oj.uz

답안 #995985

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
995985 2024-06-10T06:36:53 Z 54skyxenon 악어의 지하 도시 (IOI11_crocodile) C++17
89 / 100
 1535 ms 127004 KB 
// https://oj.uz/problem/view/IOI11_crocodile

// #define LOCAL_TESTING 1

/** Needed for linking!!! */

#ifndef LOCAL_TESTING
#include "crocodile.h"
#endif

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

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

vector<map<int, int>> graph;
vector<bool> is_exit;
vector<set<int>> visited;

ll dijkstra() {
    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] < 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];
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]) {
    graph.resize(N);
    is_exit.resize(N);
    visited.resize(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;
    }
        
    return dijkstra();
}

#ifdef LOCAL_TESTING

/**
 * 0 2
0 3
3 2
2 1
0 1
0 4
3 4

L=
4
3
2
10
100
7
9
P= 1
3
 */
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n = 5;
    int m = 7;
    int k = 2;

    int r[7][2] = {
        {0, 2},
        {0, 3},
        {3, 2},
        {2, 1},
        {0, 1},
        {0, 4},
        {3, 4},
    };

    int l[7] = {4, 3, 2, 10, 100, 7, 9};

    int p[2] = {1, 3};

    cout << travel_plan(n, m, r, l, k, p) << endl;
}

#endif

Compilation message

crocodile.cpp: In function 'long long int dijkstra()':
crocodile.cpp:25:22: 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]
   25 |     for (ll i = 0; i < graph.size(); i++) {
      |                    ~~^~~~~~~~~~~~~~

Subtask #1
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 0 ms 4440 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 4696 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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 0 ms 4440 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 4696 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 5 ms 5468 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
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 0 ms 4440 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 4696 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 5 ms 5468 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 1535 ms 114728 KB Output is correct
17 Correct 65 ms 37968 KB Output is correct
18 Correct 85 ms 38912 KB Output is correct
19 Correct 1430 ms 127004 KB Output is correct
20 Correct 637 ms 106664 KB Output is correct
21 Correct 32 ms 17240 KB Output is correct
22 Incorrect 454 ms 101460 KB Output isn't correct
23 Halted 0 ms 0 KB -