제출 #897622

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
897622	2024-01-03 13:45:02	ttamx	Meetings (JOI19_meetings)	C++14	100 / 100	673 ms	1244 KiB

meetings

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#include "meetings.h"
#include<bits/stdc++.h>
using namespace std;
void Solve(int n){
  mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
  vector<vector<int>> comp(n);
  for(int i=1;i<n;i++)comp[0].emplace_back(i);
  auto link=[&](int u,int v){
    if(u>v)swap(u,v);
    Bridge(u,v);
  };
  function<void(int)> dnc=[&](int s){
    int sz=comp[s].size();
    if(!sz)return;
    vector<int> res,path{s};
    swap(res,comp[s]);
    int t=res[rng()%sz];
    for(auto u:res)if(u!=t){
      int v=Query(s,t,u);
      if(u==v)path.emplace_back(u);
      else comp[v].emplace_back(u);
    }
    sort(path.begin()+1,path.end(),[&](int l,int r){
      return Query(s,l,r)==l;
    });
    path.emplace_back(t);
    for(int i=1;i<path.size();i++)link(path[i-1],path[i]);
    for(auto u:path)dnc(u);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

meetings.cpp: In lambda function:
meetings.cpp:29:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   for(int i=1;i<path.size();i++)link(path[i-1],path[i]);
      |               ~^~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 71 / 71