Submission #1223022

#	Time	Username	Problem	Language	Result	Execution time	Memory
1223022		12baater	Rarest Insects (IOI22_insects)	C++20	0 / 100	0 ms	412 KiB

insects

#include "insects.h"
#include <iostream>
#include <vector>

using namespace std;

bool box[2002];
int currentMax = 0;
int inBox = 0;
int n;

void add_until_group_amount(int num) {
    for(int i = 0; i < n; i++) {
        if(box[i]) continue;
        move_inside(i);
        int returnVal = press_button();
        if (returnVal > num) { move_outside(i); continue; }
        box[i] = true;
        inBox++;
    }
}


void remove_some(int num) {
    for(int i = 0; i < n; i++) {
        if (!box[i]) continue;
        move_outside(i);
        box[i] = false;
        inBox--;
    }
}

int min_cardinality(int N) {
    vector<int> groups(N);
    n = N;
    int groupCount = 0;

    int returnVal;
    for(int i = 0; i < N; i++) {
        move_inside(i);
        returnVal = press_button();
        if (returnVal > 1) { move_outside(i); continue; }
        box[i] = true;
        inBox++;
        groupCount++;
    }
    int upper = N/groupCount, lower = 0;
    // cout << "groupCount, upper: " << groupCount << " " << upper << "\n";
    int mid;
    while(upper-lower > 2) {
        mid = (upper-lower)>>1;
        // cout << "\n-----\n" << mid << "\n------\n";
        add_until_group_amount(mid);
        if (inBox/groupCount == mid) {
            lower = mid;
        } else {
            upper = mid;
            remove_some(mid);
        }
    }
    return mid;
}

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