Submission #847434

#	Time	Username	Problem	Language	Result	Execution time	Memory
847434		TheMiraiTraveller0711	Closing Time (IOI23_closing)	C++17	0 / 100	1010 ms	32708 KiB

closing

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

/*
Subtask 1 :
*/

vector<vector<pair<int, ll>>> adj;
vector<bool> vis;
void DFS(int u, ll 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 max_score(int N, int X, int Y, long long K,
              std::vector<int> U, std::vector<int> V, std::vector<int> W)
{
    adj.resize(N, vector<pair<int, ll>>());
    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> dist(N);
    vis.assign(N, 0);
    DFS(X, 0, dist);
    vector<ll> dist2(N);
    vis.assign(N, 0);
    DFS(Y, 0, dist2);

    dist.insert(dist.end(), dist2.begin(), dist2.end());
    sort(dist.begin(), dist.end());

    for (auto v : dist)
    {
        cerr << v << ' ';
    }
    cerr << '\n';

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

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:52:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |     while (cost + dist[pt] <= K && pt < dist.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