oj.uz

Submission #1067220

# Submission time Handle Problem Language Result Execution time Memory
1067220 2024-08-20T12:58:41 Z ZanP Beech Tree (IOI23_beechtree) C++17
22 / 100
 213 ms 143344 KB 
#include "beechtree.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <unordered_map>
#include <unordered_set>
using namespace std;

int n, m;
vector<vector<int>> pov;
vector<int> beautiful, c;

int cur_d;
vector<int> dfs(int u) {
    int nn = 1 + pov[u].size();
    if (nn == 1) { cur_d = 0; return {}; }
    unordered_set<int> contains;
    vector<vector<int>> a(nn);
    vector<pair<int, pair<int, int>>> sub(nn);
    int max_d = 0;
    for (int i = 0; i < nn - 1; i++) {
        int v = pov[u][i];
        if (contains.count(c[v])) {
            beautiful[u] = 0;
        }
        contains.insert(c[v]);
        a[0].push_back(c[v]);
        a[i + 1] = dfs(v);
        max_d = max(cur_d, max_d);
        sub[i + 1] = {  -(int)(a[i + 1].size()), {i + 1, cur_d}};
        if (!beautiful[v]) { beautiful[u] = 0; }
    }
    if (!beautiful[u]) { return {}; }
    max_d++;
    sub[0] = { -nn + 1, {0,max_d} };
    sort(a[0].begin(), a[0].end());
    sort(sub.begin(), sub.end());

    for (int i = 1; i < nn; i++) {
        int l = 0;
        if (sub[i].second.second > sub[i - 1].second.second) { beautiful[u] = 0; return {}; }
        int c_i = sub[i].second.first, prev_i = sub[i - 1].second.first;
        for (int j = 0; j < a[c_i].size(); j++) {
            while (a[prev_i][l] < a[c_i][j]) {
                l++;
                if (l >= a[prev_i].size()) {
                    l--; break;
                }
            }
            if (a[prev_i][l] != a[c_i][j]) {
                beautiful[u] = 0; return {};
            }
        }
    }
    cur_d = max_d;
    return a[0];

}

vector<int> beechtree(int N, int M, vector<int> P, vector<int> C)
{
    pov.clear();
    beautiful.clear();
    c.clear();
    n = N;
    c = C;
    pov.resize(n);
    unordered_map<int, int> comp;
    for (int i = 1; i < n; i++) {
        pov[P[i]].push_back(i);
        if (!comp.count(c[i])) { comp[c[i]] = comp.size(); }
        c[i] = comp[c[i]];
    }
    m = comp.size();
    beautiful.resize(n, 1);
    dfs(0);
    return beautiful;
}

// int main() {
//     vector<int> ans = beechtree(4, 2, { -1, 0, 0, 0 }, { 0, 1, 1, 2 });
//     for (int i = 0; i < ans.size(); i++) {
//         cout << ans[i] << ' ';
//     }
//     cout << '\n';
//     ans.clear();
//     ans = beechtree(18, 3, { -1, 0, 0, 0, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 5, 10, 11, 11 }, { 0, 1, 2, 3, 1, 2, 3, 1, 3, 3, 2, 1, 1, 2, 2, 1, 2, 3 });
//     for (int i = 0; i < ans.size(); i++) {
//         cout << ans[i] << ' ';
//     }
//     cout << '\n';
//     ans.clear();
//     ans = beechtree(7, 2, { -1, 0, 1, 1, 0, 4, 5 }, { 0, 1, 1, 2, 2, 1, 1 });
//     for (int i = 0; i < ans.size(); i++) {
//         cout << ans[i] << ' ';
//     }
//     cout << '\n';
// }

Compilation message

beechtree.cpp: In function 'std::vector<int> dfs(int)':
beechtree.cpp:43:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         for (int j = 0; j < a[c_i].size(); j++) {
      |                         ~~^~~~~~~~~~~~~~~
beechtree.cpp:46:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |                 if (l >= a[prev_i].size()) {
      |                     ~~^~~~~~~~~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct

Subtask #1
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Incorrect 1 ms 348 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
15 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 208 ms 143344 KB Output is correct
8 Correct 196 ms 141768 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 2 ms 1732 KB Output is correct
14 Correct 2 ms 1628 KB Output is correct
15 Correct 2 ms 1628 KB Output is correct
16 Correct 3 ms 1624 KB Output is correct
17 Correct 205 ms 136884 KB Output is correct
18 Correct 185 ms 137296 KB Output is correct
19 Correct 204 ms 141512 KB Output is correct
20 Correct 213 ms 142600 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 36 ms 7676 KB Output is correct
16 Correct 36 ms 7312 KB Output is correct
17 Correct 38 ms 7252 KB Output is correct
18 Correct 35 ms 7504 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 208 ms 143344 KB Output is correct
6 Correct 196 ms 141768 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 89 ms 28988 KB Output is correct
12 Correct 76 ms 19064 KB Output is correct

Subtask #5
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Incorrect 1 ms 348 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
18 Halted 0 ms 0 KB -

Subtask #6
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Incorrect 1 ms 348 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
11 Halted 0 ms 0 KB -

Subtask #7
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Incorrect 1 ms 348 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
18 Halted 0 ms 0 KB -

Subtask #8
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Incorrect 1 ms 348 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
11 Halted 0 ms 0 KB -

Subtask #9
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Incorrect 1 ms 348 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
18 Halted 0 ms 0 KB -