oj.uz

답안 #1113117

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1113117 2024-11-15T19:27:53 Z ortsac 사이버랜드 (APIO23_cyberland) C++17
49 / 100
 180 ms 36436 KB 
#include "cyberland.h"
#include <bits/stdc++.h>

using namespace std;

#define int long long
#define pii pair<long long, long long>
#define fr first
#define se second

const double INF = 1e100;

vector<vector<pii>> adj;
vector<bool> vis;

void dfs(int node) {
    if (vis[node]) return;
    vis[node] = 1;
    for (auto u : adj[node]) dfs(u.fr);
}

double solve(int32_t n, int32_t m, int32_t k, int32_t h, vector<int32_t> x, vector<int32_t> y, vector<int32_t> c, vector<int32_t> arr) {
    adj.clear();
    vis.clear();
    adj.resize(n);
    vis.resize(n);
    for (int i = 0; i < m; i++) {
        int a = x[i], b = y[i], co = c[i];
        if (a != h) adj[a].push_back({b, co});
        if (b != h) adj[b].push_back({a, co});
    }
    vector<vector<bool>> prop(n, vector<bool>(31));
    vector<vector<double>> dist(n, vector<double>(31, INF));
    priority_queue<pair<double, pii>> pq;
    dist[0][0] = 0;
    pq.push({0, {0, 0}});
    dfs(0);
    for (int i = 0; i < n; i++) {
        if ((arr[i] == 0) && vis[i]) {
            dist[i][0] = 0;
            pq.push({0, {i, 0}});
        } 
    }
    while (!pq.empty()) {
        auto [u, qtd] = pq.top().se;
        pq.pop();
        if (prop[u][qtd]) continue;
        prop[u][qtd] = 1;
        for (auto [v, cost] : adj[u]) {
            // propaga sem aumentar o k
            if (!prop[v][qtd]) {
                double novo = (((double)cost) + dist[u][qtd]);
                //if (arr[v] == 0) novo = 0;
                if (novo < dist[v][qtd]) {
                    dist[v][qtd] = novo;
                    pq.push({-novo, {v, qtd}});
                }
            }
            if ((qtd < k) && (arr[v] == 2) && (!prop[v][qtd + 1])) {
                double novo = (((double)cost) + dist[u][qtd]) / 2.0;
                if (novo < dist[v][qtd + 1]) {
                    dist[v][qtd + 1] = novo;
                    pq.push({-novo, {v, qtd + 1}});
                }
            }
        }
    }
    double ans = INF;
    for (int i = 0; i <= k; i++) {
        ans = min(ans, dist[h][i]);
    }
    if (ans == INF) return -1;
    return ans;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 592 KB Correct.
2 Correct 19 ms 460 KB Correct.

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 848 KB Correct.
2 Correct 33 ms 988 KB Correct.
3 Correct 28 ms 908 KB Correct.
4 Correct 31 ms 916 KB Correct.
5 Correct 32 ms 948 KB Correct.
6 Correct 33 ms 4880 KB Correct.
7 Correct 36 ms 4844 KB Correct.
8 Correct 20 ms 9296 KB Correct.
9 Correct 28 ms 504 KB Correct.
10 Correct 26 ms 336 KB Correct.

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 876 KB Correct.
2 Correct 37 ms 1876 KB Correct.
3 Correct 27 ms 1868 KB Correct.
4 Correct 30 ms 1360 KB Correct.
5 Correct 30 ms 1428 KB Correct.
6 Correct 8 ms 4432 KB Correct.

Subtask #4
0.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 154 ms 30396 KB Correct.
2 Incorrect 144 ms 2156 KB Wrong Answer.
3 Halted 0 ms 0 KB -

Subtask #5
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 872 KB Correct.
2 Correct 30 ms 848 KB Correct.
3 Correct 28 ms 892 KB Correct.
4 Correct 30 ms 4524 KB Correct.
5 Correct 26 ms 336 KB Correct.

Subtask #6
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 924 KB Correct.
2 Correct 31 ms 1756 KB Correct.
3 Correct 63 ms 36436 KB Correct.
4 Correct 24 ms 4000 KB Correct.
5 Correct 31 ms 1360 KB Correct.
6 Correct 32 ms 1840 KB Correct.

Subtask #7
0.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 180 ms 1472 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 848 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -