return FixPoint<F>(forward<F>(f)); } }; #define MFP MakeFixPoint()| #define def(name, ...) auto name = MFP [&](auto &&name, __VA_ARGS__) template <class T, size_t d> struct vec_impl { using type = vector<typename vec_impl<T,d-1>::type>; template <class... U> static type make_v(size_t n, U&&... x) { return type(n, vec_impl<T,d-1>::make_v(forward<U>(x)...)); } }; template <class T> struct vec_impl<T,0> { using type = T; static type make_v(T const& x = {}) { return x; } }; template <class T, size_t d = 1> using vec = typename vec_impl<T,d>::type; template <class T, size_t d = 1, class... Args> auto make_v(Args&&... args) { return vec_impl<T,d>::make_v(forward<Args>(args)...); } template <class T> void quit(T const& x) { cout << x << endl; exit(0); } template <class T, class U> constexpr bool chmin(T& x, U const& y) { if (x > y) { x = y; return true; } return false; } template <class T, class U> constexpr bool chmax(T& x, U const& y) { if (x < y) { x = y; return true; } return false; } template <class It> constexpr auto sumof(It b, It e) { return accumulate(b,e,typename iterator_traits<It>::value_type{}); } template <class T> int sz(T const& x) { return x.size(); } template <class C, class T> int lbd(C const& v, T const& x) { return lower_bound(v.begin(), v.end(), x)-v.begin(); } template <class C, class T> int ubd(C const& v, T const& x) { return upper_bound(v.begin(), v.end(), x)-v.begin(); } template <class C, class F> int ppt(C const& v, F f) { return partition_point(v.begin(), v.end(), f)-v.begin(); } // <<< // >>> union find struct UnionFind { int n, sz; // id : 0...n-1 vector<int> par; UnionFind(int n = 0) : n(n), sz(n), par(n,-1) { } int root(int x) { assert(0 <= x); assert(x < n); return par[x] < 0 ? x : par[x] = root(par[x]); } bool unite(int x, int y) { x = root(x), y = root(y); if (x == y) return false; sz--; if (par[x] < par[y]) swap(x,y); par[y] += par[x]; par[x] = y; return true; } bool same(int x, int y) { return root(x) == root(y); } int size(int x) { return -par[root(x)]; } int size() const { return sz; } struct groups_t { vector<vector<int> > grp; vector<pair<int,int> > id; }; groups_t groups() { vector<vector<int> > g(n); rep (i,n) if (par[i] < 0) g[i].reserve(-par[i]); rep (i,n) g[root(i)].push_back(i); vector<vector<int> > grp; grp.reserve(size()); rep (i,n) if (g[i].size()) grp.emplace_back(move(g[i])); vector<pair<int,int> > id(n); rep (i,grp.size()) rep (j,grp[i].size()) { id[grp[i][j]] = make_pair(i,j); } return { grp, id }; } }; // <<< // >>> scc constexpr int dst(int v) { return v; } template <class E, class = decltype(E().to)> constexpr int dst(E const& e) { return e.to; } template <class E> struct SCC { vector<vector<E> > const& g; vector<int32_t> ord, low, st; int32_t time = 0, pos = 0, sz = 0; SCC(vector<vector<E> > const& g) : g(g), ord(g.size()), low(g.size()), st(g.size()) { rep (v,g.size()) if (ord[v] == 0) dfs(v); for (auto &x : ord) x += sz; } void dfs(int v) { low[v] = ord[v] = ++time; st[pos++] = v; for (auto const& e : g[v]) { if (ord[dst(e)] == 0) { dfs(dst(e)); chmin(low[v], low[dst(e)]); } else if (ord[dst(e)] > 0) { chmin(low[v], ord[dst(e)]); } } if (low[v] == ord[v]) { sz++; do ord[st[--pos]] = -sz; while (st[pos] != v); } } int size() const { return sz; } int id(int v) const { return ord[v]; } vector<vector<int> > groups() const { vector<vector<int> > grp(sz); rep (v,g.size()) grp[ord[v]].push_back(v); return grp; } }; template <class E> auto get_scc(vector<vector<E> > const& g) { return SCC<E>(g); } // <<< int32_t main() { int n,m; cin >> n >> m; vector<int> a(m),b(m),c(m); rep (i,m) cin >> a[i] >> b[i] >> c[i], --a[i],--b[i]; UnionFind uf(n); rep (i,m) if (c[i] == 1) { if (uf.same(a[i],b[i])) quit("Yes"); uf.unite(a[i],b[i]); } auto grp = uf.groups(); vector<vector<int>> g(uf.size()); rep (i,m) if (c[i] == 2) { int x = grp.id[a[i]].fst; int y = grp.id[b[i]].fst; if (x == y) quit("Yes"); g[x].eb(y); } auto scc = get_scc(g); cout << (scc.size() < sz(g) ? "Yes" : "No") << endl; }