Submission #207590

#	Time	Username	Problem	Language	Result	Execution time	Memory
207590		aloo123	Crocodile's Underground City (IOI11_crocodile)	C++14	100 / 100	727 ms	47336 KiB

crocodile

#include <bits/stdc++.h>
#include <crocodile.h>
#define ll int
#define pb push_back
#define mp make_pair
#define s second
#define f first
using namespace std;
#define pii pair<int,int>
const int INF = INT_MAX;
int travel_plan(int n,int m,int r[][2],int l[],int k,int p[]){
	vector<pii> adj[n];
	for(int i =0;i<m;i++){
		int u = r[i][0];
		int v = r[i][1];
		int d = l[i];
		adj[u].push_back(make_pair(v,d));
		adj[v].push_back(make_pair(u,d));
	}
	pii dis[n];
	int actual[n];
	for(int i =0;i<n;i++) dis[i] = mp(INF,INF),actual[i]=INF;
	
	priority_queue<pii,vector<pii>,greater<pii>> pq;
	for(int i =0;i<k;i++){
		ll u = p[i];
		pq.push(mp(0,u));
		dis[u].f = 0;
		dis[u].s = 0;
		actual[u] = 0;
	}
	vector<bool> vis(n,false);
	while(!pq.empty()){
		pii u = pq.top();
		pq.pop();
		if(vis[u.s]) continue;
		vis[u.s]=true;
		// cout << u.s << endl;
		// cout << "NODES : "; 
		for(auto v:adj[u.s]){
			int Dist = actual[u.s] + v.s;
			int V = v.f;
			// cout << V << ' ';
			if(Dist <= dis[V].f){
				dis[V].s = dis[V].f;
				dis[V].f = Dist;

				actual[V] = dis[V].s;
				pq.push(mp(actual[V],V));
			}
			else if(Dist < dis[V].s){
				dis[V].s = Dist;
				actual[V] = Dist;
				pq.push(mp(Dist,V));
			}
		}
		// cout << endl;
	}

	return dis[0].s;

}

• Subtask 1: 46 / 46
• Subtask 2: 43 / 43
• Subtask 3: 11 / 11