結果
問題 | No.416 旅行会社 |
ユーザー |
|
提出日時 | 2023-01-04 17:31:53 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 464 ms / 4,000 ms |
コード長 | 4,579 bytes |
コンパイル時間 | 4,040 ms |
コンパイル使用メモリ | 264,304 KB |
最終ジャッジ日時 | 2025-02-09 23:14:42 |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 21 |
ソースコード
#include <bits/stdc++.h>#include <atcoder/all>using namespace atcoder;using namespace std;using mint = modint998244353;using C = complex<double>;const int mod = 998244353;const long long LINF = 1001002003004005006;const int INF = 1001001001;const double PI = acos(-1);const double EPS = 1e-10;const int di[4] = {-1,0,1,0};const int dj[4] = {0,-1,0,1};const int dx[8] = {1,1,1,0,0,-1,-1,-1};const int dy[8] = {1,0,-1,1,-1,1,0,-1};# define sz(x) (int)(x).size()# define rsz(x,n) x.resize(n)# define yosupo(x) {cout << (x) << endl; return 0;}# define ll long long# define fi first# define se second# define pb push_back# define pf push_front# define eb emplace_back# define ef emplace_front# define pob pop_back# define pof pop_front# define GET_MACRO(_1, _2, _3, NAME, ...) NAME# define _rep(i, n) _rep2(i, 0, n)# define _rep2(i, a, b) for(int i = (int)(a); i < (int)(b); i++)# define rep(...) GET_MACRO(__VA_ARGS__, _rep2, _rep)(__VA_ARGS__)# define srep(i, a, b) for(int i = a; i <= b; ++i)# define all(obj) (obj).begin(), (obj).end()# define rall(obj) (obj).rbegin(), (obj).rend()inline void YesNo(bool f) { std::cout << (f? "Yes": "No") << std::endl; }void read() {}template <typename T, class... U> void read(T &t, U &...u) { cin >> t; read(u...); }void writeln() { cout << endl; }template <typename T, class... U, char sep = ' '> void writeln(const T &t, const U &...u) { cout << t; if (sizeof...(u)) cout << sep; writeln(u...);}# define Pll pair<ll, ll># define P pair<int,int># define bit(x,i) (((x) >> (i)) & 1)# define equals(a, b) (fabs((a) - (b)) < EPS) // 誤差を考慮した同値判定template<class T>bool chmax(T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }template<class T>bool chmin(T &a, const T &b) { if (b < a) { a = b; return 1; } return 0; }template<typename T>istream& operator>>(istream&i,vector<T>&v){rep(j,v.size())i>>v[j];return i;}template<typename T>string join(vector<T>&v){stringstream s;rep(i,v.size())s<<' '<<v[i];return s.str().substr(1);}template<typename T>ostream& operator<<(ostream&o,vector<T>&v){if(v.size())o<<join(v);return o;}template<typename T>ostream& operator<<(ostream&o,vector<vector<T>>&vv){if(vv.size())o<<join(vv);return o;}template <class T, class U> ostream& operator<<(ostream& os, const pair<T, U>& p) { return os << "P(" << p.first << " " << p.second << ")";}template<typename T> using vc = vector<T>;template<typename T> using vv = vc<vc<T>>;using vi = vc<int>; using vvi = vv<int>;using vl = vc<ll>; using vvl = vv<ll>;using vm = vc<mint>; using vvm = vv<mint>;struct UnionFind {vector<int> par;vector<vector<int>> group;UnionFind() {}UnionFind(int n) : par(n, -1) , group(n){}void init(int n) {par.assign(n, -1);rep(i,n) group[i].pb(i);}int root(int x) {if (par[x] < 0) return x;else return par[x] = root(par[x]);}bool same(int x, int y) {return root(x) == root(y);}bool merge(int x, int y) {int px = root(x); int py = root(y);if (px == py) return false;if (par[px] > par[py]) swap(px, py); // merge techniquegroup[px].insert(group[px].end(),group[py].begin(),group[py].end());group[py].clear();par[px] += par[py];par[py] = px;return true;}int size(int x) {return -par[root(x)];}vector<int> set(int i) {return group[root(i)];}};int main() {int n,m,q;read(n,m,q);set<P> edge;rep(i,m) {int u,v;read(u,v);--u;--v;edge.insert(P(u,v));}vector<pair<int,int>> query;rep(i,q) {int u,v;read(u,v);--u;--v;edge.erase(P(u,v));query.push_back(make_pair(u,v));}reverse(all(query));UnionFind uf(n);uf.init(n);for(auto[u,v] : edge) uf.merge(u,v);vector<int> ans(n,0);rep(i,n) if(uf.same(0,i)) ans[i] = -1;rep(i,q) {auto[u,v] = query[i];if(!uf.same(u,v)) {if(!uf.same(0,u) && !uf.same(0,v)) {uf.merge(u,v);continue;}if(uf.same(0,u)) {for(int vv : uf.set(v)) {if(ans[vv] == 0) ans[vv] = q-i;}} else {for(int uu : uf.set(u)) {if(ans[uu] == 0) ans[uu] = q-i;}}uf.merge(u,v);}}rep(i,1,n) cout << ans[i] << '\n';}