結果
問題 | No.416 旅行会社 |
ユーザー |
|
提出日時 | 2018-10-23 16:22:34 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 452 ms / 4,000 ms |
コード長 | 3,720 bytes |
コンパイル時間 | 2,227 ms |
コンパイル使用メモリ | 189,612 KB |
実行使用メモリ | 19,976 KB |
最終ジャッジ日時 | 2024-12-14 20:33:15 |
合計ジャッジ時間 | 7,677 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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>using namespace std;/* macro */#define rep(i,a,b) for(int i=a;i<b;i++)#define revrep(i,a,b) for(int i = a; i > b; i--)#define int long long#define exist(s,e) ((s).find(e)!=(s).end())#define all(v) (v).begin(), (v).end()#define each(s,itr) for(auto (itr) = s.begin(); (itr) != s.end(); (itr)++)#define sum(v) accumulate(all(v), (0LL))#define mp(a, b) make_pair(a, b)/* alias */template<class T> using vec = vector<T>;typedef vector<int> vi;typedef pair<int, int> pi;/* constant */const int inf = 1001001001;const int mod = 1e6;int dx[8]={1,0,-1,0,-1,1,-1,1};int dy[8]={0,1,0,-1,-1,-1,1,1};/* io_method */int input(){int tmp;cin >> tmp;return tmp;}string raw_input(){string tmp;cin >> tmp;return tmp;}string readline(){string s;getline(cin, s);return s;}template<class T> void printx(T n){cout << n;}template<class T, class U> void printx(pair<T, U> p){cout << "(" << p.first << "," << p.second << ")";}template<class T> void printx(vector<T> v){cout << "{";rep(i,0,v.size()){printx(v[i]);if(i != v.size()-1)printx(",");}cout << "}";}template<class T> void print(T n){printx(n);cout << endl;}template<class T> void print(set<T> s){cout << "{";each(s, e){if(e != s.begin()) printx(",");printx(*e);}cout << "}" << endl;}template<class T, class U> void print(map<T, U> mp){cout << "{";each(mp, e){cout << "(" << e -> first << "," << e -> second << ")";}cout << "}" <<endl;}/* general_method */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; }/* main */struct quick_find{vector<vector<int> > g2i;vector<int> i2g;quick_find(int n){g2i.resize(n, vector<int>());i2g.resize(n);rep(i,0,n) {g2i[i].push_back(i);i2g[i] = i;}}void merge(int a, int b){if(root(a) == root(b)) return;if(g2i[root(a)].size() < g2i[root(b)].size()) swap(a, b);int ra = root(a), rb = root(b);for(int e : g2i[rb]) i2g[e] = ra;g2i[ra].insert(g2i[ra].end(), g2i[rb].begin(), g2i[rb].end());g2i[rb].clear();}bool issame(int a, int b){return i2g[a] == i2g[b];}int root(int a){return i2g[a];}};signed main(){cin.tie(0);ios::sync_with_stdio(false);int n, m, q; cin >> n >> m >> q;set<pi> s;rep(i,0,m){int f, t; cin >> f >> t; f--; t--;s.insert(mp(f, t));}vec<pi> broken;rep(i,0,q){int f, t; cin >> f >> t; f--; t--;broken.push_back(mp(f,t));s.erase(mp(f, t));}reverse(all(broken));vi ans(n,0);quick_find qf = quick_find(n);each(s, itr){pi a = *itr;qf.merge(a.first, a.second);}for(auto e : qf.g2i[qf.root(0)]) ans[e] = -1;rep(i,0,q){int a = broken[i].first, b = broken[i].second;if(not qf.issame(a, b)){if((not qf.issame(0, a)) && (not qf.issame(0, b))){qf.merge(a, b);continue;}if(qf.issame(0, a)){for(auto e : qf.g2i[qf.root(b)]){if(ans[e] == 0) ans[e] = q - i;}}else{for(auto e : qf.g2i[qf.root(a)]){if(ans[e] == 0) ans[e] = q - i;}}qf.merge(a, b);}}rep(i,1,n){print(ans[i]);}}