結果
問題 | No.1293 2種類の道路 |
ユーザー |
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提出日時 | 2020-11-28 10:03:19 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 104 ms / 2,000 ms |
コード長 | 3,974 bytes |
コンパイル時間 | 2,781 ms |
コンパイル使用メモリ | 219,240 KB |
最終ジャッジ日時 | 2025-01-16 09:14:36 |
ジャッジサーバーID (参考情報) |
judge5 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 22 |
ソースコード
#define MOD_TYPE 2 #pragma region Macros #include <bits/stdc++.h> using namespace std; #if 0 #include <boost/multiprecision/cpp_int.hpp> #include <boost/multiprecision/cpp_dec_float.hpp> using Int = boost::multiprecision::cpp_int; using lld = boost::multiprecision::cpp_dec_float_100; #endif #if 1 #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #endif using ll = long long int; using ld = long double; using pii = pair<int, int>; using pll = pair<ll, ll>; using pld = pair<ld, ld>; template <typename Q_type> using smaller_queue = priority_queue<Q_type, vector<Q_type>, greater<Q_type>>; constexpr ll MOD = (MOD_TYPE == 1 ? (ll)(1e9 + 7) : 998244353); constexpr int INF = (int)1e9 + 10; constexpr ll LINF = (ll)4e18; constexpr double PI = acos(-1.0); constexpr double EPS = 1e-7; constexpr int Dx[] = {0, 0, -1, 1, -1, 1, -1, 1, 0}; constexpr int Dy[] = {1, -1, 0, 0, -1, -1, 1, 1, 0}; #define REP(i, m, n) for (ll i = m; i < (ll)(n); ++i) #define rep(i, n) REP(i, 0, n) #define REPI(i, m, n) for (int i = m; i < (int)(n); ++i) #define repi(i, n) REPI(i, 0, n) #define MP make_pair #define MT make_tuple #define YES(n) cout << ((n) ? "YES" : "NO") << "\n" #define Yes(n) cout << ((n) ? "Yes" : "No") << "\n" #define possible(n) cout << ((n) ? "possible" : "impossible") << "\n" #define Possible(n) cout << ((n) ? "Possible" : "Impossible") << "\n" #define all(v) v.begin(), v.end() #define NP(v) next_permutation(all(v)) #define dbg(x) cerr << #x << ":" << x << "\n"; struct io_init { io_init() { cin.tie(0); ios::sync_with_stdio(false); cout << setprecision(30) << setiosflags(ios::fixed); }; } io_init; template <typename T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; } template <typename T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; } inline ll CEIL(ll a, ll b) { return (a + b - 1) / b; } template <typename A, size_t N, typename T> inline void Fill(A (&array)[N], const T &val) { fill((T *)array, (T *)(array + N), val); } template <typename T, typename U> constexpr istream &operator>>(istream &is, pair<T, U> &p) noexcept { is >> p.first >> p.second; return is; } template <typename T, typename U> constexpr ostream &operator<<(ostream &os, pair<T, U> &p) noexcept { os << p.first << " " << p.second; return os; } #pragma endregion struct UnionFind { vector<int> par; vector<vector<int>> vertex; UnionFind() {} UnionFind(int n) : par(n), vertex(n) { par.resize(n); vertex.resize(n); iota(all(par), 0); for (int i = 0; i < n; i++) vertex[i].emplace_back(i); } int root(int x) { if (x == par[x]) return x; return par[x] = root(par[x]); } // 新しい代表元を返す int unite(int x, int y) { x = root(x); y = root(y); if (x == y) return x; if (vertex[x].size() < vertex[y].size()) swap(x, y); par[y] = x; while (!vertex[y].empty()) { vertex[x].emplace_back(vertex[y].back()); vertex[y].pop_back(); } return x; } bool same(int x, int y) { return root(x) == root(y); } int size(int x) { return vertex[root(x)].size(); } vector<int> operator[](int i) { return vertex[root(i)]; } }; void solve() { int n, d, w; cin >> n >> d >> w; UnionFind uf1(n), uf2(n); rep(i, d) { int a, b; cin >> a >> b; a--, b--; uf1.unite(a, b); } rep(i, w) { int a, b; cin >> a >> b; a--, b--; uf2.unite(a, b); } bool used[100010] = {}; ll ans = 0; rep(i, n) { if (used[uf1.root(i)]) continue; used[uf1.root(i)] = true; set<int> roots; ll sz1 = uf1.size(i); ll sz2 = 0; for (auto v : uf1[i]) { roots.insert(uf2.root(v)); } for (auto r : roots) { sz2 += uf2.size(r); } ans += sz1 * sz2 - sz1; } cout << ans << "\n"; } int main() { solve(); }