제출 #627818

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
627818		tutis	드문 곤충 (IOI22_insects)	C++17	0 / 100	149 ms	1336 KiB

insects

#include "insects.h"
#include <bits/stdc++.h>
using namespace std;
pair<int, int> min_cardinality(vector<int> x)
{
    if (x.size() == 1)
        return {1, 1};
    if (x.empty())
        return {0, 0};
    vector<int>v;
    for (int i : x)
    {
        v.push_back(i);
        move_inside(i);
        int k = press_button();
        if (k == 2)
        {
            v.pop_back();
            move_outside(i);
        }
    }
    for (int i : v)
        move_outside(i);
    int cnt = v.size();
    if (cnt * 2 > x.size())
        return {1, cnt};
    if (cnt == (int)x.size())
        return {cnt, cnt};
    if (cnt == 2)
        return {min(cnt, (int)x.size() - cnt), 2};
    set<int>S(x.begin(), x.end());
    for (int i : v)
        S.erase(i);
    pair<int, int>ans = min_cardinality(vector<int>(S.begin(), S.end()));
    if (ans.second != (int)v.size())
        return {1, (int)v.size()};
    ans.first += 1;
    return ans;
}
int min_cardinality(int N) {
    vector<int>v;
    for (int i = 0; i < N; i++)
        v.push_back(i);
    return min_cardinality(v).first;
}

컴파일 시 표준 에러 (stderr) 메시지

insects.cpp: In function 'std::pair<int, int> min_cardinality(std::vector<int>)':
insects.cpp:25:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     if (cnt * 2 > x.size())
      |         ~~~~~~~~^~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 75