Submission #991731

#	Time	Username	Problem	Language	Result	Execution time	Memory
991731		stdfloat	Closing Time (IOI23_closing)	C++17	8 / 100	101 ms	27564 KiB

closing

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

using ll = long long;

int max_score(int n, int X, int Y, long long K, vector<int> U, vector<int> V, vector<int> W) {
    vector<vector<pair<int, int>>> E(n);
    for (int i = 0; i < n - 1; i++) {
        E[U[i]].push_back({V[i], W[i]});
        E[V[i]].push_back({U[i], W[i]});
    }

    vector<ll> v;
    for (auto st : {X, Y}) {
        queue<int> q;
        vector<ll> dis(n, -1);
        q.push(st); dis[st] = 0;
        while (!q.empty()) {
            auto x = q.front(); q.pop();

            for (auto [i, w] : E[x]) {
                if (dis[i] == -1) {
                    dis[i] = dis[x] + w;
                    q.push(i);
                }
            }
        }

        for (auto i : dis)
            if (i != -1) v.push_back(i);
    }

    sort(v.begin(), v.end());

    ll sm = 0;
    for (int i = 0; i <= (int)v.size(); i++)
        if (i == (int)v.size() || (sm += v[i]) > K) return i;
}

Compilation message (stderr)

closing.cpp: In function 'int max_score(int, int, int, long long int, std::vector<int>, std::vector<int>, std::vector<int>)':
closing.cpp:8:39: warning: control reaches end of non-void function [-Wreturn-type]
    8 |     vector<vector<pair<int, int>>> E(n);
      |                                       ^

• Subtask 0: 0 / 0
• Subtask 1: 8 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 12
• Subtask 4: 0 / 14
• Subtask 5: 0 / 9
• Subtask 6: 0 / 11
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 17