Submission #124588

#	Time	Username	Problem	Language	Result	Execution time	Memory
124588		MoNsTeR_CuBe	Sightseeing (NOI14_sightseeing)	C++17	15 / 25	3511 ms	102640 KiB

sightseeing

#include <bits/stdc++.h>
using namespace std;

const int INF = numeric_limits<int>::max();

signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	
	int n, m, q;
	cin >> n >> m >> q;
	
	vector< vector< pair<int, int> > > Graph(n+1);
	
	for(int i = 0; i < m; i++){
		
		int a, b, c;
		cin >> a >> b >> c;
		
		Graph[a].push_back(make_pair(b,c));
		Graph[b].push_back(make_pair(a,c));
	}
	
	vector< int > dist(n+1, -INF);
	
	priority_queue< pair<int, int> > pq;
	
	dist[1] = INF;
	pq.push(make_pair(INF,1));
	
	while(!pq.empty()){
		pair<int, int> pair = pq.top();
		pq.pop();
		
		int node = pair.second;
		int cost = pair.first;
		
		if(cost < dist[node]) continue;
		
		for(int i = 0; i < (int)Graph[node].size(); i++){
			int to = Graph[node][i].first;
			int price = Graph[node][i].second;
			
			if(min(cost, price) > dist[to]){
				dist[to] = min(cost, price);
				pq.push(make_pair(dist[to], to));
			}
		}
	}
	
	for(int i = 0; i < q; i++){
		int a;
		cin >> a;
		cout << dist[a] << endl;
	}
}

• Subtask 1: 4 / 4
• Subtask 2: 5 / 5
• Subtask 3: 6 / 6
• Subtask 4: 0 / 10