제출 #1356247

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1356247		vjudge1	드문 곤충 (IOI22_insects)	C++20	99.89 / 100	11 ms	456 KiB

insects

#include "insects.h"
#include<bits/stdc++.h>
using namespace std;
int a[2100];
vector<int> lef;
vector<int> lastin;
vector<int> lastout;
int min_cardinality(int N) {
    int k=0;
    int val=0;
    int ins=0;
    for(int i=0;i<N;i++){
        move_inside(i);
        val=press_button();
        a[i]=1;
        ins++;
        if(val==1){
            k++;
        }
        else{
            lef.push_back(i);
            ins--;
            a[i]=0;
            move_outside(i);
        }
    }
    srand(time(NULL));
    random_shuffle(lef.begin(), lef.end());
    int l=1,r=N/k;
    while(l<r){
        int mid=(l+r+1)/2;
        for(auto i:lef){
            
                a[i]=1;
                move_inside(i);
                ins++;
            
            val=press_button();
            if(val>mid){
                lastout.push_back(i);
                move_outside(i);
                ins--;
                a[i]=0;
            }
            else{
                lastin.push_back(i);
            } 
        }
        if(ins==mid*k){
            l=mid;
            lef=lastout;
        }
        else {
            r=mid-1;
            for(auto i : lastin){
                move_outside(i);
                a[i]=0;
                ins--;
            }
            lef=lastin;
        }
        lastin.clear();
        lastout.clear();
    }
    return l;
}

컴파일 시 표준 에러 (stderr) 메시지

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:28:19: warning: 'void std::random_shuffle(_RAIter, _RAIter) [with _RAIter = __gnu_cxx::__normal_iterator<int*, vector<int> >]' is deprecated: use 'std::shuffle' instead [-Wdeprecated-declarations]
   28 |     random_shuffle(lef.begin(), lef.end());
      |     ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/13/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:51,
                 from insects.cpp:2:
/usr/include/c++/13/bits/stl_algo.h:4581:5: note: declared here
 4581 |     random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 74.89 / 75