Submission #847426

#	Time	Username	Problem	Language	Result	Execution time	Memory
847426		TheMiraiTraveller0711	Closing Time (IOI23_closing)	C++17	0 / 100	123 ms	33440 KiB

closing

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

/*
Subtask 1 :
*/
class Subtask1
{
public:
    vector<vector<pair<int, ll>>> adj;
    vector<bool> vis;
    void DFS(int u, int dd, vector<ll> &dist)
    {
        vis[u] = 1;
        dist[u] = dd;
        for (auto [v, w] : adj[u])
        {
            if (vis[v])
                continue;
            DFS(v, dd + w, dist);
        }
    }

    int getsol(int N, int X, int Y, long long K,
               vector<int> U, vector<int> V, vector<int> W)
    {
        adj.resize(N);
        for (int i = 0; i < N - 1; i++)
        {
            adj[U[i]].push_back({V[i], W[i]});
            adj[V[i]].push_back({U[i], W[i]});
        }
        vector<ll> dist1(N);
        vis.assign(N, 0);
        DFS(X, 0, dist1);
        vector<ll> dist2(N);
        vis.assign(N, 0);
        DFS(Y, 0, dist2);

        vector<ll> adist;
        for (int i = 0; i < N; i++)
        {
            adist.push_back(dist1[i]);
            adist.push_back(dist2[i]);
        }
        sort(adist.begin(), adist.end());

        int pt = 0, ans = 0;
        ll cost = 0;
        while (cost + adist[pt] <= K && pt < adist.size())
        {
            cost += adist[pt];
            pt++; ans++;
        }
        return ans;
    }
};

int max_score(int N, int X, int Y, long long K,
              std::vector<int> U, std::vector<int> V, std::vector<int> W)
{
    Subtask1 sub1;
    return sub1.getsol(N, X, Y, K, U, V, W);
}

Compilation message (stderr)

closing.cpp: In member function 'int Subtask1::getsol(int, int, int, long long int, std::vector<int>, std::vector<int>, std::vector<int>)':
closing.cpp:53:44: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |         while (cost + adist[pt] <= K && pt < adist.size())
      |                                         ~~~^~~~~~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 0 / 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