oj.uz

Submission #922931

# Submission time Handle Problem Language Result Execution time Memory
922931 2024-02-06T10:02:08 Z boris_mihov Minerals (JOI19_minerals) C++17
85 / 100
 38 ms 5312 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);
        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]])
            {
                query(unique[i]);
            }

            if (isIn[unique[i]])
            {
                min[i & maskFound] = std::min(min[i & maskFound], i);
            }
        }

        // std::cout << "zero: " << taken[0] << ' ' << n << '\n'; 
        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 0 ms 2392 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 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 2 ms 2392 KB Output is correct
3 Correct 2 ms 600 KB Output is correct
4 Correct 5 ms 1112 KB Output is correct
5 Correct 9 ms 1624 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 2 ms 600 KB Output is correct
8 Correct 5 ms 1112 KB Output is correct
9 Correct 9 ms 1624 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3084 KB Output is correct
12 Correct 9 ms 1624 KB Output is correct
13 Correct 11 ms 1628 KB Output is correct
14 Correct 9 ms 3160 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 2 ms 600 KB Output is correct
8 Correct 5 ms 1112 KB Output is correct
9 Correct 9 ms 1624 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3084 KB Output is correct
12 Correct 9 ms 1624 KB Output is correct
13 Correct 11 ms 1628 KB Output is correct
14 Correct 9 ms 3160 KB Output is correct
15 Correct 30 ms 4468 KB Output is correct
16 Correct 31 ms 4576 KB Output is correct
17 Correct 32 ms 5012 KB Output is correct
18 Correct 26 ms 5312 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 2 ms 600 KB Output is correct
8 Correct 5 ms 1112 KB Output is correct
9 Correct 9 ms 1624 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3084 KB Output is correct
12 Correct 9 ms 1624 KB Output is correct
13 Correct 11 ms 1628 KB Output is correct
14 Correct 9 ms 3160 KB Output is correct
15 Correct 30 ms 4468 KB Output is correct
16 Correct 31 ms 4576 KB Output is correct
17 Correct 32 ms 5012 KB Output is correct
18 Correct 26 ms 5312 KB Output is correct
19 Correct 29 ms 4648 KB Output is correct
20 Correct 31 ms 4620 KB Output is correct
21 Correct 28 ms 4672 KB Output is correct
22 Correct 27 ms 4732 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 2 ms 600 KB Output is correct
8 Correct 5 ms 1112 KB Output is correct
9 Correct 9 ms 1624 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3084 KB Output is correct
12 Correct 9 ms 1624 KB Output is correct
13 Correct 11 ms 1628 KB Output is correct
14 Correct 9 ms 3160 KB Output is correct
15 Correct 30 ms 4468 KB Output is correct
16 Correct 31 ms 4576 KB Output is correct
17 Correct 32 ms 5012 KB Output is correct
18 Correct 26 ms 5312 KB Output is correct
19 Correct 29 ms 4648 KB Output is correct
20 Correct 31 ms 4620 KB Output is correct
21 Correct 28 ms 4672 KB Output is correct
22 Correct 27 ms 4732 KB Output is correct
23 Correct 30 ms 4584 KB Output is correct
24 Correct 30 ms 4688 KB Output is correct
25 Correct 30 ms 4688 KB Output is correct
26 Correct 29 ms 4348 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 2 ms 600 KB Output is correct
8 Correct 5 ms 1112 KB Output is correct
9 Correct 9 ms 1624 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3084 KB Output is correct
12 Correct 9 ms 1624 KB Output is correct
13 Correct 11 ms 1628 KB Output is correct
14 Correct 9 ms 3160 KB Output is correct
15 Correct 30 ms 4468 KB Output is correct
16 Correct 31 ms 4576 KB Output is correct
17 Correct 32 ms 5012 KB Output is correct
18 Correct 26 ms 5312 KB Output is correct
19 Correct 29 ms 4648 KB Output is correct
20 Correct 31 ms 4620 KB Output is correct
21 Correct 28 ms 4672 KB Output is correct
22 Correct 27 ms 4732 KB Output is correct
23 Correct 30 ms 4584 KB Output is correct
24 Correct 30 ms 4688 KB Output is correct
25 Correct 30 ms 4688 KB Output is correct
26 Correct 29 ms 4348 KB Output is correct
27 Correct 33 ms 4792 KB Output is correct
28 Correct 38 ms 4840 KB Output is correct
29 Correct 29 ms 4836 KB Output is correct
30 Correct 35 ms 4544 KB Output is correct

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 2 ms 600 KB Output is correct
8 Correct 5 ms 1112 KB Output is correct
9 Correct 9 ms 1624 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3084 KB Output is correct
12 Correct 9 ms 1624 KB Output is correct
13 Correct 11 ms 1628 KB Output is correct
14 Correct 9 ms 3160 KB Output is correct
15 Correct 30 ms 4468 KB Output is correct
16 Correct 31 ms 4576 KB Output is correct
17 Correct 32 ms 5012 KB Output is correct
18 Correct 26 ms 5312 KB Output is correct
19 Correct 29 ms 4648 KB Output is correct
20 Correct 31 ms 4620 KB Output is correct
21 Correct 28 ms 4672 KB Output is correct
22 Correct 27 ms 4732 KB Output is correct
23 Correct 30 ms 4584 KB Output is correct
24 Correct 30 ms 4688 KB Output is correct
25 Correct 30 ms 4688 KB Output is correct
26 Correct 29 ms 4348 KB Output is correct
27 Correct 33 ms 4792 KB Output is correct
28 Correct 38 ms 4840 KB Output is correct
29 Correct 29 ms 4836 KB Output is correct
30 Correct 35 ms 4544 KB Output is correct
31 Incorrect 30 ms 3820 KB Wrong Answer [2]
32 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2392 KB Output is correct
3 Correct 0 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 2 ms 600 KB Output is correct
8 Correct 5 ms 1112 KB Output is correct
9 Correct 9 ms 1624 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 6 ms 3084 KB Output is correct
12 Correct 9 ms 1624 KB Output is correct
13 Correct 11 ms 1628 KB Output is correct
14 Correct 9 ms 3160 KB Output is correct
15 Correct 30 ms 4468 KB Output is correct
16 Correct 31 ms 4576 KB Output is correct
17 Correct 32 ms 5012 KB Output is correct
18 Correct 26 ms 5312 KB Output is correct
19 Correct 29 ms 4648 KB Output is correct
20 Correct 31 ms 4620 KB Output is correct
21 Correct 28 ms 4672 KB Output is correct
22 Correct 27 ms 4732 KB Output is correct
23 Correct 30 ms 4584 KB Output is correct
24 Correct 30 ms 4688 KB Output is correct
25 Correct 30 ms 4688 KB Output is correct
26 Correct 29 ms 4348 KB Output is correct
27 Correct 33 ms 4792 KB Output is correct
28 Correct 38 ms 4840 KB Output is correct
29 Correct 29 ms 4836 KB Output is correct
30 Correct 35 ms 4544 KB Output is correct
31 Incorrect 30 ms 3820 KB Wrong Answer [2]
32 Halted 0 ms 0 KB -