結果
| 問題 |
No.1293 2種類の道路
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-05-09 21:02:45 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 66 ms / 2,000 ms |
| コード長 | 5,082 bytes |
| コンパイル時間 | 4,218 ms |
| コンパイル使用メモリ | 320,312 KB |
| 実行使用メモリ | 27,984 KB |
| 最終ジャッジ日時 | 2025-05-09 21:02:53 |
| 合計ジャッジ時間 | 7,213 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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
// competitive-verifier: PROBLEM
#ifdef ATCODER
#pragma GCC target("sse4.2,avx512f,avx512dq,avx512ifma,avx512cd,avx512bw,avx512vl,bmi2")
#endif
#pragma GCC optimize("Ofast,fast-math,unroll-all-loops")
#include <bits/stdc++.h>
#ifndef ATCODER
#pragma GCC target("sse4.2,avx2,bmi2")
#endif
template <class T, class U>
constexpr bool chmax(T &a, const U &b) {
return a < (T)b ? a = (T)b, true : false;
}
template <class T, class U>
constexpr bool chmin(T &a, const U &b) {
return (T)b < a ? a = (T)b, true : false;
}
constexpr std::int64_t INF = 1000000000000000003;
constexpr int Inf = 1000000003;
constexpr double EPS = 1e-7;
constexpr double PI = 3.14159265358979323846;
#define FOR(i, m, n) for (int i = (m); i < int(n); ++i)
#define FORR(i, m, n) for (int i = (m)-1; i >= int(n); --i)
#define FORL(i, m, n) for (int64_t i = (m); i < int64_t(n); ++i)
#define rep(i, n) FOR (i, 0, n)
#define repn(i, n) FOR (i, 1, n + 1)
#define repr(i, n) FORR (i, n, 0)
#define repnr(i, n) FORR (i, n + 1, 1)
#define all(s) (s).begin(), (s).end()
struct Sonic {
Sonic() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
std::cout << std::fixed << std::setprecision(20);
}
constexpr void operator()() const {}
} sonic;
using namespace std;
using ll = std::int64_t;
using ld = long double;
template <class T, class U>
std::istream &operator>>(std::istream &is, std::pair<T, U> &p) {
return is >> p.first >> p.second;
}
template <class T>
std::istream &operator>>(std::istream &is, std::vector<T> &v) {
for (T &i : v) is >> i;
return is;
}
template <class T, class U>
std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &p) {
return os << '(' << p.first << ',' << p.second << ')';
}
template <class T>
std::ostream &operator<<(std::ostream &os, const std::vector<T> &v) {
for (auto it = v.begin(); it != v.end(); ++it) os << (it == v.begin() ? "" : " ") << *it;
return os;
}
template <class Head, class... Tail>
void co(Head &&head, Tail &&...tail) {
if constexpr (sizeof...(tail) == 0) std::cout << head << '\n';
else std::cout << head << ' ', co(std::forward<Tail>(tail)...);
}
template <class Head, class... Tail>
void ce(Head &&head, Tail &&...tail) {
if constexpr (sizeof...(tail) == 0) std::cerr << head << '\n';
else std::cerr << head << ' ', ce(std::forward<Tail>(tail)...);
}
void Yes(bool is_correct = true) { std::cout << (is_correct ? "Yes\n" : "No\n"); }
void No(bool is_not_correct = true) { Yes(!is_not_correct); }
void YES(bool is_correct = true) { std::cout << (is_correct ? "YES\n" : "NO\n"); }
void NO(bool is_not_correct = true) { YES(!is_not_correct); }
void Takahashi(bool is_correct = true) { std::cout << (is_correct ? "Takahashi" : "Aoki") << '\n'; }
void Aoki(bool is_not_correct = true) { Takahashi(!is_not_correct); }
/**
* @brief 素集合データ構造
* @details Implement (union by size) + (path compression)
* @see https://github.com/atcoder/ac-library/blob/master/atcoder/dsu.hpp
*/
struct union_find {
union_find() = default;
explicit union_find(int _n) : _rank(_n), data(_n, -1) {}
const int &operator[](std::size_t x) const { return data[x]; }
int &operator[](std::size_t x) { return data[x]; }
int root(int x) { return data[x] < 0 ? x : data[x] = root(data[x]); }
int get_root(int x) { return root(x); }
bool is_root(int x) const { return data[x] < 0; }
bool same(int x, int y) { return root(x) == root(y); }
bool is_same(int x, int y) { return same(x, y); }
int rank() { return _rank; }
int size(int x) { return -(data[root(x)]); }
int get_size(int x) { return size(x); }
std::vector<int> leaders() {
std::vector<int> res;
for (int i = 0; i < (int)data.size(); ++i) {
if (is_root(i)) res.emplace_back(i);
}
return res;
}
bool unite(int x, int y) {
x = root(x), y = root(y);
if (x == y) return false;
--_rank;
if (data[x] > data[y]) std::swap(x, y);
data[x] += data[y];
data[y] = x;
return true;
}
template <class F>
bool unite(int x, int y, F f) {
x = root(x), y = root(y);
if (x != y) {
if (data[x] > data[y]) std::swap(x, y);
data[x] += data[y];
data[y] = x;
}
f(x, y);
return x != y;
}
private:
int _rank;
std::vector<int> data;
};
int main(void) {
int n, d, w;
cin >> n >> d >> w;
union_find uf1(n), uf2(n);
rep (i, d) {
int u, v;
cin >> u >> v;
--u, --v;
uf1.unite(u, v);
}
rep (j, w) {
int u, v;
cin >> u >> v;
--u, --v;
uf2.unite(u, v);
}
unordered_map<int, int> mp;
vector<unordered_set<int>> v(n);
rep (i, n) {
if (v[uf1.root(i)].count(uf2.root(i)))
continue;
mp[uf1.root(i)] += uf2.size(i);
v[uf1.root(i)].emplace(uf2.root(i));
}
ll ans = 0;
rep (i, n) {
ans += mp[uf1.root(i)];
}
co(ans - n);
return 0;
}