Submission #1077032

#	Time	Username	Problem	Language	Result	Execution time	Memory
1077032		mariaclara	Rarest Insects (IOI22_insects)	C++17	47.50 / 100	145 ms	848 KiB

insects

#include "insects.h"
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define mk make_pair
#define pb push_back
#define fr first
#define sc second

int min_cardinality(int N) {
    vector<int> in(N), M;
    int colors = 0;

    for(int i = 0; i < N; i++) {
        move_inside(i);
        in[i] = 1;
        M.pb(i);
        if(press_button() == 2) move_outside(i), M.pop_back(), in[i] = 0; 
        else colors++;
    }

    int l = 1, r = N/colors;

    while(l <= r) {
        int mid = (l+r)/2;

        for(int i = 0; i < N; i++) {
            if(in[i]) continue;
            in[i] = 1;
            move_inside(i);
            M.pb(i);
            if(press_button() > mid) move_outside(i), in[i] = 0, M.pop_back(); 
        }

        if(sz(M) == colors*mid) l = mid+1;
        else r = mid-1;

        for(int i = 0; i < N; i++) if(in[i]) move_outside(i), in[i] = 0, M.pop_back();
    }
    
    return l-1;
}

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 22.5 / 75