Submission #1003219

#	Time	Username	Problem	Language	Result	Execution time	Memory
1003219		LilPluton	Crocodile's Underground City (IOI11_crocodile)	C++14	100 / 100	283 ms	63404 KiB

crocodile

#include "crocodile.h"
#include <bits/stdc++.h>
#define OPT         ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define intt        long long
#define ll          long long
#define pb          push_back
#define ff          first
#define arr         array
#define vll         vector<int>
#define rep(i,j,k)  for(int i = j; i <= k; ++i)
#define all(a)      a.begin(),a.end()
#define pii         pair<int,int>
#define endll       '\n'
using namespace std;
const int INF = 1e9;
const int N = 1e5 + 5;




int travel_plan(int n, int m, int r[][2], int L[], int k, int p[])
{
    vector<vector<arr<int,2>>>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]});
    }
    arr<int,2>dist[n];
    bool vis[n];
    for(int i = 0; i < n; ++i)
        dist[i] = {INF,INF}, vis[i] = false;
    priority_queue<pair<int,int>, vector<pair<int,int>>, greater<pair<int,int>>>q;
    for(int i = 0; i < k; ++i)
    {
        q.push({0, p[i]});
        dist[p[i]] = {0 , 0};
    }
    while(!q.empty())
    {
        int v = q.top().second;
        q.pop();
        if(vis[v])
            continue;
        vis[v] = true;
        for(auto i : g[v])
        {
            int u = i[0];
            int w = i[1];
            if(dist[u][0] > dist[v][1] + w)
            {
                dist[u][1] = dist[u][0];
				dist[u][0] = dist[v][1] + w ;
				q.push({dist[u][1], u});
            }
            else if(dist[u][1] > dist[v][1] + w)
            {
                dist[u][1] = dist[v][1] + w;
				q.push({dist[u][1], u});
            }
        }
    }
    return dist[0][1];
}

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