oj.uz

Submission #831321

# Submission time Handle Problem Language Result Execution time Memory
831321 2023-08-20T04:37:16 Z definitelynotmee Rarest Insects (IOI22_insects) C++17
88.31 / 100
 90 ms 492 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>>;

const double coef_bin_search = 0.42, coef_sqrt = 0.13;

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();

    if(dif.size() > N*coef_sqrt/dif.size()){
        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 = (fim-ini)*coef_bin_search+ini;
            while(mid <= ini)
                mid++;

            // cerr << "mid = " << mid << '\n';
            
            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;
    } else {
        int resp = N;

        auto dq =[&](vector<int> dif, vector<int> resto, bool flag, auto dq) -> void {
            if(dif.size() == 1 || resto.size() == 0){
                resp = min(resp,(int)resto.size());
                return;
            }
            
            int mid = dif.size()/2;

            if(flag){
                for(int i = mid; i < dif.size(); i++)
                    m.erase(dif[i]);
            } else{
                for(int i = 0; i < mid; i++){
                    m.insert(dif[i]);
                }
            }

            vector<int> ldif, rdif, lresto, rresto;

            for(int i = 0; i < mid; i++)
                ldif.push_back(dif[i]);
            
            for(int i = mid; i < dif.size(); i++)
                rdif.push_back(dif[i]);
            
            for(int i : resto){
                m.insert(i);
                if(m.resp() == 2)
                    lresto.push_back(i);
                else rresto.push_back(i);
                m.erase(i);
            }

            dq(ldif,lresto,1,dq);
            m.clear();
            dq(rdif,rresto,0,dq);
        };

        
        dq(dif,resto,0,dq);
        return resp+1;
    }
    

    

}

Compilation message

insects.cpp: In lambda function:
insects.cpp:109:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  109 |                 for(int i = mid; i < dif.size(); i++)
      |                                  ~~^~~~~~~~~~~~
insects.cpp:122:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  122 |             for(int i = mid; i < dif.size(); i++)
      |                              ~~^~~~~~~~~~~~
insects.cpp: In instantiation of 'min_cardinality(int)::<lambda(std::vector<int>, std::vector<int>, bool, auto:23)> [with auto:23 = min_cardinality(int)::<lambda(std::vector<int>, std::vector<int>, bool, auto:23)>]':
insects.cpp:139:26:   required from here
insects.cpp:109:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  109 |                 for(int i = mid; i < dif.size(); i++)
      |                                  ~~^~~~~~~~~~~~
insects.cpp:122:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  122 |             for(int i = mid; i < dif.size(); i++)
      |                              ~~^~~~~~~~~~~~

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 0 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 300 KB Output is correct
8 Correct 7 ms 304 KB Output is correct
9 Correct 8 ms 308 KB Output is correct
10 Correct 3 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 3 ms 304 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 7 ms 208 KB Output is correct
15 Correct 7 ms 208 KB Output is correct
16 Correct 8 ms 308 KB Output is correct
17 Correct 8 ms 312 KB Output is correct
18 Correct 5 ms 304 KB Output is correct
19 Correct 3 ms 300 KB Output is correct
20 Correct 3 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
15.0 / 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 0 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 300 KB Output is correct
8 Correct 7 ms 304 KB Output is correct
9 Correct 8 ms 308 KB Output is correct
10 Correct 3 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 3 ms 304 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 7 ms 208 KB Output is correct
15 Correct 7 ms 208 KB Output is correct
16 Correct 8 ms 308 KB Output is correct
17 Correct 8 ms 312 KB Output is correct
18 Correct 5 ms 304 KB Output is correct
19 Correct 3 ms 300 KB Output is correct
20 Correct 3 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 Correct 8 ms 300 KB Output is correct
24 Correct 9 ms 324 KB Output is correct
25 Correct 33 ms 324 KB Output is correct
26 Correct 39 ms 308 KB Output is correct
27 Correct 13 ms 208 KB Output is correct
28 Correct 7 ms 312 KB Output is correct
29 Correct 23 ms 312 KB Output is correct
30 Correct 37 ms 308 KB Output is correct
31 Correct 31 ms 308 KB Output is correct
32 Correct 30 ms 308 KB Output is correct
33 Correct 28 ms 312 KB Output is correct
34 Correct 43 ms 308 KB Output is correct
35 Correct 28 ms 316 KB Output is correct
36 Correct 31 ms 312 KB Output is correct
37 Correct 27 ms 316 KB Output is correct
38 Correct 24 ms 208 KB Output is correct
39 Correct 10 ms 208 KB Output is correct
40 Correct 11 ms 308 KB Output is correct
41 Correct 8 ms 208 KB Output is correct

Subtask #3
63.31 / 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 0 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 Correct 14 ms 304 KB Output is correct
8 Correct 12 ms 336 KB Output is correct
9 Partially correct 59 ms 492 KB Output is partially correct
10 Partially correct 90 ms 328 KB Output is partially correct
11 Correct 34 ms 304 KB Output is correct
12 Correct 36 ms 340 KB Output is correct
13 Partially correct 62 ms 328 KB Output is partially correct
14 Partially correct 72 ms 304 KB Output is partially correct
15 Partially correct 38 ms 328 KB Output is partially correct
16 Partially correct 52 ms 312 KB Output is partially correct
17 Partially correct 77 ms 332 KB Output is partially correct
18 Partially correct 80 ms 324 KB Output is partially correct
19 Partially correct 57 ms 332 KB Output is partially correct
20 Partially correct 58 ms 308 KB Output is partially correct
21 Partially correct 73 ms 456 KB Output is partially correct
22 Partially correct 50 ms 312 KB Output is partially correct
23 Correct 41 ms 316 KB Output is correct
24 Correct 32 ms 324 KB Output is correct
25 Correct 29 ms 328 KB Output is correct
26 Correct 14 ms 448 KB Output is correct
27 Partially correct 48 ms 304 KB Output is partially correct
28 Partially correct 50 ms 328 KB Output is partially correct
29 Partially correct 46 ms 312 KB Output is partially correct
30 Partially correct 52 ms 308 KB Output is partially correct
31 Partially correct 61 ms 312 KB Output is partially correct
32 Partially correct 60 ms 324 KB Output is partially correct
33 Partially correct 59 ms 308 KB Output is partially correct
34 Partially correct 59 ms 316 KB Output is partially correct
35 Partially correct 58 ms 376 KB Output is partially correct
36 Partially correct 32 ms 312 KB Output is partially correct
37 Partially correct 88 ms 308 KB Output is partially correct
38 Partially correct 58 ms 344 KB Output is partially correct
39 Partially correct 51 ms 344 KB Output is partially correct
40 Partially correct 60 ms 324 KB Output is partially correct
41 Partially correct 40 ms 376 KB Output is partially correct
42 Partially correct 70 ms 440 KB Output is partially correct
43 Partially correct 10 ms 300 KB Output is partially correct
44 Partially correct 47 ms 336 KB Output is partially correct
45 Correct 35 ms 308 KB Output is correct
46 Correct 29 ms 308 KB Output is correct
47 Correct 27 ms 340 KB Output is correct
48 Correct 36 ms 300 KB Output is correct