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Submission #770840

# Submission time Handle Problem Language Result Execution time Memory
770840 2023-07-02T03:49:30 Z jlallas384 Crocodile's Underground City (IOI11_crocodile) C++17
46 / 100
 3 ms 2900 KB 
#include <bits/stdc++.h>
#include "crocodile.h"
using namespace std;
using ll = long long;
const int N = 100100;
vector<int> vis;
vector<pair<int,int>> dag[N];

int cycle(int v){
    vis[v] = 1;
    for(auto [u,w]: dag[v]){
        if(vis[u] == 0 && cycle(u)) return 1;
        if(vis[u] == 1) return 1;
    }
    vis[v] = 2;
    return 0;
};

int travel_plan(int n, int m, int r[][2], int L[], int k, int p[]){
    vector<vector<pair<int,int>>> g(n);
    for(int i = 0; i < m; i++){
        g[r[i][0]].emplace_back(r[i][1], L[i]);
        g[r[i][1]].emplace_back(r[i][0], L[i]);
    }
    vector<int> ext(n);
    for(int i = 0; i < k; i++){
        ext[p[i]] = 1;
    }
    vector<ll> dist(n, 1e18);
    vector<int> par(n), dep(n);
    priority_queue<pair<ll,int>> pq;
    pq.emplace(0, 0);
    dist[0] = 0;
    while(pq.size()){
        auto [d,v] = pq.top(); pq.pop();
        if(ext[v]) continue;
        if(-d > dist[v]) continue;
        for(auto [u,w]: g[v]){
            if(dist[v] + w < dist[u]){
                dist[u] = dist[v] + w;
                pq.emplace(-dist[u], u);
                dag[v].emplace_back(u, w);
            }
        }
    }
    vector<ll> dp(n, -1);
    vector<int> here(n);
    function<ll(int)> dfs = [&](int v){
        if(dp[v] != -1) return dp[v];
        if(ext[v]) return dp[v] = 0;
        vector<ll> dists;
        for(auto [u,w]: dag[v]){
            dists.push_back(dfs(u) + w);
        }
        if(dists.size() < 2) return dp[v] = (ll) 1e10;
        sort(dists.begin(), dists.end());
        return dp[v] = dists[1];
    };
    return (int) dfs(0);
}

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct

Subtask #2
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 2900 KB Output is correct
10 Incorrect 1 ms 2644 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 2900 KB Output is correct
10 Incorrect 1 ms 2644 KB Output isn't correct
11 Halted 0 ms 0 KB -