Submission #944482

#	Time	Username	Problem	Language	Result	Execution time	Memory
944482		rahidilbayramli	Crocodile's Underground City (IOI11_crocodile)	C++17	100 / 100	456 ms	78312 KiB

crocodile

#include<bits/stdc++.h>
#include"crocodile.h"
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define vl vector<ll>
#define vi vector<int>
#define all(v) v.begin(), v.end()
#define pb push_back
#define pii pair<int, int>
#define pll pair<ll, ll>
#define f first
#define s second
using namespace std;
using namespace __gnu_pbds;
typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
const int sz = 1e5+5;
vector<pii>g[sz];
int vis[sz], e[sz], k = 0, i;
ll dist[sz], maxx = 0;
priority_queue<pll>pq;
void dijkstra()
{
    while(!pq.empty())
    {
        ll x = pq.top().f;
        ll a = pq.top().s;
        pq.pop();
        vis[a]++;
        if(vis[a] == 2){
            if(a == 0)
            {
                maxx = -x;
                return;
            }
            for(auto [u, w] : g[a])
                pq.push({x - w, u});
        }
    }
}
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    maxx = 0;
    for(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]});
    }
    for(i = 0; i < K; i++)
    {
      	vis[P[i]] = 1;
      	pq.push({0, P[i]});
    }
  	dijkstra();
    return maxx;
}

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