제출 #969307

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
969307		angels	Closing Time (IOI23_closing)	C++17	0 / 100	170 ms	32848 KiB

closing

#include "closing.h"

#include <bits/stdc++.h>
using namespace std;
vector<pair<int, int>>a[200001];
void dfs(int x, long long int d, long long int dist[], bool visited[])
{
    visited[x]=1;
    dist[x]=d;
    for(int i=0; i<a[x].size(); i++)
    {
        if(!visited[a[x][i].first])
        {
            dfs(a[x][i].first, d+a[x][i].second, dist, visited);
        }
    }
}

int max_score(int N, int X, int Y, long long K, std::vector<int> U, std::vector<int> V, std::vector<int> W)
{
    int n=N, x=X, y=Y;
    long long k=K;
    for(int i=0; i<n-1; i++)
    {
        a[U[i]].push_back({V[i], W[i]});
        a[V[i]].push_back({U[i], W[i]});
    }
    bool visited[n];
    memset(visited, 0, sizeof(visited));
    long long int dist1[n], dist2[n];
    dfs(x, 0, dist1, visited);
    memset(visited, 0, sizeof(visited));
    dfs(y, 0, dist2, visited);
    long long int dist[2*n];
    int j=0, j1=n;
    for(int i=0; i<n; i++)
    {
        dist[j]=dist1[i];
        dist[j1]=dist2[i];
        j++; j1++;
    }
    sort(dist, dist+2*n);
    int rez=0;
    long long kk=0;
    for(int i=0; i<2*n; i++)
    {
        kk+=dist[i];
        if(kk<=k)
            rez++;
        else
            break;
    }
    return rez;
}

컴파일 시 표준 에러 (stderr) 메시지

closing.cpp: In function 'void dfs(int, long long int, long long int*, bool*)':
closing.cpp:10:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     for(int i=0; i<a[x].size(); i++)
      |                  ~^~~~~~~~~~~~

• Subtask 0: 0 / 0
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• Subtask 2: 0 / 9
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• Subtask 9: 0 / 17