oj.uz

Submission #796472

# Submission time Handle Problem Language Result Execution time Memory
796472 2023-07-28T12:17:39 Z AbdullahMohammedAhmad Minerals (JOI19_minerals) C++14
70 / 100
 88 ms 9716 KB 
#include <bits/stdc++.h>
#include "minerals.h"
using namespace std;
 
int common[18][18];
int cost[18][18];
int have[18];
int nodes;
 
int dp[18][1<<19];
int par[18][1<<19];
 
int tsp(int i, int mask)
{
    if(mask == 1<<i)
    {
        return 0;
    }
    if(dp[i][mask] != 0)
    {
        return dp[i][mask];
    }
    int res = INT_MAX;
    for(int j = 0; j < nodes; j++)
    {
        if((mask&(1<<j)) && j != i)
        {
            int now = tsp(j, mask^(1<<i))+cost[j][i];
            if(now < res)
            {
                res = now;
                par[i][mask] = j;
            }
        }
    }
    return dp[i][mask] = res;
}
 
vector<int> get_best_order(int n)
{
    for(int i = 0; (1<<i) < n; i++) {
        for(int k = 0; k < n; k++)
        {
            if(k&(1<<i))
            {
                have[i]++;
            }
        }
        for(int j = i+1; (1<<j) < n; j++)
        {
            for(int k = 0; k < n; k++)
            {
                if(k&(1<<i) && k&(1<<j))
                {
                    common[i][j]++;
                    common[j][i]++;
                }
            }
            cost[i][j] = cost[j][i] = have[i]+have[j]-2*common[i][j];
        }
    }
    nodes = ceil(log2(n));
    int ans = INT_MAX;
    int idx = -1;
    for(int i = 0; i < nodes; i++)
    {
        tsp(i, (1<<nodes)-1);
        if(dp[i][(1<<nodes)-1]+have[i] < ans)
        {
            ans = dp[i][(1<<nodes)-1]+have[i];
            idx = i;
        }
    }
  assert(idx != -1);
    vector<int> path;
    path.push_back(idx);
    int msk = (1<<nodes)-1;
    while(true)
    {
        if(msk == 1<<idx)
        {
            break;
        }
        
        int nxt = par[idx][msk];
        msk^=(1<<idx);
        idx = nxt;
        path.push_back(idx);
    }
  assert(path.size() == nodes);
    return path;
}
 
mt19937 rng(66);
void Solve(int n) {
    vector<int> p1, p2;
    int ans = 0, prevans = -1;
    vector<int> bulanea(2 * n);
    iota(bulanea.begin(), bulanea.end(), 1);
    shuffle(bulanea.begin(), bulanea.end(), rng);
    for(int i: bulanea) {
        ans = Query(i);
        if(ans == prevans) {
            p2.push_back(i);
        } else {
            p1.push_back(i);
        }
        prevans = ans;
    }
    assert(p1.size() == n && p2.size() == n);
    vector<int> pr(n, 0);
    vector<bool> bagat(n, 1);
    vector<int> best_order = get_best_order(n);
    
    for(int bit: best_order) {
        int cntt = 0;
        for(int i = 0; i < n; ++i) {
            if(i >> bit & 1) {
                ++cntt;
                if(!bagat[i]) prevans = Query(p1[i]);
                bagat[i] = 1;
            } else {
                if(bagat[i]) prevans = Query(p1[i]);
                bagat[i] = 0;
            }
        }
        for(int i = 0; i < n && cntt; ++i) {
            if(pr[i] + (1 << bit) >= n) continue;
            int ans = Query(p2[i]);
            if(ans == prevans) {
                pr[i] += (1 << bit);
                --cntt;
            }
            prevans = ans;
        }
    }
    for(int i = 0; i < n; ++i) {
        Answer(p2[i], p1[pr[i]]);
    }
}

Compilation message

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from minerals.cpp:1:
minerals.cpp: In function 'std::vector<int> get_best_order(int)':
minerals.cpp:90:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   90 |   assert(path.size() == nodes);
      |          ~~~~~~~~~~~~^~~~~~~~
minerals.cpp: In function 'void Solve(int)':
minerals.cpp:110:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  110 |     assert(p1.size() == n && p2.size() == n);
      |            ~~~~~~~~~~^~~~
minerals.cpp:110:40: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  110 |     assert(p1.size() == n && p2.size() == n);
      |                              ~~~~~~~~~~^~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 592 KB Output is correct
2 Correct 3 ms 720 KB Output is correct
3 Correct 5 ms 1040 KB Output is correct
4 Correct 11 ms 1616 KB Output is correct
5 Correct 25 ms 2736 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 720 KB Output is correct
7 Correct 5 ms 1040 KB Output is correct
8 Correct 11 ms 1616 KB Output is correct
9 Correct 25 ms 2736 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 16 ms 2692 KB Output is correct
12 Correct 18 ms 2848 KB Output is correct
13 Correct 19 ms 2816 KB Output is correct
14 Correct 18 ms 2768 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 720 KB Output is correct
7 Correct 5 ms 1040 KB Output is correct
8 Correct 11 ms 1616 KB Output is correct
9 Correct 25 ms 2736 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 16 ms 2692 KB Output is correct
12 Correct 18 ms 2848 KB Output is correct
13 Correct 19 ms 2816 KB Output is correct
14 Correct 18 ms 2768 KB Output is correct
15 Correct 80 ms 9684 KB Output is correct
16 Correct 83 ms 9716 KB Output is correct
17 Correct 88 ms 9656 KB Output is correct
18 Correct 85 ms 9568 KB Output is correct

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 720 KB Output is correct
7 Correct 5 ms 1040 KB Output is correct
8 Correct 11 ms 1616 KB Output is correct
9 Correct 25 ms 2736 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 16 ms 2692 KB Output is correct
12 Correct 18 ms 2848 KB Output is correct
13 Correct 19 ms 2816 KB Output is correct
14 Correct 18 ms 2768 KB Output is correct
15 Correct 80 ms 9684 KB Output is correct
16 Correct 83 ms 9716 KB Output is correct
17 Correct 88 ms 9656 KB Output is correct
18 Correct 85 ms 9568 KB Output is correct
19 Incorrect 82 ms 9500 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 720 KB Output is correct
7 Correct 5 ms 1040 KB Output is correct
8 Correct 11 ms 1616 KB Output is correct
9 Correct 25 ms 2736 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 16 ms 2692 KB Output is correct
12 Correct 18 ms 2848 KB Output is correct
13 Correct 19 ms 2816 KB Output is correct
14 Correct 18 ms 2768 KB Output is correct
15 Correct 80 ms 9684 KB Output is correct
16 Correct 83 ms 9716 KB Output is correct
17 Correct 88 ms 9656 KB Output is correct
18 Correct 85 ms 9568 KB Output is correct
19 Incorrect 82 ms 9500 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 720 KB Output is correct
7 Correct 5 ms 1040 KB Output is correct
8 Correct 11 ms 1616 KB Output is correct
9 Correct 25 ms 2736 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 16 ms 2692 KB Output is correct
12 Correct 18 ms 2848 KB Output is correct
13 Correct 19 ms 2816 KB Output is correct
14 Correct 18 ms 2768 KB Output is correct
15 Correct 80 ms 9684 KB Output is correct
16 Correct 83 ms 9716 KB Output is correct
17 Correct 88 ms 9656 KB Output is correct
18 Correct 85 ms 9568 KB Output is correct
19 Incorrect 82 ms 9500 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 720 KB Output is correct
7 Correct 5 ms 1040 KB Output is correct
8 Correct 11 ms 1616 KB Output is correct
9 Correct 25 ms 2736 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 16 ms 2692 KB Output is correct
12 Correct 18 ms 2848 KB Output is correct
13 Correct 19 ms 2816 KB Output is correct
14 Correct 18 ms 2768 KB Output is correct
15 Correct 80 ms 9684 KB Output is correct
16 Correct 83 ms 9716 KB Output is correct
17 Correct 88 ms 9656 KB Output is correct
18 Correct 85 ms 9568 KB Output is correct
19 Incorrect 82 ms 9500 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 2 ms 592 KB Output is correct
6 Correct 3 ms 720 KB Output is correct
7 Correct 5 ms 1040 KB Output is correct
8 Correct 11 ms 1616 KB Output is correct
9 Correct 25 ms 2736 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 16 ms 2692 KB Output is correct
12 Correct 18 ms 2848 KB Output is correct
13 Correct 19 ms 2816 KB Output is correct
14 Correct 18 ms 2768 KB Output is correct
15 Correct 80 ms 9684 KB Output is correct
16 Correct 83 ms 9716 KB Output is correct
17 Correct 88 ms 9656 KB Output is correct
18 Correct 85 ms 9568 KB Output is correct
19 Incorrect 82 ms 9500 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -