Submission #627783

#	Time	Username	Problem	Language	Result	Execution time	Memory
627783		tutis	Rarest Insects (IOI22_insects)	C++17	0 / 100	1 ms	208 KiB

insects

#include "insects.h"
#include <bits/stdc++.h>
using namespace std;
int min_cardinality(vector<int> x)
{
    if (x.size() == 1)
        return 1;
    if (x.empty())
        return 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);
        }
    }
    if (v.size() * 2 > x.size())
        return 1;
    set<int> X(v.begin(), v.end());
    for (int i : v)
        move_outside(i);
    reverse(x.begin(), x.end());
    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);
    set<int> Y(v.begin(), v.end());
    for (int i : X)
        if (Y.find(i) != Y.end())
            return 1;
    set<int>S;
    for (int i : X)
        S.erase(i);
    for (int i : Y)
        S.erase(i);
    return 2 + min_cardinality(vector<int>(S.begin(), S.end()));
}
int min_cardinality(int N) {
    vector<int>v;
    for (int i = 0; i < N; i++)
        v.push_back(i);
    return min_cardinality(v);
}

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