Submission #492928

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
492928	2021-12-09 18:48:44	Newtech66	Crocodile's Underground City (IOI11_crocodile)	C++17	100 / 100	518 ms	72888 KiB

crocodile

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#include "crocodile.h"
#include<bits/stdc++.h>
using namespace std;
using lol=long long int;
const lol inf=1e18+8;
 
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    vector<vector<pair<int,lol> > > g(N);
    for(int i=0;i<M;i++)
    {
        g[R[i][0]].push_back({R[i][1],L[i]});
        g[R[i][1]].push_back({R[i][0],L[i]});
    }
    priority_queue<pair<lol,int>,vector<pair<lol,int> >,greater<pair<lol,int> > > pq;
    vector<lol> mn(N,inf);
    vector<lol> smn(N,inf);
    for(int i=0;i<K;i++)
    {
        pq.push({0,P[i]});
        mn[P[i]]=smn[P[i]]=0;
    }
    while(!pq.empty())
    {
        auto [dist,u]=pq.top();
        pq.pop();
        if(dist>smn[u]) continue;
        for(auto [v,w]:g[u])
        {
            lol nxt=w+dist;
 
 
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• Subtask 1: 46 / 46
• Subtask 2: 43 / 43
• Subtask 3: 11 / 11