oj.uz

Submission #922951

# Submission time Handle Problem Language Result Execution time Memory
922951 2024-02-06T10:43:02 Z boris_mihov Minerals (JOI19_minerals) C++17
90 / 100
 38 ms 4960 KB 
#include "minerals.h"
#include <algorithm>
#include <iostream>
#include <numeric>
#include <cassert>
#include <random>
#include <vector>
#include <queue>
 
typedef long long llong;
const int MAXN = 86000 + 10;
const int INF  = 1e9;
 
int n;
int min[MAXN];
int with[MAXN];
int perm[MAXN];
bool isIn[MAXN];
int taken[MAXN];
int taken0[MAXN];
int taken1[MAXN];
int taken2[MAXN];
std::vector <int> unique;
std::vector <int> second;
std::mt19937 rng(69420);
int to[MAXN];
 
int countDiff;
int query(int idx)
{
    isIn[idx] ^= 1;
    return countDiff = Query(perm[idx]);
}
 
void answer(int a, int b)
{
    Answer(perm[a], perm[b]);
}
 
void Solve(int N) 
{
    n = N;
    std::iota(perm + 1, perm + 1 + 2 * n, 1);
    std::shuffle(perm + 1, perm + 1 + 2 * n, rng);
 
    int cnt = 0;
    for (int i = 1 ; i <= 2 * n ; ++i)
    {
        int last = countDiff;
        if (unique.size() < n && (second.size() == n || query(i) > last))
        {
            unique.push_back(i);
        } else
        {
            to[i] = unique.size();
            second.push_back(i);
        }
    }
 
    assert(unique.size() == n);
    assert(second.size() == n);
 
    int lg = 0;
    while ((1 << lg + 1) < n)
    {
        lg++;
    }
 
    int maskFound = 0;
    std::vector <int> order = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
    for (int &bit : order)
    {
        // std::cout << "  new bit: " << bit << '\n';        
        std::fill(taken, taken + n, 0);
        std::fill(taken0, taken0 + n, 0);
        std::fill(taken1, taken1 + n, 0);
        std::fill(taken2, taken2 + n, 0);
        std::fill(min, min + n, INF);

        int cnt = 0;
        for (int i = 0 ; i < n ; ++i)   
        {
            // std::cout << "prefix: " << i << ' ' << (maskFound & i) << '\n';
            taken[i & maskFound]++;
            taken2[i & maskFound]++;
            if (i & (1 << bit)) taken1[i & maskFound]++;
            else taken0[i & maskFound]++;

            if (((i & (1 << bit)) > 0) != isIn[unique[i]])
            {
                if (bit < 15 || cnt >= 1500) query(unique[i]);
                cnt++;
            }
 
            if (((i & (1 << bit)) > 0))
            {
                min[i & maskFound] = std::min(min[i & maskFound], i);
            }
        }
 
        // std::cout << "zero: " << taken[0] << ' ' << n << '\n'; 
        // if (bit == 15) std::reverse(second.begin(), second.end());
        for (int i = 0 ; i < n ; ++i)
        {
            taken[with[second[i]]]--;
            if ((with[second[i]] | (1 << bit)) >= to[second[i]])
            {
                taken0[with[second[i]]]--;
                continue;
            }
 
            if (taken1[with[second[i]]] == 0)
            {
                taken0[with[second[i]]]--;
                continue;
            }
 
            if (taken0[with[second[i]]] == 0)
            {
                with[second[i]] |= (1 << bit);
                taken1[with[second[i]]]--;
                continue;
            }
            
            int curr = countDiff;   
            int next = query(second[i]);
            if (curr == next)
            {
                taken1[with[second[i]]]--;
                with[second[i]] |= (1 << bit);
            } else
            {
                taken0[with[second[i]]]--;
            }
        }
    
        maskFound |= (1 << bit);
    }
 
    for (int i = 0 ; i < n ; ++i)
    {
        // if (!(1 <= unique[with[second[i]]] && unique[with[second[i]]] <= 2 * n))
        // {
        //     std::cout << "the fuck: " << second[i] << ' ' << with[second[i]] << ' ' << unique[with[second[i]]] << '\n';
        // }
        answer(second[i], unique[with[second[i]]]);
    }
}

Compilation message

minerals.cpp: In function 'void Solve(int)':
minerals.cpp:50:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   50 |         if (unique.size() < n && (second.size() == n || query(i) > last))
      |             ~~~~~~~~~~~~~~^~~
minerals.cpp:50:49: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   50 |         if (unique.size() < n && (second.size() == n || query(i) > last))
      |                                   ~~~~~~~~~~~~~~^~~~
In file included from /usr/include/c++/10/cassert:44,
                 from minerals.cpp:5:
minerals.cpp:60:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   60 |     assert(unique.size() == n);
      |            ~~~~~~~~~~~~~~^~~~
minerals.cpp:61:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   61 |     assert(second.size() == n);
      |            ~~~~~~~~~~~~~~^~~~
minerals.cpp:64:21: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   64 |     while ((1 << lg + 1) < n)
      |                  ~~~^~~
minerals.cpp:46:9: warning: unused variable 'cnt' [-Wunused-variable]
   46 |     int cnt = 0;
      |         ^~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 3 ms 2648 KB Output is correct
4 Correct 5 ms 2904 KB Output is correct
5 Correct 11 ms 3128 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 3 ms 2648 KB Output is correct
8 Correct 5 ms 2904 KB Output is correct
9 Correct 11 ms 3128 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3160 KB Output is correct
12 Correct 10 ms 3120 KB Output is correct
13 Correct 9 ms 3160 KB Output is correct
14 Correct 13 ms 3160 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 3 ms 2648 KB Output is correct
8 Correct 5 ms 2904 KB Output is correct
9 Correct 11 ms 3128 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3160 KB Output is correct
12 Correct 10 ms 3120 KB Output is correct
13 Correct 9 ms 3160 KB Output is correct
14 Correct 13 ms 3160 KB Output is correct
15 Correct 34 ms 4576 KB Output is correct
16 Correct 31 ms 4432 KB Output is correct
17 Correct 28 ms 4824 KB Output is correct
18 Correct 27 ms 4568 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 3 ms 2648 KB Output is correct
8 Correct 5 ms 2904 KB Output is correct
9 Correct 11 ms 3128 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3160 KB Output is correct
12 Correct 10 ms 3120 KB Output is correct
13 Correct 9 ms 3160 KB Output is correct
14 Correct 13 ms 3160 KB Output is correct
15 Correct 34 ms 4576 KB Output is correct
16 Correct 31 ms 4432 KB Output is correct
17 Correct 28 ms 4824 KB Output is correct
18 Correct 27 ms 4568 KB Output is correct
19 Correct 34 ms 4600 KB Output is correct
20 Correct 30 ms 4620 KB Output is correct
21 Correct 31 ms 4580 KB Output is correct
22 Correct 29 ms 4852 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 3 ms 2648 KB Output is correct
8 Correct 5 ms 2904 KB Output is correct
9 Correct 11 ms 3128 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3160 KB Output is correct
12 Correct 10 ms 3120 KB Output is correct
13 Correct 9 ms 3160 KB Output is correct
14 Correct 13 ms 3160 KB Output is correct
15 Correct 34 ms 4576 KB Output is correct
16 Correct 31 ms 4432 KB Output is correct
17 Correct 28 ms 4824 KB Output is correct
18 Correct 27 ms 4568 KB Output is correct
19 Correct 34 ms 4600 KB Output is correct
20 Correct 30 ms 4620 KB Output is correct
21 Correct 31 ms 4580 KB Output is correct
22 Correct 29 ms 4852 KB Output is correct
23 Correct 29 ms 4676 KB Output is correct
24 Correct 30 ms 4588 KB Output is correct
25 Correct 30 ms 4696 KB Output is correct
26 Correct 32 ms 4512 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 3 ms 2648 KB Output is correct
8 Correct 5 ms 2904 KB Output is correct
9 Correct 11 ms 3128 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3160 KB Output is correct
12 Correct 10 ms 3120 KB Output is correct
13 Correct 9 ms 3160 KB Output is correct
14 Correct 13 ms 3160 KB Output is correct
15 Correct 34 ms 4576 KB Output is correct
16 Correct 31 ms 4432 KB Output is correct
17 Correct 28 ms 4824 KB Output is correct
18 Correct 27 ms 4568 KB Output is correct
19 Correct 34 ms 4600 KB Output is correct
20 Correct 30 ms 4620 KB Output is correct
21 Correct 31 ms 4580 KB Output is correct
22 Correct 29 ms 4852 KB Output is correct
23 Correct 29 ms 4676 KB Output is correct
24 Correct 30 ms 4588 KB Output is correct
25 Correct 30 ms 4696 KB Output is correct
26 Correct 32 ms 4512 KB Output is correct
27 Correct 36 ms 4572 KB Output is correct
28 Correct 33 ms 4580 KB Output is correct
29 Correct 30 ms 4960 KB Output is correct
30 Correct 31 ms 4696 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 3 ms 2648 KB Output is correct
8 Correct 5 ms 2904 KB Output is correct
9 Correct 11 ms 3128 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3160 KB Output is correct
12 Correct 10 ms 3120 KB Output is correct
13 Correct 9 ms 3160 KB Output is correct
14 Correct 13 ms 3160 KB Output is correct
15 Correct 34 ms 4576 KB Output is correct
16 Correct 31 ms 4432 KB Output is correct
17 Correct 28 ms 4824 KB Output is correct
18 Correct 27 ms 4568 KB Output is correct
19 Correct 34 ms 4600 KB Output is correct
20 Correct 30 ms 4620 KB Output is correct
21 Correct 31 ms 4580 KB Output is correct
22 Correct 29 ms 4852 KB Output is correct
23 Correct 29 ms 4676 KB Output is correct
24 Correct 30 ms 4588 KB Output is correct
25 Correct 30 ms 4696 KB Output is correct
26 Correct 32 ms 4512 KB Output is correct
27 Correct 36 ms 4572 KB Output is correct
28 Correct 33 ms 4580 KB Output is correct
29 Correct 30 ms 4960 KB Output is correct
30 Correct 31 ms 4696 KB Output is correct
31 Correct 33 ms 4752 KB Output is correct
32 Correct 32 ms 4688 KB Output is correct
33 Correct 32 ms 4804 KB Output is correct
34 Correct 31 ms 4448 KB Output is correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 3 ms 2648 KB Output is correct
8 Correct 5 ms 2904 KB Output is correct
9 Correct 11 ms 3128 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3160 KB Output is correct
12 Correct 10 ms 3120 KB Output is correct
13 Correct 9 ms 3160 KB Output is correct
14 Correct 13 ms 3160 KB Output is correct
15 Correct 34 ms 4576 KB Output is correct
16 Correct 31 ms 4432 KB Output is correct
17 Correct 28 ms 4824 KB Output is correct
18 Correct 27 ms 4568 KB Output is correct
19 Correct 34 ms 4600 KB Output is correct
20 Correct 30 ms 4620 KB Output is correct
21 Correct 31 ms 4580 KB Output is correct
22 Correct 29 ms 4852 KB Output is correct
23 Correct 29 ms 4676 KB Output is correct
24 Correct 30 ms 4588 KB Output is correct
25 Correct 30 ms 4696 KB Output is correct
26 Correct 32 ms 4512 KB Output is correct
27 Correct 36 ms 4572 KB Output is correct
28 Correct 33 ms 4580 KB Output is correct
29 Correct 30 ms 4960 KB Output is correct
30 Correct 31 ms 4696 KB Output is correct
31 Correct 33 ms 4752 KB Output is correct
32 Correct 32 ms 4688 KB Output is correct
33 Correct 32 ms 4804 KB Output is correct
34 Correct 31 ms 4448 KB Output is correct
35 Incorrect 38 ms 4360 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -