oj.uz

Submission #940733

# Submission time Handle Problem Language Result Execution time Memory
940733 2024-03-07T14:30:21 Z Sundavar Monster Game (JOI21_monster) C++17
93 / 100
 72 ms 4944 KB 
#include "monster.h"
#include <bits/stdc++.h>
using namespace std;
mt19937 rng(11);

vector<vector<int> > m(1000, vector<int>(1000, -1));
bool ask(int a, int b){
  if(m[a][b] == -1){
    m[a][b] = Query(a,b);
    m[b][a] = 1 - m[a][b];
  }
  return m[a][b];
}

vector<int> solve2(vector<int> v){
  if(v.size() == 1) return v;
  vector<int> left, right;
  for(int i = 0; i < v.size(); i++)
    if(i < v.size()/2) left.push_back(v[i]);
    else right.push_back(v[i]);
  left = solve2(left), right = solve2(right);
  vector<int> res;
  /*for(int& a : left) cout << a << " ";
  cout << "\n";
  for(int& a : right) cout << a << " ";
  cout << "\n";
  cout << "\n";*/
  for(int l = 0, r = 0; l < left.size() || r < right.size();){
    if(r == right.size() || (l < left.size() && ask(right[r], left[l]))) res.push_back(left[l++]);
    else res.push_back(right[r++]);
  }
  return res;
}

void correct_long(vector<int>& v, int i){
  int l = 1;
  while(i+l+1 < v.size() && ask(v[i], v[i+l+1])) l++;
  for(int j = 0; j < (l+1)/2; j++) swap(v[i+j], v[i+l-j]);
}

void correct(vector<int>& v, int i){
  int l = 1;
  while(i+l < v.size() && !ask(v[i-1], v[i+l])) l++;
  for(int j = 0; j < (l+1)/2; j++) swap(v[i+j], v[i+l-j]);
}

std::vector<int> Solve(int N) {
  vector<int> v;
  for(int i = 0; i < N ; i++) v.push_back(i);
  shuffle(v.begin(), v.end(), rng);
  v = solve2(v);
  /*for(int& a : v) cout<<a<<" ";
  cout << "\n";*/
  
  int cnt = 0, j = 0;
  for(int i = 1; i < N; i++) cnt += ask(v[0], v[i]);
  if(cnt != 1) correct_long(v, 0);
  if(cnt == 1 && !ask(v[0], v[1])){
    int cnt2 = 0;
    for(int i = 0; i < N; i++) if(i != 1) cnt2 += ask(v[1], v[i]);
    if(cnt2 == 1) swap(v[0], v[1]);
  }
  for(int i = 0; i < N-1; i++)
    if(!ask(v[i], v[i+1])){
      correct(v, i+1);
    }
  /*for(int& a : v) cout<<a<<" ";
  cout << "\n";*/
  vector<int> T(N);
  for(int i = 0; i < N; i++) T[v[i]] = i;
  return T;
}

Compilation message

monster.cpp: In function 'std::vector<int> solve2(std::vector<int>)':
monster.cpp:18:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |   for(int i = 0; i < v.size(); i++)
      |                  ~~^~~~~~~~~~
monster.cpp:19:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     if(i < v.size()/2) left.push_back(v[i]);
      |        ~~^~~~~~~~~~~~
monster.cpp:28:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   for(int l = 0, r = 0; l < left.size() || r < right.size();){
      |                         ~~^~~~~~~~~~~~~
monster.cpp:28:46: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   for(int l = 0, r = 0; l < left.size() || r < right.size();){
      |                                            ~~^~~~~~~~~~~~~~
monster.cpp:29:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     if(r == right.size() || (l < left.size() && ask(right[r], left[l]))) res.push_back(left[l++]);
      |        ~~^~~~~~~~~~~~~~~
monster.cpp:29:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     if(r == right.size() || (l < left.size() && ask(right[r], left[l]))) res.push_back(left[l++]);
      |                              ~~^~~~~~~~~~~~~
monster.cpp: In function 'void correct_long(std::vector<int>&, int)':
monster.cpp:37:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |   while(i+l+1 < v.size() && ask(v[i], v[i+l+1])) l++;
      |         ~~~~~~^~~~~~~~~~
monster.cpp: In function 'void correct(std::vector<int>&, int)':
monster.cpp:43:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |   while(i+l < v.size() && !ask(v[i-1], v[i+l])) l++;
      |         ~~~~^~~~~~~~~~
monster.cpp: In function 'std::vector<int> Solve(int)':
monster.cpp:55:16: warning: unused variable 'j' [-Wunused-variable]
   55 |   int cnt = 0, j = 0;
      |                ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4184 KB Output is correct
2 Correct 3 ms 4184 KB Output is correct
3 Correct 3 ms 4184 KB Output is correct
4 Correct 2 ms 4184 KB Output is correct
5 Correct 2 ms 4184 KB Output is correct
6 Correct 2 ms 4184 KB Output is correct
7 Correct 4 ms 4184 KB Output is correct
8 Correct 3 ms 4184 KB Output is correct
9 Correct 3 ms 4296 KB Output is correct
10 Correct 3 ms 4184 KB Output is correct
11 Correct 3 ms 4184 KB Output is correct
12 Correct 3 ms 4184 KB Output is correct
13 Correct 3 ms 4184 KB Output is correct
14 Correct 3 ms 4200 KB Output is correct
15 Correct 3 ms 4184 KB Output is correct
16 Correct 11 ms 4184 KB Output is correct
17 Correct 10 ms 4184 KB Output is correct
18 Correct 10 ms 4184 KB Output is correct
19 Correct 11 ms 4184 KB Output is correct
20 Correct 10 ms 4184 KB Output is correct
21 Correct 3 ms 4184 KB Output is correct
22 Correct 3 ms 4184 KB Output is correct
23 Correct 3 ms 4184 KB Output is correct
24 Correct 2 ms 4184 KB Output is correct
25 Correct 3 ms 4184 KB Output is correct
26 Correct 11 ms 4288 KB Output is correct
27 Correct 3 ms 4184 KB Output is correct
28 Correct 3 ms 4184 KB Output is correct
29 Correct 2 ms 4184 KB Output is correct
30 Correct 3 ms 4184 KB Output is correct
31 Correct 3 ms 4184 KB Output is correct
32 Correct 9 ms 4184 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4184 KB Output is correct
2 Correct 3 ms 4184 KB Output is correct
3 Correct 3 ms 4184 KB Output is correct
4 Correct 2 ms 4184 KB Output is correct
5 Correct 2 ms 4184 KB Output is correct
6 Correct 2 ms 4184 KB Output is correct
7 Correct 4 ms 4184 KB Output is correct
8 Correct 3 ms 4184 KB Output is correct
9 Correct 3 ms 4296 KB Output is correct
10 Correct 3 ms 4184 KB Output is correct
11 Correct 3 ms 4184 KB Output is correct
12 Correct 3 ms 4184 KB Output is correct
13 Correct 3 ms 4184 KB Output is correct
14 Correct 3 ms 4200 KB Output is correct
15 Correct 3 ms 4184 KB Output is correct
16 Correct 11 ms 4184 KB Output is correct
17 Correct 10 ms 4184 KB Output is correct
18 Correct 10 ms 4184 KB Output is correct
19 Correct 11 ms 4184 KB Output is correct
20 Correct 10 ms 4184 KB Output is correct
21 Correct 3 ms 4184 KB Output is correct
22 Correct 3 ms 4184 KB Output is correct
23 Correct 3 ms 4184 KB Output is correct
24 Correct 2 ms 4184 KB Output is correct
25 Correct 3 ms 4184 KB Output is correct
26 Correct 11 ms 4288 KB Output is correct
27 Correct 3 ms 4184 KB Output is correct
28 Correct 3 ms 4184 KB Output is correct
29 Correct 2 ms 4184 KB Output is correct
30 Correct 3 ms 4184 KB Output is correct
31 Correct 3 ms 4184 KB Output is correct
32 Correct 9 ms 4184 KB Output is correct
33 Correct 52 ms 4652 KB Output is correct
34 Correct 48 ms 4696 KB Output is correct
35 Correct 56 ms 4696 KB Output is correct
36 Correct 59 ms 4696 KB Output is correct
37 Correct 65 ms 4908 KB Output is correct
38 Correct 59 ms 4648 KB Output is correct
39 Correct 45 ms 4944 KB Output is correct
40 Correct 59 ms 4692 KB Output is correct
41 Correct 70 ms 4688 KB Output is correct
42 Correct 60 ms 4440 KB Output is correct
43 Correct 72 ms 4440 KB Output is correct
44 Correct 58 ms 4652 KB Output is correct

Subtask #3
68.0 / 75.0

# Verdict Execution time Memory Grader output
1 Partially correct 62 ms 4444 KB Partially correct
2 Partially correct 51 ms 4436 KB Partially correct
3 Partially correct 60 ms 4412 KB Partially correct
4 Partially correct 44 ms 4652 KB Partially correct
5 Partially correct 57 ms 4440 KB Partially correct
6 Correct 63 ms 4396 KB Output is correct
7 Correct 45 ms 4696 KB Output is correct
8 Partially correct 59 ms 4696 KB Partially correct
9 Partially correct 49 ms 4688 KB Partially correct
10 Partially correct 51 ms 4668 KB Partially correct
11 Partially correct 62 ms 4692 KB Partially correct
12 Partially correct 63 ms 4440 KB Partially correct
13 Correct 55 ms 4696 KB Output is correct
14 Correct 47 ms 4648 KB Output is correct
15 Correct 28 ms 4688 KB Output is correct
16 Correct 41 ms 4620 KB Output is correct
17 Partially correct 55 ms 4440 KB Partially correct
18 Correct 43 ms 4440 KB Output is correct