oj.uz

Submission #492329

# Submission time Handle Problem Language Result Execution time Memory
492329 2021-12-06T16:02:51 Z ponytail Crocodile's Underground City (IOI11_crocodile) C++17
46 / 100
 3 ms 588 KB 
#include "crocodile.h"
#include <stdio.h>
#include <stdlib.h>
#include <bits/stdc++.h>
using namespace std;

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]);


int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    long long dist[N];
    for(int i=0; i<N; i++) dist[i] = 1e15;
    dist[0] = 0;
    bool vis[N];
    for(int i=0; i<N; i++) vis[i] = 0;
    priority_queue<pair<long long, int>, vector<pair<long long, int> >, greater<pair<long long, int> > >pq;
    for(int i=0; i<N; i++) pq.push({dist[i], i});
    vector<pair<int, long long> > adj[N];
    for(int i=0; i<M; i++) {
        adj[R[i][0]].push_back({R[i][1], L[i]});
        adj[R[i][1]].push_back({R[i][0], L[i]});
    }
    while(pq.size()) {
        pair<long long, int> t = pq.top(); pq.pop();
        if(!vis[t.second]) {
            vis[t.second] = 1;
            for(pair<int, long long> x : adj[t.second]) {
                if(!vis[x.first] && dist[t.second] != 1e15 && dist[x.first] > dist[t.second] + x.second) {
                    dist[x.first] = dist[t.second] + x.second;
                    pq.push({dist[x.first], x.first});
                }
            }
        }
    }
    long long dp[N];
    for(int i=0; i<N; i++) dp[i] = 1e15;
    pair<long long, int> p[N];
    for(int i=0; i<N; i++) p[i] = {dist[i], i};
    sort(p, p+N);
    reverse(p, p+N);
    for(int i=0; i<K; i++) {
        dp[P[i]] = 0;
    }
    for(int it=0; it<2; it++) {
        for(int i=0; i<N; i++) {
            vector<long long> v;
            for(pair<int, long long> x : adj[p[i].second]) {
                if(dp[x.first] != 1e15) {
                    v.push_back(dp[x.first] + x.second);
                }
            }
            sort(v.begin(), v.end());
            if(v.size() > 1) dp[p[i].second] = min(dp[p[i].second], v[1]);
        }
    }
    return (int)dp[0];
    
}

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 3 ms 332 KB Output is correct
8 Correct 2 ms 460 KB Output is correct

Subtask #2
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 3 ms 332 KB Output is correct
8 Correct 2 ms 460 KB Output is correct
9 Correct 3 ms 588 KB Output is correct
10 Incorrect 1 ms 332 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 3 ms 332 KB Output is correct
8 Correct 2 ms 460 KB Output is correct
9 Correct 3 ms 588 KB Output is correct
10 Incorrect 1 ms 332 KB Output isn't correct
11 Halted 0 ms 0 KB -