oj.uz

Submission #995988

# Submission time Handle Problem Language Result Execution time Memory
995988 2024-06-10T06:40:08 Z 54skyxenon Crocodile's Underground City (IOI11_crocodile) C++17
100 / 100
 1833 ms 125976 KB 
// https://oj.uz/problem/view/IOI11_crocodile

/** Needed for linking!!! */
#include "crocodile.h"

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define INF (ll)1e18

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]) {
    vector<map<int, int>> graph(N);
    vector<bool> is_exit(N);
    vector<set<int>> visited(N);

    for (int i = 0; i < M; i++) {
        graph[R[i][0]][R[i][1]] = graph[R[i][1]][R[i][0]] = L[i];
    }

    for (int i = 0; i < K; i++) {
        is_exit[P[i]] = true;
    }

    // Run Dijkstra's
    vector<vector<ll>> dist(graph.size(), {INF, INF});
    priority_queue<pair<ll, ll>> pq;

    for (ll i = 0; i < graph.size(); i++) {
        if (is_exit[i]) {
            pq.push({0, i});
            dist[i][0] = dist[i][1] = 0;
        }
    }

    while (pq.size()) {
        auto [d, u] = pq.top();
        pq.pop();
        d = -d;

        if (d > dist[u][1]) {
            continue;
        }

        for (auto& [v, w] : graph[u]) {
            ll cost = w + d;

            if (cost < dist[v][0]) {
                if (dist[v][0] != dist[v][1] && dist[v][0] < INF) {
                    dist[v][1] = dist[v][0];
                    pq.push({-dist[v][1], v});
                }
                dist[v][0] = cost;
            }
            else if (cost < dist[v][1]) {
                dist[v][1] = cost;
                pq.push({-cost, v});
            }
        }
    }

    return dist[0][1];
}

Compilation message

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:29:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::map<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for (ll i = 0; i < graph.size(); i++) {
      |                    ~~^~~~~~~~~~~~~~

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 1 ms 4700 KB Output is correct
8 Correct 1 ms 4700 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 1 ms 4700 KB Output is correct
8 Correct 1 ms 4700 KB Output is correct
9 Correct 3 ms 4956 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4700 KB Output is correct
12 Correct 6 ms 5312 KB Output is correct
13 Correct 4 ms 5468 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4700 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 1 ms 4700 KB Output is correct
8 Correct 1 ms 4700 KB Output is correct
9 Correct 3 ms 4956 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4700 KB Output is correct
12 Correct 6 ms 5312 KB Output is correct
13 Correct 4 ms 5468 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4700 KB Output is correct
16 Correct 1833 ms 114576 KB Output is correct
17 Correct 70 ms 37972 KB Output is correct
18 Correct 89 ms 39088 KB Output is correct
19 Correct 1675 ms 125976 KB Output is correct
20 Correct 683 ms 106836 KB Output is correct
21 Correct 34 ms 17236 KB Output is correct
22 Correct 533 ms 101408 KB Output is correct