oj.uz

Submission #985031

# Submission time Handle Problem Language Result Execution time Memory
985031 2024-05-17T09:49:11 Z thinknoexit Cyberland (APIO23_cyberland) C++17
15 / 100
 425 ms 54868 KB 
#include "cyberland.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
struct A {
    int v, st;
    double w;
    bool operator < (const A& o) const {
        return w > o.w;
    }
};
vector<A> adj[100100];
priority_queue<A> pq;
double dis[31][100100];
double val[31];
bool vis[100100];
int n, m, k, e;
void dfs(int v) {
    vis[v] = 1;
    for (auto& x : adj[v]) {
        if (!vis[x.v]) dfs(x.v);
    }
}
double solve(int NN, int M, int K, int H, vector<int> X, vector<int> Y, vector <int> C, vector<int> a) {
    n = NN, m = M, k = K, e = H;
    for (int i = 0;i < m;i++) {
        adj[X[i]].push_back({ Y[i], 0, (double)C[i] });
        adj[Y[i]].push_back({ X[i], 0, (double)C[i] });
    }
    memset(vis, 0, sizeof vis);
    dfs(0);
    if (!vis[e]) {
        for (int i = 0;i < n;i++) adj[i].clear();
        return -1;
    }
    val[0] = 1;
    for (int i = 1;i <= k;i++) val[i] = val[i - 1] * 2;
    for (int i = 0;i <= k;i++) {
        for (int j = 0;j < n;j++) dis[i][j] = 1e300;
    }
    for (int i = 0;i < n;i++) {
        if (i != 0 && a[i] != 0) continue;
        pq.push({ i, 0, 0 });
        dis[0][i] = 0;
    }
    while (!pq.empty()) {
        auto x = pq.top();
        pq.pop();
        int v = x.v, st = x.st;
        if (x.w > dis[st][v]) continue;
        if (v == e) continue;
        for (auto& x : adj[v]) {
            if (dis[st][x.v] > dis[st][v] + x.w * val[st]) {
                dis[st][x.v] = dis[st][v] + x.w * val[st];
                pq.push({ x.v, st, dis[st][x.v] });
            }
            if (a[x.v] == 2 && st < k) {
                if (dis[st + 1][x.v] > dis[st][v] + x.w * val[st]) {
                    dis[st + 1][x.v] = dis[st][v] + x.w * val[st];
                    pq.push({ x.v, st + 1, dis[st + 1][x.v] });
                }
            }
        }
    }
    for (int i = 0;i < n;i++) {
        adj[i].clear();
    }
    double mn = 1e300;
    for (int j = 0;j <= k;j++) {
        if (dis[j][e] == 1e300) continue;
        mn = min(mn, dis[j][e] / val[j]);
    }
    return mn;
}

Subtask #1
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 46 ms 27240 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 27224 KB Correct.
2 Correct 24 ms 27308 KB Correct.
3 Correct 24 ms 27300 KB Correct.
4 Correct 29 ms 27284 KB Correct.
5 Correct 29 ms 27280 KB Correct.
6 Correct 21 ms 27884 KB Correct.
7 Correct 29 ms 27996 KB Correct.
8 Correct 17 ms 28764 KB Correct.
9 Correct 29 ms 27124 KB Correct.
10 Correct 23 ms 26972 KB Correct.

Subtask #3
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 30 ms 27384 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 425 ms 33852 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #5
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 27224 KB Correct.
2 Correct 23 ms 27288 KB Correct.
3 Correct 22 ms 27228 KB Correct.
4 Correct 25 ms 28508 KB Correct.
5 Correct 24 ms 26972 KB Correct.

Subtask #6
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 ms 27228 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #7
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 117 ms 27292 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 3.0

# Verdict Execution time Memory Grader output
1 Runtime error 27 ms 54868 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -