oj.uz

Submission #874255

# Submission time Handle Problem Language Result Execution time Memory
874255 2023-11-16T14:35:26 Z LucaLucaM Super Dango Maker (JOI22_dango3) C++17
22 / 100
 1196 ms 1132 KB 
#include "dango3.h"
#ifdef LOCAL
#include "grader.cpp"
#endif // LOCAL

#include <vector>
#include <random>
#include <algorithm>
#include <functional>
#include <cassert>
#include <iostream>

std::mt19937 rng(3192702);

void Solve(int n, int m) {
  /**

  sol in O(n * m^2) query uri:

  pornesc cu toate valorile ramase si de fiecare data incerc sa scot cate 1

  **/

  std::vector<int> id(n * m + 1);
  for (int i = 1; i <= n * m; i++) {
    id[i] = i;
  }
  shuffle(id.begin() + 1, id.end(), rng);

  auto query = [&] (std::vector<int> v) {
    std::vector<int> w;
    for (const auto &x : v) {
      w.push_back(id[x]);
    }
    return Query(w);
  };
  auto answer = [&] (std::vector<int> v) {
    std::vector<int> w;
    for (const auto &x : v) {
      w.push_back(id[x]);
    }
    Answer(w);
  };

  std::function<std::vector<int>(std::vector<int>)> exclude = [&] (std::vector<int> v) {
    bool dont[n * m + 1] = {};
    for (const auto &x : v) {
      dont[x] = true;
    }
    std::vector<int> w;
    for (int i = 1; i <= n * m; i++) {
      if (!dont[i]) {
        w.push_back(i);
      }
    }
    return w;
  };

  bool taken[n * m + 1] = {};

  int SZ = 50'000 / m;

  for (int rep = 0; rep < m; rep++) {
    std::vector<int> cand;
    for (int i = 1; i <= n * m; i++) {
      if (!taken[i]) {
        cand.push_back(i);
      }
    }
    shuffle(cand.begin(), cand.end(), rng);
    if (cand.size() > SZ) {
      cand.resize(SZ);
    }
    assert(query(cand) != 0);
    std::vector<int> ret;
    ret.push_back(cand[0]);
    for (int i = 1; i < (int) cand.size() && (int) ret.size() < n; i++) {
      std::vector<int> nw = ret;
      nw.push_back(cand[i]);
      if (query(exclude(ret)) == query(exclude(nw))) {
        ret.push_back(cand[i]);
      }
    }
//    std::cout << "! " << (int) ret.size() << '\n';
    answer(ret);
    for (const auto &x : ret) {
      taken[x] = true;
    }
  }

}
/**


3 2
3 3 1 2 1 2

4 4
2 2 3 2 4 4 3 2 3 1 1 3 4 1 4 1


**/

Compilation message

dango3.cpp: In function 'void Solve(int, int)':
dango3.cpp:71:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   71 |     if (cand.size() > SZ) {
      |         ~~~~~~~~~~~~^~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 348 KB Output is correct
2 Correct 36 ms 348 KB Output is correct
3 Correct 35 ms 348 KB Output is correct
4 Correct 39 ms 504 KB Output is correct
5 Correct 32 ms 344 KB Output is correct
6 Correct 32 ms 348 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1105 ms 964 KB Output is correct
2 Correct 1135 ms 720 KB Output is correct
3 Correct 1075 ms 960 KB Output is correct
4 Correct 1085 ms 716 KB Output is correct
5 Correct 1135 ms 848 KB Output is correct
6 Correct 1196 ms 712 KB Output is correct

Subtask #4
0 / 78.0

# Verdict Execution time Memory Grader output
1 Runtime error 225 ms 1132 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -