Submission #629059

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
629059	2022-08-14 06:39:54	two_sides	Rarest Insects (IOI22_insects)	C++17	100 / 100	57 ms	424 KiB

insects

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#include "insects.h"
#include <bits/stdc++.h>
namespace {
    using namespace std;
    const int N = 2000;
    mt19937 rng(chrono::high_resolution_clock
    ::now().time_since_epoch().count());
    bool inside[N], dead[N]; int cnt;
    vector<int> ord;
    void insert(int i) {
        cnt++; inside[i] = 1;
        move_inside(ord[i]);
    }
    void erase(int i) {
        cnt--; inside[i] = 0;
        move_outside(ord[i]);
    }
}
int min_cardinality(int n) {
    ord.resize(n);
    iota(ord.begin(), ord.end(), 0);
    shuffle(ord.begin(), ord.end(), rng);
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 75 / 75