oj.uz

답안 #1095360

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1095360 2024-10-02T01:57:20 Z raphaelp Team Coding (EGOI24_teamcoding) C++14
19 / 100
 65 ms 48964 KB 
#include <bits/stdc++.h>
using namespace std;
void dfs(int x, vector<vector<int>> &AR, vector<int> &depth, int cur)
{
    depth[x] = cur;
    for (int i = 0; i < AR[x].size(); i++)
    {
        dfs(AR[x][i], AR, depth, cur + 1);
    }
}
void dfs2(int x, vector<vector<int>> &AR, vector<vector<pair<int, int>>> &colorpos, vector<int> &available, map<int, int> &M, vector<int> &C, vector<vector<int>> &colors, int cur, int &best, int &best2)
{
    available.push_back(1);
    vector<int> available2;
    map<int, int> M2;
    M[C[x]] += 1;
    for (int i = 0; i < AR[x].size(); i++)
    {
        available2.clear();
        M2.clear();
        dfs2(AR[x][i], AR, colorpos, available2, M2, C, colors, cur + 1, best, best2);
        available2.push_back(0);
        if (available2.size() > available.size())
            swap(available2, available);
        for (int j = 0; j < available2.size(); j++)
        {
            available[j + available.size() - available2.size()] += available2[j];
        }
        if (M2.size() > M.size())
            swap(M, M2);
        for (auto j : M2)
        {
            M[j.first] += j.second;
        }
    }
    if (colors[C[x]].size() <= sqrt(AR.size()))
    {
        int ans1 = 0, ans2 = 0;
        for (int i = 0; i < colorpos[C[x]].size(); i++)
        {
            if (colorpos[C[x]][i].first >= cur && colorpos[C[x]][i].first < cur + available.size())
                ans1 += min(colorpos[C[x]][i].second, available[available.size() - colorpos[C[x]][i].first - 1 + cur]);
        }
        ans2 = ans1 - M[C[x]];
        if (ans1 > best || (ans1 == best && ans2 < best2))
        {
            best = ans1, best2 = ans2;
        }
    }
}
pair<int, int> dfs3(int x, vector<vector<int>> &AR, vector<int> &C, int c, vector<int> &used, vector<int> &maxx, int cur, int &best, int &best2)
{
    vector<int> used2;
    int tot = 0, tot2 = 0;
    if (C[x] == c)
        tot2++;
    used.push_back(0);
    if (maxx[cur] != 0)
    {
        used[0] = 1;
        tot++;
    }
    for (int i = 0; i < AR[x].size(); i++)
    {
        used2.clear();
        pair<int, int> temp = dfs3(AR[x][i], AR, C, c, used2, maxx, cur + 1, best, best2);
        tot2 += temp.second;
        used2.push_back(0);
        if (used2.size() > used.size())
        {
            swap(used2, used);
            swap(tot, temp.first);
        }
        for (int j = 0; j < used2.size(); j++)
        {
            tot -= used[j + used.size() - used2.size()];
            used[j + used.size() - used2.size()] = min(used[j + used.size() - used2.size()] + used2[j], maxx[cur + used2.size() - j - 1]);
            tot += used[j + used.size() - used2.size()];
        }
    }
    if (C[x] == c && (tot > best || (tot == best && tot2 < best2)))
    {
        best = tot, best2 = tot - tot2;
    }
    return {tot, tot2};
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int N, K;
    cin >> N >> K;
    vector<int> C(N);
    vector<vector<int>> colors(K);
    for (int i = 0; i < N; i++)
    {
        cin >> C[i];
        colors[C[i]].push_back(i);
    }
    vector<int> p(N, 0);
    vector<vector<int>> AR(N);
    for (int i = 1; i < N; i++)
    {
        cin >> p[i];
        AR[p[i]].push_back(i);
    }
    vector<int> depth(N);
    vector<vector<pair<int, int>>> colorpos(K);
    dfs(0, AR, depth, 0);
    int best = 0, best2 = 0;
    for (int i = 0; i < K; i++)
    {
        for (int j = 0; j < colors[i].size(); j++)
        {
            colorpos[i].push_back({depth[colors[i][j]], 1});
        }
        sort(colorpos[i].begin(), colorpos[i].end());
        vector<pair<int, int>> temp;
        int cur = 0;
        for (int j = 0; j < colors[i].size(); j++)
        {
            if (j > 0 && colorpos[i][j].first != colorpos[i][j - 1].first)
            {
                temp.push_back({colorpos[i][j - 1].first, cur});
                cur = 0;
            }
            cur++;
        }
        temp.push_back({colorpos[i].back().first, cur});
        swap(temp, colorpos[i]);
    }
    vector<int> available;
    map<int, int> M;
    dfs2(0, AR, colorpos, available, M, C, colors, 0, best, best2);
    for (int i = 0; i < K; i++)
    {
        if (colors[i].size() >= sqrt(N) - 1)
        {
            vector<int> used, maxx(N);
            for (int j = 0; j < colors[i].size(); j++)
                maxx[depth[colors[i][j]]]++;
            pair<int, int> temp = dfs3(0, AR, C, i, used, maxx, 0, best, best2);
        }
    }
    cout << best << ' ' << best2;
}

Compilation message

Main.cpp: In function 'void dfs(int, std::vector<std::vector<int> >&, std::vector<int>&, int)':
Main.cpp:6:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |     for (int i = 0; i < AR[x].size(); i++)
      |                     ~~^~~~~~~~~~~~~~
Main.cpp: In function 'void dfs2(int, std::vector<std::vector<int> >&, std::vector<std::vector<std::pair<int, int> > >&, std::vector<int>&, std::map<int, int>&, std::vector<int>&, std::vector<std::vector<int> >&, int, int&, int&)':
Main.cpp:17:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for (int i = 0; i < AR[x].size(); i++)
      |                     ~~^~~~~~~~~~~~~~
Main.cpp:25:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for (int j = 0; j < available2.size(); j++)
      |                         ~~^~~~~~~~~~~~~~~~~~~
Main.cpp:39:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         for (int i = 0; i < colorpos[C[x]].size(); i++)
      |                         ~~^~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:41:75: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |             if (colorpos[C[x]][i].first >= cur && colorpos[C[x]][i].first < cur + available.size())
Main.cpp: In function 'std::pair<int, int> dfs3(int, std::vector<std::vector<int> >&, std::vector<int>&, int, std::vector<int>&, std::vector<int>&, int, int&, int&)':
Main.cpp:63:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |     for (int i = 0; i < AR[x].size(); i++)
      |                     ~~^~~~~~~~~~~~~~
Main.cpp:74:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |         for (int j = 0; j < used2.size(); j++)
      |                         ~~^~~~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:114:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  114 |         for (int j = 0; j < colors[i].size(); j++)
      |                         ~~^~~~~~~~~~~~~~~~~~
Main.cpp:121:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  121 |         for (int j = 0; j < colors[i].size(); j++)
      |                         ~~^~~~~~~~~~~~~~~~~~
Main.cpp:141:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  141 |             for (int j = 0; j < colors[i].size(); j++)
      |                             ~~^~~~~~~~~~~~~~~~~~
Main.cpp:143:28: warning: variable 'temp' set but not used [-Wunused-but-set-variable]
  143 |             pair<int, int> temp = dfs3(0, AR, C, i, used, maxx, 0, best, best2);
      |                            ^~~~

Subtask #1
0.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Runtime error 0 ms 348 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #2
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 64 ms 48964 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 30 ms 7236 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 860 KB Output is correct
11 Correct 65 ms 27988 KB Output is correct
12 Correct 17 ms 5860 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 51 ms 6860 KB Output is correct
16 Correct 48 ms 6736 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 48 ms 7064 KB Output is correct
20 Correct 47 ms 7096 KB Output is correct
21 Correct 47 ms 7060 KB Output is correct
22 Correct 0 ms 348 KB Output is correct

Subtask #3
0.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Runtime error 0 ms 348 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #4
0.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Runtime error 1 ms 348 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #5
0.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Runtime error 0 ms 348 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -