Submission #615546

#	Time	Username	Problem	Language	Result	Execution time	Memory
615546		nohaxjustsoflo	Crocodile's Underground City (IOI11_crocodile)	C++17	0 / 100	822 ms	262144 KiB

crocodile

#include <bits/stdc++.h>
#include <iostream>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<ll,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update> order_set;
mt19937 mt_rand(chrono::high_resolution_clock::now().time_since_epoch().count());
//uniform_int_distribution<int> gen; ///(min, max)
//int random() {return gen(mt_rand);}
const int mxN=2e5+5;
const int mod=998244353;
const int mxlogN=40;
const int mxK=26;
const int inf=2e9;
const int K=600;
struct edge
{
    int u,v,w;
    int other(int i)
    {
        return i^u^v;
    }
}es[mxN];
vector<int> adj[mxN];
int vis[mxN];
//#include "crocodile.h"

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    for(int i=0; i<M; i++)
    {
        int u=R[i][0],v=R[i][1],w=L[i];
        es[i]={u,v,w};
        adj[u].push_back(i);
        adj[v].push_back(i);
    }
    priority_queue<pair<ll,int>> q;
    for(int i=0; i<K; i++)
    {
        q.push({0,P[i]});
        vis[P[i]]=1;
    }
    while(q.size())
    {
        auto par=q.top(); q.pop();
        int i=par.second;
        ll w=-par.first;
        //cout << "tebra " << i << " " << w << "\n";
        if(!vis[i])
        {
            vis[i]++;
            continue;
        }
        if(!i) return w;
        for(int e:adj[i])
        {
            int j=es[e].other(i);
            //cout << "dodjem\n";
            if(vis[i]==2) continue;
            //cout << "dodjem2\n";
            ll d=w+es[e].w;
            q.push({-d,j});
        }
    }
    //cout << "ovde\n";
    return -1;
}
/*
int main()
{
    int n,m,k; cin >> n >> m >> k;
    int r[m][2], l[m], p[n];
    for(int i=0; i<m; i++) cin >> r[i][0] >> r[i][1] >> l[i];
    for(int i=0; i<k; i++) cin >> p[i];
    cout << travel_plan(n,m,r,l,k,p) << "\n";
}
*/
/*
5 4 3
0 1 2
0 2 3
3 2 1
2 4 4
1 3 4
*/

• Subtask 1: 0 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11