oj.uz

Submission #1088383

# Submission time Handle Problem Language Result Execution time Memory
1088383 2024-09-14T10:14:48 Z abczz Rarest Insects (IOI22_insects) C++17
99.9 / 100
 47 ms 940 KB 
#include "insects.h"
#include <iostream>
#include <vector>
#include <random>
#define ll long long

using namespace std;

random_device rd;
mt19937 mt(rd());
int min_cardinality(int N) {
  vector <ll> V, X, A, B;
  ll s = 0, a, b, mid, f = 1;
  for (int i=0; i<N; ++i) {
    move_inside(i);
    auto res = press_button();
    if (res > 1) {
      move_outside(i);
      X.push_back(i);
    }
    else V.push_back(i);
  }
  for (auto u : V) move_outside(u);
  s = V.size();
  while (true) {
    A.clear();
    B.clear();
    if (X.size() < s) return f;
    a = (X.size() / s) / 2;
    a = max(a, 1LL);
    b = a+1;
    b = min(b, (ll)X.size()/s);
    if (abs(a*s-(ll)X.size()/2) > abs(b*s-(ll)X.size()/2) || mt() % 4 == 3) mid = b;
    else mid = a;
    ll p = -1;
    for (auto u : X) {
      move_inside(u);
      auto res = press_button();
      if (res == mid && p == -1) p = u;
      if (res > mid) {
        B.push_back(u);
        move_outside(u);
      }
      else A.push_back(u);
    }
    for (auto u : A) move_outside(u);
    if (A.size() == mid * s) {
      swap(X, B);
      f += mid;
    }
    else {
      swap(X, A);
      for (int i=0; i<X.size(); ++i) {
        if (X[i] == p) {
          swap(X[i], X.back());
          X.pop_back();
          break;
        }
      }
    }
  }
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:28:18: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   28 |     if (X.size() < s) return f;
      |         ~~~~~~~~~^~~
insects.cpp:47:18: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   47 |     if (A.size() == mid * s) {
      |         ~~~~~~~~~^~~~~~~~~~
insects.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |       for (int i=0; i<X.size(); ++i) {
      |                     ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 5 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 3 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 4 ms 344 KB Output is correct
17 Correct 4 ms 344 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 2 ms 600 KB Output is correct
22 Correct 1 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 5 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 3 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 4 ms 344 KB Output is correct
17 Correct 4 ms 344 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 2 ms 600 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 10 ms 596 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 18 ms 444 KB Output is correct
26 Correct 20 ms 344 KB Output is correct
27 Correct 12 ms 344 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 12 ms 464 KB Output is correct
30 Correct 20 ms 856 KB Output is correct
31 Correct 20 ms 456 KB Output is correct
32 Correct 19 ms 464 KB Output is correct
33 Correct 12 ms 460 KB Output is correct
34 Correct 11 ms 344 KB Output is correct
35 Correct 22 ms 600 KB Output is correct
36 Correct 18 ms 344 KB Output is correct
37 Correct 17 ms 344 KB Output is correct
38 Correct 10 ms 600 KB Output is correct
39 Correct 10 ms 720 KB Output is correct
40 Correct 9 ms 600 KB Output is correct
41 Correct 3 ms 460 KB Output is correct

Subtask #3
74.9 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 26 ms 724 KB Output is correct
8 Correct 10 ms 344 KB Output is correct
9 Correct 28 ms 460 KB Output is correct
10 Correct 29 ms 344 KB Output is correct
11 Correct 29 ms 708 KB Output is correct
12 Correct 14 ms 344 KB Output is correct
13 Correct 25 ms 484 KB Output is correct
14 Correct 29 ms 344 KB Output is correct
15 Correct 32 ms 720 KB Output is correct
16 Correct 33 ms 708 KB Output is correct
17 Correct 29 ms 600 KB Output is correct
18 Correct 38 ms 592 KB Output is correct
19 Correct 38 ms 696 KB Output is correct
20 Correct 37 ms 600 KB Output is correct
21 Correct 23 ms 468 KB Output is correct
22 Correct 35 ms 712 KB Output is correct
23 Correct 35 ms 464 KB Output is correct
24 Correct 20 ms 856 KB Output is correct
25 Correct 14 ms 680 KB Output is correct
26 Correct 7 ms 344 KB Output is correct
27 Correct 36 ms 600 KB Output is correct
28 Correct 34 ms 600 KB Output is correct
29 Correct 38 ms 612 KB Output is correct
30 Correct 28 ms 344 KB Output is correct
31 Correct 21 ms 344 KB Output is correct
32 Correct 37 ms 344 KB Output is correct
33 Correct 29 ms 712 KB Output is correct
34 Correct 24 ms 344 KB Output is correct
35 Correct 33 ms 696 KB Output is correct
36 Partially correct 28 ms 600 KB Output is partially correct
37 Correct 29 ms 592 KB Output is correct
38 Correct 34 ms 344 KB Output is correct
39 Correct 34 ms 600 KB Output is correct
40 Correct 32 ms 940 KB Output is correct
41 Correct 25 ms 344 KB Output is correct
42 Partially correct 26 ms 464 KB Output is partially correct
43 Correct 10 ms 468 KB Output is correct
44 Correct 26 ms 600 KB Output is correct
45 Correct 47 ms 600 KB Output is correct
46 Correct 23 ms 688 KB Output is correct
47 Correct 22 ms 592 KB Output is correct
48 Correct 19 ms 452 KB Output is correct