oj.uz

Submission #854877

# Submission time Handle Problem Language Result Execution time Memory
854877 2023-09-29T08:41:10 Z piOOE Beech Tree (IOI23_beechtree) C++17
0 / 100
 2000 ms 296072 KB 
#include "beechtree.h"
#include <bits/stdc++.h>

using namespace std;

std::vector<int> beechtree(int N, int M, std::vector<int> P, std::vector<int> C) {
    vector<int> sh(C);
    sort(sh.begin(), sh.end());
    sh.resize(unique(sh.begin(), sh.end()) - sh.begin());
    M = size(sh);
    for (int i = 0; i < N; ++i) {
        C[i] = lower_bound(sh.begin(), sh.end(), C[i]) - sh.begin();
    }

    vector<int> ans(N, 1), isOk(N, 1), siz(N, 1);
    vector<vector<int>> adj(N), sub(N);

    for (int i = N - 1; i > 0; --i) {
        adj[P[i]].push_back(i);
    }

    for (int v = N - 1; v >= 0; --v) {
        static vector<int> cnt(M);
        for (int to : adj[v]) {
            cnt[C[to]] = 0;
            isOk[v] &= isOk[to];
        }
        for (int to : adj[v]) {
            siz[v] += siz[to];
            isOk[v] &= ++cnt[C[to]] == 1;
        }
        ans[v] = isOk[v];
        if (!isOk[v]) {
            continue;
        }
        for (int to : adj[v]) {
            sub[v].insert(sub[v].end(), sub[to].begin(), sub[to].end());
            sub[to].clear();
        }
        static vector<int> last(N, -1);
        last[v] = -1;
        for (int x : sub[v]) {
            last[x] = -1;
            ++cnt[C[x]];
        }
        vector<int> ord = sub[v];
        sort(ord.begin(), ord.end(), [&](int x, int y) { return pair{cnt[C[x]], C[x]} > pair{cnt[C[y]], C[y]}; });
        for (int i = 0, j = 0, k = -1; i < size(ord); i = j) {
            int sum = 0;
            while (j < size(ord) && C[ord[j]] == C[ord[i]]) {
                int x = ord[j++];
                while (x != v) {
                    x = P[x];
                    if (last[x] == i) {
                        break;
                    } else if (last[x] != k) {
                        ans[v] = 0;
                        break;
                    }
                    sum += 1;
                    last[x] = i;
                }
                if (!ans[v]) {
                    break;
                }
            }
            if (!ans[v] || sum != j - i) {
                ans[v] = 0;
                break;
            }
            k = i;
        }
        if (!ans[v]) {
            sub[v].push_back(v);
            continue;
        }
        vector<int> q{v};
        for (int i = 0; i < size(q) && ans[v]; ++i) {
            int x = q[i];
            if (i > 0) {
                int c = 0;
                for (int j = 1; j < i; ++j) {
                    c += C[q[j]] == C[x];
                }
                if (P[x] != q[c]) {
                    ans[v] = 0;
                    break;
                }
            }
            sort(adj[x].begin(), adj[x].end(), [&](int a, int b) { return siz[a] > siz[b]; });
            for (int to : adj[x]) {
                q.push_back(to);
            }
        }
        sub[v].push_back(v);
    }

    return ans;
}

Compilation message

beechtree.cpp: In function 'std::vector<int> beechtree(int, int, std::vector<int>, std::vector<int>)':
beechtree.cpp:48:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         for (int i = 0, j = 0, k = -1; i < size(ord); i = j) {
      |                                        ~~^~~~~~~~~~~
beechtree.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |             while (j < size(ord) && C[ord[j]] == C[ord[i]]) {
      |                    ~~^~~~~~~~~~~
beechtree.cpp:78:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |         for (int i = 0; i < size(q) && ans[v]; ++i) {
      |                         ~~^~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 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 388 KB Output is correct
5 Correct 0 ms 344 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 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Incorrect 0 ms 348 KB 2nd lines differ - on the 1st token, expected: '1', found: '0'
21 Halted 0 ms 0 KB -

Subtask #2
0.0 / 5.0

# Verdict Execution time Memory 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 0 ms 388 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Execution timed out 2049 ms 296072 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #3
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 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 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 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 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 72 ms 14172 KB Output is correct
16 Correct 66 ms 13352 KB Output is correct
17 Correct 70 ms 13608 KB Output is correct
18 Execution timed out 2031 ms 14824 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #4
0.0 / 8.0

# Verdict Execution time Memory 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 0 ms 348 KB Output is correct
5 Execution timed out 2049 ms 296072 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #5
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 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 388 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Incorrect 0 ms 348 KB 2nd lines differ - on the 1st token, expected: '1', found: '0'
24 Halted 0 ms 0 KB -

Subtask #6
0.0 / 14.0

# Verdict Execution time Memory 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 0 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 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Incorrect 0 ms 348 KB 2nd lines differ - on the 1st token, expected: '1', found: '0'
17 Halted 0 ms 0 KB -

Subtask #7
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 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 388 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Incorrect 0 ms 348 KB 2nd lines differ - on the 1st token, expected: '1', found: '0'
24 Halted 0 ms 0 KB -

Subtask #8
0.0 / 17.0

# Verdict Execution time Memory 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 0 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 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Incorrect 0 ms 348 KB 2nd lines differ - on the 1st token, expected: '1', found: '0'
17 Halted 0 ms 0 KB -

Subtask #9
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 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 388 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Incorrect 0 ms 348 KB 2nd lines differ - on the 1st token, expected: '1', found: '0'
24 Halted 0 ms 0 KB -