結果

問題 No.416 旅行会社
ユーザー snteasntea
提出日時 2016-08-27 05:08:56
言語 C++11
(gcc 11.4.0)
結果
AC  
実行時間 370 ms / 4,000 ms
コード長 5,339 bytes
コンパイル時間 2,167 ms
コンパイル使用メモリ 190,864 KB
実行使用メモリ 19,712 KB
最終ジャッジ日時 2024-12-14 20:01:07
合計ジャッジ時間 6,476 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge4
このコードへのチャレンジ
（要ログイン）

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 88 ms
12,160 KB
testcase_01 AC 2 ms
5,248 KB
testcase_02 AC 2 ms
5,248 KB
testcase_03 AC 2 ms
5,248 KB
testcase_04 AC 2 ms
5,248 KB
testcase_05 AC 1 ms
5,248 KB
testcase_06 AC 2 ms
5,248 KB
testcase_07 AC 1 ms
5,248 KB
testcase_08 AC 4 ms
5,248 KB
testcase_09 AC 14 ms
5,248 KB
testcase_10 AC 111 ms
12,160 KB
testcase_11 AC 113 ms
18,304 KB
testcase_12 AC 116 ms
18,304 KB
testcase_13 AC 95 ms
18,304 KB
testcase_14 AC 333 ms
17,664 KB
testcase_15 AC 317 ms
18,688 KB
testcase_16 AC 370 ms
19,712 KB
testcase_17 AC 362 ms
18,432 KB
testcase_18 AC 346 ms
18,048 KB
testcase_19 AC 227 ms
16,384 KB
testcase_20 AC 218 ms
15,488 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#ifdef LOCAL111
#else
	#define NDEBUG
#endif
#include <bits/stdc++.h>
const int INF = 1e8;
using namespace std;

#define endl '\n'
#define ALL(a)  (a).begin(),(a).end()
#define SZ(a) int((a).size())
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n)  FOR(i,0,n)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)
#define RBP(i,a) for(auto& i : a)
#ifdef LOCAL111
	#define DEBUG(x) cout<<#x<<": "<<(x)<<endl
	template<typename T> void dpite(T a, T b){ for(T ite = a; ite != b; ite++) cout << (ite == a ? "" : " ") << *ite; cout << endl;}
#else
	#define DEBUG(x) true
	template<typename T> void dpite(T a, T b){ return; }
#endif
#define F first
#define S second
#define SNP string::npos
#define WRC(hoge) cout << "Case #" << (hoge)+1 << ": "
#define rangej(a,b,c) ((a) <= (c) and (c) < (b))
#define rrangej(b,c) rangej(0,b,c)
template<typename T> void pite(T a, T b){ for(T ite = a; ite != b; ite++) cout << (ite == a ? "" : " ") << *ite; cout << endl;}
template<typename T> bool chmax(T& a, T b){if(a < b){a = b; return true;} return false;}
template<typename T> bool chmin(T& a, T b){if(a > b){a = b; return true;} return false;}

typedef long long int LL;
typedef unsigned long long ULL;
typedef pair<int,int> P;
typedef pair<LL,LL> LP;

void ios_init(){
	//cout.setf(ios::fixed);
	//cout.precision(12);
#ifdef LOCAL111
	return;
#endif
	ios::sync_with_stdio(false); cin.tie(0);	
}

//library
class uftree {
//private:
public:
	int *par;
	int *rank;
	int *num;

//public:
	uftree(int n)
	{
		par = new int[n];
		rank = new int[n];
		num = new int[n];
		for(int i = 0; i < n; i++){
			par[i] = i;
			rank[i] = 0;
			num[i] = 1;
		}
	}

	~uftree()
	{
		delete[] par;
		delete[] rank;
		delete[] num;
	}

	int find(int x)
	{
		if(par[x] == x){
			return x;
		}else{
			return par[x] = find(par[x]);
		}
	}

	void unite(int x, int y)
	{
		x = find(x);
		y = find(y);
		if(x == y) return;
		if(rank[x] < rank[y]){
			par[x] = y;
			num[y] += num[x];
		}else{
			par[y] = x;
			num[x] += num[y];
			if(rank[x] == rank[y])	rank[x]++;
		}
	}

	int count(int x)
	{
		return num[find(x)];
	}

	bool same(int x, int y)
	{
		return find(x) == find(y);
	}
};
//library

//library

typedef int cost_t;

class Edge {
public:
	int to;
	cost_t cost;
	
	Edge(){
	}

	Edge(int x,cost_t y){
		to = x;
		cost = y;
	}

	bool operator< (const Edge& x) const {
		return cost < x.cost;
	}

	bool operator> (const Edge& x) const {
		return cost > x.cost;
	}
};

class Graph {
private:
	//const long long int INF = (long long)1e18;
	vector<vector<Edge> > v; 
	int n;
public:
	Graph(int x){
		n = x;
		v = vector<vector<Edge> >(x);
	}

	vector<Edge>& operator[](int x){
		return v[x];
	}

	const vector<Edge>& operator[](int x) const {
		return v[x];
	}

	int size() const {
		return n;
	}

	void add_edge(int from, Edge e){
		v[from].push_back(e);
	}

	void add_edge(int from, int to, cost_t cost){
		add_edge(from,Edge(to,cost));
	}
};

vector<cost_t> dijkstra(int from, const Graph& v) {
	vector<cost_t> dist(v.size(),INF);
	priority_queue<Edge,vector<Edge>,greater<Edge>> que;
	que.push(Edge(from,0));
	while(!que.empty()){
		Edge e = que.top();
		que.pop();
		if(dist[e.to] == INF){
			dist[e.to] = e.cost;
			for(auto to : v[e.to]){
				if(dist[to.to] == INF)
					que.push(Edge(to.to, e.cost+to.cost));
			}
		}
	}
	return dist;
}

vector<cost_t> bellmanford(int from, const Graph& g){
	vector<cost_t> res(g.size(),INF);
	res[from] = 0;
	bool conf = true;
	int cnt = 0;
	while(conf){
		conf = false;
		for(int i = 0; i < g.size(); i++){
			if(res[i] != INF)
			for(const auto& e : g[i]){
				if(res[e.to] > res[i]+e.cost){
					conf = true;
					res[e.to] = res[i]+e.cost;
				}
			}
		}
		if(cnt > g.size()+5) return vector<cost_t>();
		cnt++;
	}
	return res;
}

Graph prim(const Graph g){
	using T = tuple<cost_t, int, int>;
	priority_queue<T, vector<T>, greater<T>> qu;
	int n = g.size();
	assert(n != 0);
	vector<bool> added(n,false);
	qu.emplace(0,0,0);
	Graph res(n);
	while(!qu.empty()){
		int from, to;
		cost_t cost;
		tie(cost, from, to) = qu.top();
		qu.pop();
		if(!added[to]){
			added[to] = true;
			res.add_edge(from, to, cost);
			res.add_edge(to, from, cost);
			for(const auto &e : g[to]){
				if(!added[e.to]){
					qu.emplace(e.cost, to, e.to);
				}
			}
		}
	}
	return res;
}
//liblary

void dfs(const Graph &g, vector<int> &ans, int p,int num){
	if(ans[p] != -1) return ;
	ans[p] = num;
	DEBUG(num); DEBUG(p);
	RBP(e,g[p]){
		if(ans[p] != -1) dfs(g,ans,e.to,num);
	}
	return;
}

int main()
{
	ios_init();
	int n,m,q;
	cin >> n >> m >> q;
	uftree uf(n);
	set<P> edges;
	Graph g(n);
	REP(i,m){
		int a,b;
		cin >> a >> b;
		a--; b--;
		edges.emplace(a,b);
	}
	vector<P> qu(q);
	REP(i,q){
		int c,d;
		cin >> c >> d;
		c--; d--;
		qu[i] = P(c,d);
		edges.erase(P(c,d));
	}
	RBP(e,edges){
		uf.unite(e.F,e.S);
		g.add_edge(e.F,e.S,-1);
		g.add_edge(e.S,e.F,-1);
	}
	vector<int> ans(n,-1);
	RREP(i,q){
		DEBUG(i);
		bool f1 = uf.same(qu[i].F,0), f2 = uf.same(qu[i].S,0);
		if(f1^f2){
			if(f1){
				dfs(g,ans,qu[i].S,i+1);
			}else if(f2){
				dfs(g,ans,qu[i].F,i+1);
			}
		}
		g.add_edge(qu[i].F,qu[i].S,-1);
		g.add_edge(qu[i].S,qu[i].F,-1);
		uf.unite(qu[i].F, qu[i].S);
	}
	FOR(i,1,n){
		if(!uf.same(0,i)){
			ans[i] = 0;
		}
	}
	FOR(i,1,n){
		cout << ans[i] << endl;
	}
	return 0;
}
0