oj.uz

Submission #525941

# Submission time Handle Problem Language Result Execution time Memory
525941 2022-02-13T09:10:01 Z Josia Paths (RMI21_paths) C++14
36 / 100
 600 ms 18028 KB 
#pragma GCC optimize ("O3")

#include <bits/stdc++.h>

using namespace std;
#define int int64_t



vector<pair<int, int>> parents;
vector<vector<pair<int, int>>> graph;
vector<int> order;
int n, k;


void generateParents(int v, int p, int weight) {
    if (parents[v].first != -1) return;

    parents[v].first = p;
    parents[v].second = weight;

    for (auto u: graph[v]) {
        if (parents[u.first].first != -1) continue;
        generateParents(u.first, v, u.second);
    }
    order.push_back(v);
}



void merge(priority_queue<int> &A, priority_queue<int> &B) {
    if (A.size() > B.size()) A.swap(B);
    while(A.size()) {B.push(A.top()); A.pop();}
}



int stl(int v) {
    vector<priority_queue<int>> tree(n);  // offset, options

    for (int i = 0; i<n; i++) {
        if (graph[i].size() == 1 && i!=v) tree[i].push(0);
    }

    order.pop_back();

    for (int i: order) {
        int newElem = tree[i].top() + parents[i].second;
        tree[i].pop();
        tree[i].push(newElem);

        merge(tree[i], tree[parents[i].first]);
    }

    // cerr << "root element: ";

    // for (int i: tree[v]) {
    //     cerr << i << " ";
    // } cerr << "\n";


    int res = 0;

    for (int i = 0; i<k; i++) {
        res += tree[v].top();
        tree[v].pop();
    }

    return res;
}



void solve() {
    
    cin >> n >> k;
    graph.resize(n);
    parents.resize(n);

    for (int i = 0; i<n-1; i++) {
        int a, b, c; cin >> a >> b >> c;
        a--; b--;
        graph[a].push_back({b, c});
        graph[b].push_back({a, c});
    }

    for (int i = 0; i<n; i++) {
        // parents.clear();
        fill(parents.begin(), parents.end(), (pair<int, int>){-1, 0});
        order.clear();

        generateParents(i, -2, 0);

        // cerr << "order: ";
        // for (auto i: order) {
        //     cerr << i << " ";
        // } cerr << "\n";

        // cerr << "parents: ";
        // for (auto i: parents) {
        //     cerr << i.first << " ";
        // } cerr << "\n";

        assert(order.back() == i);

        int res = stl(i);

        cout << res << "\n";
        // cerr << "result: " << res << "\n";
    }
    


}

signed main() {
    cin.tie(0);
    ios_base::sync_with_stdio(0);

    solve();

    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct

Subtask #2
11.0 / 11.0

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

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 5 ms 332 KB Output is correct
4 Correct 4 ms 332 KB Output is correct
5 Correct 4 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 3 ms 332 KB Output is correct
8 Correct 136 ms 472 KB Output is correct
9 Correct 93 ms 488 KB Output is correct
10 Correct 55 ms 576 KB Output is correct
11 Correct 98 ms 460 KB Output is correct
12 Correct 79 ms 448 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 5 ms 332 KB Output is correct
4 Correct 4 ms 332 KB Output is correct
5 Correct 4 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 3 ms 332 KB Output is correct
8 Correct 136 ms 472 KB Output is correct
9 Correct 93 ms 488 KB Output is correct
10 Correct 55 ms 576 KB Output is correct
11 Correct 98 ms 460 KB Output is correct
12 Correct 79 ms 448 KB Output is correct
13 Execution timed out 734 ms 788 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1091 ms 18028 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 5 ms 332 KB Output is correct
4 Correct 4 ms 332 KB Output is correct
5 Correct 4 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 3 ms 332 KB Output is correct
8 Correct 136 ms 472 KB Output is correct
9 Correct 93 ms 488 KB Output is correct
10 Correct 55 ms 576 KB Output is correct
11 Correct 98 ms 460 KB Output is correct
12 Correct 79 ms 448 KB Output is correct
13 Execution timed out 734 ms 788 KB Time limit exceeded
14 Halted 0 ms 0 KB -