oj.uz

Submission #922869

# Submission time Handle Problem Language Result Execution time Memory
922869 2024-02-06T08:32:08 Z boris_mihov Minerals (JOI19_minerals) C++17
75 / 100
 32 ms 4628 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 with[MAXN];
int perm[MAXN];
bool isIn[MAXN];
int taken[MAXN];
std::vector <int> unique;
std::vector <int> second;
std::mt19937 rng(76543);
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++;
    }

    for (int bit = 0 ; bit <= lg ; ++bit)
    {
        int cntIn = 0;
        int cntOut = 0;
        int min = INF;
        
        for (int i = 0 ; i < n ; ++i)
        {
            if (((i & (1 << bit)) > 0) != isIn[unique[i]])
            {
                query(unique[i]);
            }

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

            cntIn += isIn[unique[i]];
            cntOut += !isIn[unique[i]];
        }

        for (int i = 0 ; i < n ; ++i)
        {
            if (cntIn == 0)
            {
                continue;
            }

            if (to[second[i]] < min)
            {
                cntOut--;
                continue;
            }

            if (cntOut == 0)
            {
                with[second[i]] |= (1 << bit);
                continue;
            }

            if (bit == lg && taken[with[second[i]]])
            {
                if (taken[with[second[i]]] == 1)
                {
                    with[second[i]] |= (1 << bit);
                }

                continue;
            }
            
            int curr = countDiff;
            int next = query(second[i]);
            if (curr == next)
            {
                if (bit == lg) taken[with[second[i]]] = 2;
                with[second[i]] |= (1 << bit);
                cntIn--;
            } else
            {
                if (bit == lg) taken[with[second[i]]] = 1;
                cntOut--;
            }
        }
    }

    for (int i = 0 ; i < n ; ++i)
    {
        answer(second[i], unique[with[second[i]]]);
    }
}

Compilation message

minerals.cpp: In function 'void Solve(int)':
minerals.cpp:46:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   46 |         if (unique.size() < n && (second.size() == n || query(i) > last))
      |             ~~~~~~~~~~~~~~^~~
minerals.cpp:46:49: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   46 |         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:56:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   56 |     assert(unique.size() == n);
      |            ~~~~~~~~~~~~~~^~~~
minerals.cpp:57:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   57 |     assert(second.size() == n);
      |            ~~~~~~~~~~~~~~^~~~
minerals.cpp:60:21: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   60 |     while ((1 << lg + 1) < n)
      |                  ~~~^~~
minerals.cpp:42:9: warning: unused variable 'cnt' [-Wunused-variable]
   42 |     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 1 ms 2564 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 2392 KB Output is correct
4 Correct 4 ms 2548 KB Output is correct
5 Correct 8 ms 2868 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 1 ms 2564 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 2392 KB Output is correct
8 Correct 4 ms 2548 KB Output is correct
9 Correct 8 ms 2868 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 5 ms 2648 KB Output is correct
12 Correct 8 ms 2904 KB Output is correct
13 Correct 9 ms 2904 KB Output is correct
14 Correct 8 ms 2904 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 1 ms 2564 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 2392 KB Output is correct
8 Correct 4 ms 2548 KB Output is correct
9 Correct 8 ms 2868 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 5 ms 2648 KB Output is correct
12 Correct 8 ms 2904 KB Output is correct
13 Correct 9 ms 2904 KB Output is correct
14 Correct 8 ms 2904 KB Output is correct
15 Correct 32 ms 3668 KB Output is correct
16 Correct 27 ms 3680 KB Output is correct
17 Correct 24 ms 4068 KB Output is correct
18 Correct 22 ms 4008 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 1 ms 2564 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 2392 KB Output is correct
8 Correct 4 ms 2548 KB Output is correct
9 Correct 8 ms 2868 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 5 ms 2648 KB Output is correct
12 Correct 8 ms 2904 KB Output is correct
13 Correct 9 ms 2904 KB Output is correct
14 Correct 8 ms 2904 KB Output is correct
15 Correct 32 ms 3668 KB Output is correct
16 Correct 27 ms 3680 KB Output is correct
17 Correct 24 ms 4068 KB Output is correct
18 Correct 22 ms 4008 KB Output is correct
19 Correct 27 ms 3688 KB Output is correct
20 Correct 24 ms 3688 KB Output is correct
21 Correct 28 ms 4304 KB Output is correct
22 Correct 25 ms 4628 KB Output is correct

Subtask #6
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 1 ms 2564 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 2392 KB Output is correct
8 Correct 4 ms 2548 KB Output is correct
9 Correct 8 ms 2868 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 5 ms 2648 KB Output is correct
12 Correct 8 ms 2904 KB Output is correct
13 Correct 9 ms 2904 KB Output is correct
14 Correct 8 ms 2904 KB Output is correct
15 Correct 32 ms 3668 KB Output is correct
16 Correct 27 ms 3680 KB Output is correct
17 Correct 24 ms 4068 KB Output is correct
18 Correct 22 ms 4008 KB Output is correct
19 Correct 27 ms 3688 KB Output is correct
20 Correct 24 ms 3688 KB Output is correct
21 Correct 28 ms 4304 KB Output is correct
22 Correct 25 ms 4628 KB Output is correct
23 Incorrect 27 ms 3696 KB Wrong Answer [2]
24 Halted 0 ms 0 KB -

Subtask #7
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 1 ms 2564 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 2392 KB Output is correct
8 Correct 4 ms 2548 KB Output is correct
9 Correct 8 ms 2868 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 5 ms 2648 KB Output is correct
12 Correct 8 ms 2904 KB Output is correct
13 Correct 9 ms 2904 KB Output is correct
14 Correct 8 ms 2904 KB Output is correct
15 Correct 32 ms 3668 KB Output is correct
16 Correct 27 ms 3680 KB Output is correct
17 Correct 24 ms 4068 KB Output is correct
18 Correct 22 ms 4008 KB Output is correct
19 Correct 27 ms 3688 KB Output is correct
20 Correct 24 ms 3688 KB Output is correct
21 Correct 28 ms 4304 KB Output is correct
22 Correct 25 ms 4628 KB Output is correct
23 Incorrect 27 ms 3696 KB Wrong Answer [2]
24 Halted 0 ms 0 KB -

Subtask #8
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 1 ms 2564 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 2392 KB Output is correct
8 Correct 4 ms 2548 KB Output is correct
9 Correct 8 ms 2868 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 5 ms 2648 KB Output is correct
12 Correct 8 ms 2904 KB Output is correct
13 Correct 9 ms 2904 KB Output is correct
14 Correct 8 ms 2904 KB Output is correct
15 Correct 32 ms 3668 KB Output is correct
16 Correct 27 ms 3680 KB Output is correct
17 Correct 24 ms 4068 KB Output is correct
18 Correct 22 ms 4008 KB Output is correct
19 Correct 27 ms 3688 KB Output is correct
20 Correct 24 ms 3688 KB Output is correct
21 Correct 28 ms 4304 KB Output is correct
22 Correct 25 ms 4628 KB Output is correct
23 Incorrect 27 ms 3696 KB Wrong Answer [2]
24 Halted 0 ms 0 KB -

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 1 ms 2564 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 2392 KB Output is correct
8 Correct 4 ms 2548 KB Output is correct
9 Correct 8 ms 2868 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 5 ms 2648 KB Output is correct
12 Correct 8 ms 2904 KB Output is correct
13 Correct 9 ms 2904 KB Output is correct
14 Correct 8 ms 2904 KB Output is correct
15 Correct 32 ms 3668 KB Output is correct
16 Correct 27 ms 3680 KB Output is correct
17 Correct 24 ms 4068 KB Output is correct
18 Correct 22 ms 4008 KB Output is correct
19 Correct 27 ms 3688 KB Output is correct
20 Correct 24 ms 3688 KB Output is correct
21 Correct 28 ms 4304 KB Output is correct
22 Correct 25 ms 4628 KB Output is correct
23 Incorrect 27 ms 3696 KB Wrong Answer [2]
24 Halted 0 ms 0 KB -