Submission #67565

#	Time	Username	Problem	Language	Result	Execution time	Memory
67565		Hoget157	Crocodile's Underground City (IOI11_crocodile)	C++14	100 / 100	993 ms	118764 KiB

crocodile

#include "crocodile.h"
#include <bits/stdc++.h>
#define ll long long
#define INF 1e+18
#define pb push_back
using namespace std;

struct edge{ ll to,cost; };
typedef pair<int,int> P;

ll n,m,d1[100010],d2[100010];
vector<edge> G[100010];

int travel_plan(int N, int M, int R[][2], int L[], int K, int Q[]){
	n = N,m = M;
	for(int i = 0;i < n;i++){
		d1[i] = INF;
		d2[i] = INF;
	}
	for(int i = 0;i < m;i++){
		G[R[i][0]].pb({R[i][1],L[i]});
		G[R[i][1]].pb({R[i][0],L[i]});
	}
	priority_queue<P,vector<P>,greater<P>> que;
	for(int i = 0;i < K;i++){
		d1[Q[i]] = 0;
		d2[Q[i]] = 0;
		que.push(P(0,Q[i]));
	}
	while(!que.empty()){
		P p = que.top();que.pop();
		ll v = p.second;
		if(d2[v] < p.first) continue;
		for(edge e : G[v]){
			ll cost = d2[v] + e.cost;
			if(d1[e.to] > cost) swap(d1[e.to],cost);
			if(d2[e.to] > cost){
				d2[e.to] = cost;
				que.push(P(d2[e.to],e.to));
			}
		}
	}
	return d2[0];
}

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