oj.uz

Submission #831273

# Submission time Handle Problem Language Result Execution time Memory
831273 2023-08-20T03:38:31 Z definitelynotmee Rarest Insects (IOI22_insects) C++17
10 / 100
 277 ms 356 KB 
#include "insects.h"
#include<bits/stdc++.h>
#define all(x) x.begin(), x.end()
using ll = long long;
using namespace std;
template<typename T>
using matrix = vector<vector<T>>;

struct Machine {
    set<int> s;

    void insert(int id){
        s.insert(id);
        move_inside(id);
    }
    void erase(int id){
        s.erase(id);
        move_outside(id);
    }

    int resp(){
        return press_button();
    }
    void clear(){
        auto it  = s.begin();
        while(it!=s.end()){
            move_outside(*it);
            it = s.erase(it);
        }
    }
};

int min_cardinality(int N) {
    mt19937 rng(time(nullptr));
    vector<int> dif;
    vector<int> resto;

    Machine m;

    for(int i = 0; i < N; i++){
        m.insert(i);
        if(m.resp() == 1){
            dif.push_back(i);
        } else m.erase(i), resto.push_back(i);
    }

    shuffle(all(dif),rng);
    shuffle(all(resto),rng);


    m.clear();


    int ini = 1, fim = N/dif.size();


    auto putless =[&](int mx){
        for(int i : resto){
            if(m.s.count(i))
                continue;
            m.insert(i);
            if(m.resp() > mx)
                m.erase(i);
        }
    };

    int last = -1;

    while(ini!=fim){
        int mid = (ini+fim)*0.4;
        while(mid <= ini)
            mid++;
        
        if(mid < last)
            m.clear();
        
        putless(mid-1);

        bool ok = 1;

        for(int i : dif){
            m.insert(i);
            ok&= m.resp() == mid;
            m.erase(i);
        }

        if(ok)
            ini = mid;
        else fim = mid-1;
        last = mid;
    } 

    return ini;

}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 18 ms 308 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 7 ms 308 KB Output is correct
9 Correct 7 ms 208 KB Output is correct
10 Correct 7 ms 208 KB Output is correct
11 Correct 2 ms 308 KB Output is correct
12 Correct 7 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 9 ms 304 KB Output is correct
15 Correct 10 ms 304 KB Output is correct
16 Correct 9 ms 208 KB Output is correct
17 Correct 9 ms 208 KB Output is correct
18 Correct 6 ms 208 KB Output is correct
19 Correct 6 ms 304 KB Output is correct
20 Correct 4 ms 208 KB Output is correct
21 Correct 4 ms 208 KB Output is correct
22 Correct 2 ms 208 KB Output is correct

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 18 ms 308 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 7 ms 308 KB Output is correct
9 Correct 7 ms 208 KB Output is correct
10 Correct 7 ms 208 KB Output is correct
11 Correct 2 ms 308 KB Output is correct
12 Correct 7 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 9 ms 304 KB Output is correct
15 Correct 10 ms 304 KB Output is correct
16 Correct 9 ms 208 KB Output is correct
17 Correct 9 ms 208 KB Output is correct
18 Correct 6 ms 208 KB Output is correct
19 Correct 6 ms 304 KB Output is correct
20 Correct 4 ms 208 KB Output is correct
21 Correct 4 ms 208 KB Output is correct
22 Correct 2 ms 208 KB Output is correct
23 Incorrect 259 ms 320 KB Too many queries.
24 Halted 0 ms 0 KB -

Subtask #3
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Partially correct 1 ms 208 KB Output is partially correct
7 Incorrect 277 ms 356 KB Too many queries.
8 Halted 0 ms 0 KB -