Submission #338476

#	Time	Username	Problem	Language	Result	Execution time	Memory
338476		kutbilim_one	Evacuation plan (IZhO18_plan)	C++14	23 / 100	486 ms	45484 KiB

plan

/** kutbilim.one **/
#include <bits/stdc++.h>

using namespace std;

#define all(x) x.begin(),x.end()
#define int long long
#define endl '\n'
							/*
ifstream in("test.txt"); 
#define cin in					*/

vector< vector<pair<int, int>> > g;
vector<int> used, rad, dist;
int n, m;
       
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    cin >> n >> m;
    g.resize(1+n);
    dist.assign(1+n, INT_MAX);
    rad.assign(1+n, 0);
    used.assign(1+n, 0);
             
    int v[m], u[m], w[m];
    for(int i = 0; i < m; i++){
    	cin >> v[i] >> u[i] >> w[i];
    	g[v[i]].push_back({u[i], w[i]});
    	g[u[i]].push_back({v[i], w[i]});
    }

    priority_queue<pair<int,int>> q;
	
    int k;
    cin >> k;
    for(int i = 0; i < k; i++){
   		int a; cin >> a;
   		dist[a] = 0;
		q.push({0,a});
    }

   	while(!q.empty()) {
 		int a = q.top().second; q.pop();
 		if (used[a]) continue;
 		used[a] = true;
		for(auto u : g[a]){
 			int b = u.first, wi = u.second;
 			if(dist[a]+wi < dist[b]){
 				dist[b] = min(dist[b], dist[a]+wi);
 				q.push({-dist[b], b});
 			}
 		}
	}
    /*
    g.resize(1+n);       
    for(int i = 0; i < m; i++){
    	g[v[i]].push_back({u[i], dist[u[i]]});
    	g[u[i]].push_back({v[i], dist[v[i]]});
    }
    
    vector< vector<int> > dis(n, vector<int>(n, 0));
    for(int i = 1; i <= n; i++){
    	fill(all(used), 0);	
    	q.push({0, i});
    	while(!q.empty()){
 			int a = q.top().second; q.pop();
 			if(used[a]) continue;
	 		used[a] = true;
			for(auto u : g[a]){
 				int b = u.first, wi = u.second;
 				if(dis[i][a]+wi > dis[i][b]){
 					dis[i][b] = dis[i][a]+wi;
 					q.push({-dis[i][b], b});
 				} 	
 			}
		}
    	for(int j = 1; j <= n; j++){
    		cout << dis[i][j] << " ";
    	}
    	cout << endl;
    }
    */
    

          
 	int Q;
 	cin >> Q;
 	while(Q--){
 		int s, t;
 		cin >> s >> t;
 		cout << min(dist[s],dist[t]) << endl;	
 	}          
	
    
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 13 / 13
• Subtask 3: 0 / 12
• Subtask 4: 0 / 19
• Subtask 5: 0 / 46