Submission #489776

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
489776	2021-11-24 15:21:24	dung11112003	Road Closures (APIO21_roads)	C++11	100 / 100	230 ms	46492 KiB

roads

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#include "roads.h"
#include <bits/stdc++.h>
using namespace std;
vector <long long> minimum_closure_costs(int N, vector <int> U, vector <int> V, vector <int> W)
{
    int n = N;
    vector <vector <array <int, 3>>> adj(n);
    for (int i = 0; i < n - 1; i++)
    {
        int u = U[i], v = V[i], w = W[i];
        adj[u].push_back({v, w, 0});
        adj[v].push_back({u, w, 0});
    }
    struct FenwickTree
    {
        //1 - indexed
        int n;
        vector <int> f;
        vector <long long> g;
        FenwickTree () : n(0), f(), g() {};
        FenwickTree (int n) : n(n), f(n + 1), g(n + 1) {};
        void insert(int x, long long d)
        {
            for (; x <= n; x += x & -x)
            {
                f[x]++;
                g[x] += d;
 
 
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• Subtask 2: 7 / 7
• Subtask 3: 14 / 14
• Subtask 4: 10 / 10
• Subtask 5: 17 / 17
• Subtask 6: 25 / 25
• Subtask 7: 22 / 22