Submission #1058106

#	Time	Username	Problem	Language	Result	Execution time	Memory
1058106		Dan4Life	Rarest Insects (IOI22_insects)	C++17	0 / 100	1 ms	344 KiB

insects

#include "insects.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a), end(a)
using vi = vector<int>;
int D, inside[3000];

int min_cardinality(int n) {
    for(int i = 0; i < n; i++){
        move_inside(i);
        if(press_button()>1) move_outside(i);
        else inside[i]=1, D++;
    }
    int l = 1, r = n/D, p=1, tot=D;
    while(l<r){
        int mid = (l+r+1)/2;
        vi undo; undo.clear();
        for(int i = 0; i < n; i++)
            if(inside[i] > mid and mid<p)
                move_outside(i), inside[i]=0, tot--;
        for(int i = 0; i < n; i++){
            if(inside[i] or tot==D*mid) continue;
            if(press_button()>mid) move_outside(i);
            else inside[i]=mid, tot++, undo.pb(i);
        }
        if(tot==D*mid) l = mid;
        else{
            for(auto u : undo) move_outside(u);
            r=mid-1;
        }
        p=mid;
    }
    return l;
}

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