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답안 #796484

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
796484 2023-07-28T12:31:00 Z AbdullahMohammedAhmad Minerals (JOI19_minerals) C++14
70 / 100
 89 ms 9796 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]++;
                }
            }
        }
    }
    nodes = ceil(log2(n));
    for(int i = 0; i < nodes; i++)
    {
        for(int j = 0; j < nodes; j++)
        {
            cost[i][j] = cost[j][i] = have[i]+have[j]-2*common[i][j];
        }
    }
    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);
    }
    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 'void Solve(int)':
minerals.cpp:115:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  115 |     assert(p1.size() == n && p2.size() == n);
      |            ~~~~~~~~~~^~~~
minerals.cpp:115:40: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  115 |     assert(p1.size() == n && p2.size() == n);
      |                              ~~~~~~~~~~^~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct

Subtask #2
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 2 ms 748 KB Output is correct
3 Correct 4 ms 976 KB Output is correct
4 Correct 8 ms 1628 KB Output is correct
5 Correct 20 ms 2852 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 2 ms 748 KB Output is correct
7 Correct 4 ms 976 KB Output is correct
8 Correct 8 ms 1628 KB Output is correct
9 Correct 20 ms 2852 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 15 ms 2608 KB Output is correct
12 Correct 18 ms 2812 KB Output is correct
13 Correct 18 ms 2896 KB Output is correct
14 Correct 19 ms 2760 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 2 ms 748 KB Output is correct
7 Correct 4 ms 976 KB Output is correct
8 Correct 8 ms 1628 KB Output is correct
9 Correct 20 ms 2852 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 15 ms 2608 KB Output is correct
12 Correct 18 ms 2812 KB Output is correct
13 Correct 18 ms 2896 KB Output is correct
14 Correct 19 ms 2760 KB Output is correct
15 Correct 85 ms 9712 KB Output is correct
16 Correct 81 ms 9712 KB Output is correct
17 Correct 89 ms 9796 KB Output is correct
18 Correct 78 ms 9560 KB Output is correct

Subtask #5
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 2 ms 748 KB Output is correct
7 Correct 4 ms 976 KB Output is correct
8 Correct 8 ms 1628 KB Output is correct
9 Correct 20 ms 2852 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 15 ms 2608 KB Output is correct
12 Correct 18 ms 2812 KB Output is correct
13 Correct 18 ms 2896 KB Output is correct
14 Correct 19 ms 2760 KB Output is correct
15 Correct 85 ms 9712 KB Output is correct
16 Correct 81 ms 9712 KB Output is correct
17 Correct 89 ms 9796 KB Output is correct
18 Correct 78 ms 9560 KB Output is correct
19 Incorrect 85 ms 9480 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 2 ms 748 KB Output is correct
7 Correct 4 ms 976 KB Output is correct
8 Correct 8 ms 1628 KB Output is correct
9 Correct 20 ms 2852 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 15 ms 2608 KB Output is correct
12 Correct 18 ms 2812 KB Output is correct
13 Correct 18 ms 2896 KB Output is correct
14 Correct 19 ms 2760 KB Output is correct
15 Correct 85 ms 9712 KB Output is correct
16 Correct 81 ms 9712 KB Output is correct
17 Correct 89 ms 9796 KB Output is correct
18 Correct 78 ms 9560 KB Output is correct
19 Incorrect 85 ms 9480 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 2 ms 748 KB Output is correct
7 Correct 4 ms 976 KB Output is correct
8 Correct 8 ms 1628 KB Output is correct
9 Correct 20 ms 2852 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 15 ms 2608 KB Output is correct
12 Correct 18 ms 2812 KB Output is correct
13 Correct 18 ms 2896 KB Output is correct
14 Correct 19 ms 2760 KB Output is correct
15 Correct 85 ms 9712 KB Output is correct
16 Correct 81 ms 9712 KB Output is correct
17 Correct 89 ms 9796 KB Output is correct
18 Correct 78 ms 9560 KB Output is correct
19 Incorrect 85 ms 9480 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 2 ms 748 KB Output is correct
7 Correct 4 ms 976 KB Output is correct
8 Correct 8 ms 1628 KB Output is correct
9 Correct 20 ms 2852 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 15 ms 2608 KB Output is correct
12 Correct 18 ms 2812 KB Output is correct
13 Correct 18 ms 2896 KB Output is correct
14 Correct 19 ms 2760 KB Output is correct
15 Correct 85 ms 9712 KB Output is correct
16 Correct 81 ms 9712 KB Output is correct
17 Correct 89 ms 9796 KB Output is correct
18 Correct 78 ms 9560 KB Output is correct
19 Incorrect 85 ms 9480 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 2 ms 748 KB Output is correct
7 Correct 4 ms 976 KB Output is correct
8 Correct 8 ms 1628 KB Output is correct
9 Correct 20 ms 2852 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 15 ms 2608 KB Output is correct
12 Correct 18 ms 2812 KB Output is correct
13 Correct 18 ms 2896 KB Output is correct
14 Correct 19 ms 2760 KB Output is correct
15 Correct 85 ms 9712 KB Output is correct
16 Correct 81 ms 9712 KB Output is correct
17 Correct 89 ms 9796 KB Output is correct
18 Correct 78 ms 9560 KB Output is correct
19 Incorrect 85 ms 9480 KB Wrong Answer [2]
20 Halted 0 ms 0 KB -