제출 #282704

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
282704		sckmd	도서관 (JOI18_library)	C++14	0 / 100	31 ms	400 KiB

library

    #include <bits/stdc++.h>
    #include "library.h"
    #define MAX 1005
    using namespace std;
     
    //int Query(const std::vector<int>& M);
    //void Answer(const std::vector<int>& res);
     
    vector <int> susedi[MAX];
    int n;
     
    void go(int idx)
    {
      vector <int> all;
      for(int i = 0; i < n; i++)
      {
        if(i == idx)continue;
        if(find(susedi[i].begin(),susedi[i].end(),idx)!=susedi[i].end())continue;
        if(find(susedi[idx].begin(),susedi[idx].end(),i)!=susedi[idx].end())continue;
        if(susedi[i].size()==2)continue;
        all.push_back(i);
      }
      vector <int> qq;
      for(int i = 0; i < n; i++)qq.push_back(0);
      int lo = 0,hi=all.size()-1,mid=lo+hi>>1,r=-1;
      while(lo <= hi)
      {
        for(int j = 0; j < n; j++)qq[j]=0;
        for(int j = lo; j <= mid; j++)
        {
          qq[all[j]]=1;
        }
        int qres = Query(qq);
        qq[idx]=1;
        int qres2 = Query(qq);
        if(qres2 <= qres)r=mid,hi=mid-1;
        else lo=mid+1;
        mid=lo+hi>>1;
      }
      if(r!=-1)susedi[idx].push_back(all[r]),susedi[all[r]].push_back(idx);
    }
     
    vector <int> resenje;
     
    void dfs(int v,int p)
    {
      resenje.push_back(v+1);
      for(auto x:susedi[v])
      {
        if(x==p)continue;
        dfs(x,v);
      }
    }
     
    void Solve(int N)
    {
      n=N;
      for(int i = 0; i < n; i++)
      {
        if(susedi[i].size()<2)go(i);
      }
      for(int i = 0; i < n; i++)
      {
        if(susedi[i].size()==1){dfs(i,-1);break;}
      }
      if(n==1&&resenje.size()==0)resenje.push_back(1);
      Answer(resenje);
    }

컴파일 시 표준 에러 (stderr) 메시지

library.cpp: In function 'void go(int)':
library.cpp:25:40: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   25 |       int lo = 0,hi=all.size()-1,mid=lo+hi>>1,r=-1;
      |                                      ~~^~~
library.cpp:38:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   38 |         mid=lo+hi>>1;
      |             ~~^~~

• Subtask 1: 0 / 19
• Subtask 2: 0 / 81