oj.uz

Submission #934480

# Submission time Handle Problem Language Result Execution time Memory
934480 2024-02-27T12:11:34 Z nguyentunglam Monster Game (JOI21_monster) C++17
100 / 100
 59 ms 692 KB 
#include "monster.h"
#include<bits/stdc++.h>
using namespace std;

mt19937 rng(10184104810471);

int rnd(int l, int r) {
  return l + rng() % (r - l + 1);
}

vector<int> dnc (vector<int> cur) {
  if (cur.size() < 2) return cur;
  vector<int> left, right;
  for(int i = 0; i < cur.size(); i++) {
    if (i < cur.size() / 2) left.push_back(cur[i]);
    else right.push_back(cur[i]);
  }
  left = dnc(left);
  right = dnc(right);
//  for(int &j : left) cout << j << " "; cout << endl;
//  for(int &j : right) cout << j << " "; cout << endl;
  vector<int> ret;
  for(int i = 0, j = 0; i < left.size() || j < right.size(); ) {
    if (i < left.size() && (j == right.size() || Query(right[j], left[i]))) {
      ret.push_back(left[i++]);
    } else ret.push_back(right[j++]);
  }
  return ret;
}

std::vector<int> Solve(int n) {
  vector<int> order;
  for(int i = 0; i < n; i++) order.push_back(i);
  shuffle(order.begin(), order.end(), rng);
  order = dnc(order);
//  for(int &j : order) cout << j << " "; cout << endl;

  int k = min(12, n);
  vector<int> win(k);
  for(int i = 0; i < k; i++) for(int j = i + 1; j < k; j++) {
    if (Query(order[i], order[j])) win[i]++;
    else win[j]++;
  }

  vector<int> tst;
  for(int i = 0; i < k; i++) if (win[i] == 1) {
    tst.push_back(i);
//    cout << i << endl;
  }

  assert(tst.size() == 2);
  int x = Query(order[tst[0]], order[tst[1]]) ? tst[0] : tst[1];

  int i = 0, cnt = 0;

  vector<int> ans(n);

  int pre = order[0];

  auto expand = [&] () {
    vector<int> tmp;
    while (i <= x) tmp.push_back(order[i++]);
    reverse(tmp.begin(), tmp.end());
    pre = tmp.back();
    for(int &j : tmp) ans[j] = cnt++;
  };

  expand();
  while (x + 1 < n) {
    for(int y = x + 1; y < n; y++) if (Query(pre, order[y])) {
      x = y;
      break;
    }
    expand();
  }
  return ans;
}

Compilation message

monster.cpp: In function 'std::vector<int> dnc(std::vector<int>)':
monster.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |   for(int i = 0; i < cur.size(); i++) {
      |                  ~~^~~~~~~~~~~~
monster.cpp:15:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     if (i < cur.size() / 2) left.push_back(cur[i]);
      |         ~~^~~~~~~~~~~~~~~~
monster.cpp:23:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |   for(int i = 0, j = 0; i < left.size() || j < right.size(); ) {
      |                         ~~^~~~~~~~~~~~~
monster.cpp:23:46: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |   for(int i = 0, j = 0; i < left.size() || j < right.size(); ) {
      |                                            ~~^~~~~~~~~~~~~~
monster.cpp:24:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     if (i < left.size() && (j == right.size() || Query(right[j], left[i]))) {
      |         ~~^~~~~~~~~~~~~
monster.cpp:24:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     if (i < left.size() && (j == right.size() || Query(right[j], left[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 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 6 ms 600 KB Output is correct
17 Correct 6 ms 600 KB Output is correct
18 Correct 8 ms 444 KB Output is correct
19 Correct 6 ms 444 KB Output is correct
20 Correct 8 ms 600 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 8 ms 440 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 0 ms 600 KB Output is correct
32 Correct 8 ms 600 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 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 6 ms 600 KB Output is correct
17 Correct 6 ms 600 KB Output is correct
18 Correct 8 ms 444 KB Output is correct
19 Correct 6 ms 444 KB Output is correct
20 Correct 8 ms 600 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 8 ms 440 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 0 ms 600 KB Output is correct
32 Correct 8 ms 600 KB Output is correct
33 Correct 42 ms 600 KB Output is correct
34 Correct 40 ms 600 KB Output is correct
35 Correct 41 ms 452 KB Output is correct
36 Correct 47 ms 600 KB Output is correct
37 Correct 42 ms 692 KB Output is correct
38 Correct 41 ms 600 KB Output is correct
39 Correct 59 ms 460 KB Output is correct
40 Correct 58 ms 444 KB Output is correct
41 Correct 42 ms 692 KB Output is correct
42 Correct 37 ms 600 KB Output is correct
43 Correct 40 ms 600 KB Output is correct
44 Correct 41 ms 592 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 600 KB Output is correct
2 Correct 47 ms 436 KB Output is correct
3 Correct 42 ms 692 KB Output is correct
4 Correct 45 ms 688 KB Output is correct
5 Correct 36 ms 456 KB Output is correct
6 Correct 42 ms 600 KB Output is correct
7 Correct 33 ms 460 KB Output is correct
8 Correct 37 ms 600 KB Output is correct
9 Correct 51 ms 600 KB Output is correct
10 Correct 50 ms 460 KB Output is correct
11 Correct 41 ms 456 KB Output is correct
12 Correct 42 ms 600 KB Output is correct
13 Correct 33 ms 600 KB Output is correct
14 Correct 32 ms 600 KB Output is correct
15 Correct 25 ms 600 KB Output is correct
16 Correct 25 ms 692 KB Output is correct
17 Correct 35 ms 600 KB Output is correct
18 Correct 28 ms 600 KB Output is correct