oj.uz

Submission #841634

# Submission time Handle Problem Language Result Execution time Memory
841634 2023-09-01T18:53:22 Z Enchom Beech Tree (IOI23_beechtree) C++17
9 / 100
 2000 ms 247856 KB 
#include "beechtree.h"
#include <bits/stdc++.h>

#define all(x) (x).begin(), (x).end()
#define xx first
#define yy second

using namespace std;
typedef pair<int, int> pii;
const int N = 2e5 + 1;

struct Graph
{
    int cnt[N];
    bool con[N];
    vector<pii> srt[N];
    map<int, vector<int>> col[N];
} graph;

bool check(int v, int u, bool equalStuff)
{
    for (auto &pr : graph.col[v])
    {
        auto &[col, vec] = pr;
        auto it = graph.col[u].find(col);
        if (it == graph.col[u].end() /*|| (!equalStuff && graph.cnt[vec[0]] > graph.cnt[it->yy[0]])*/)
        {
            return false;
        }
    }
    return true;
}

int dfs(int u)
{
    graph.cnt[u] = 1;
    graph.con[u] = true;

    for (auto &pr : graph.col[u])
    {
        auto &[col, vec] = pr;
        graph.con[u] &= vec.size() == 1;

        for (int v : vec)
        {
            int cnv = dfs(v);
            if (cnv == -1)
            {
                graph.con[u] = false;
            }
            else
            {
                graph.cnt[u] += cnv;
            }
            for (pii p : graph.srt[v])
            {
                graph.srt[u].push_back(p);
            }
        }
    }
    graph.srt[u].push_back({graph.cnt[u], u});
    sort(all(graph.srt[u]));

    for (int i = 0; i < graph.srt[u].size() - 1; ++i)
    {
        graph.con[u] = graph.con[u] & check(graph.srt[u][i].yy, graph.srt[u][i + 1].yy, (graph.srt[u][i].xx == graph.srt[u][i + 1].yy));
    }
    return graph.con[u] ? graph.cnt[u] : -1;
}

vector<int> beechtree(int n, int m, vector<int> P, vector<int> C)
{
    for (int i = 1; i < n; ++i)
    {
        int p = P[i];
        int c = C[i];
        if (!graph.col[p].count(c))
        {
            graph.col[p][c] = vector<int>();
        }
        graph.col[p][c].push_back(i);
    }
    dfs(0);

    vector<int> ans;
    for (int i = 0; i < n; ++i)
        ans.push_back(graph.con[i]);
    return ans;
}

Compilation message

beechtree.cpp: In function 'int dfs(int)':
beechtree.cpp:64:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |     for (int i = 0; i < graph.srt[u].size() - 1; ++i)
      |                     ~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15192 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15196 KB Output is correct

Subtask #1
0.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15196 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15316 KB Output is correct
4 Correct 3 ms 15196 KB Output is correct
5 Correct 3 ms 15196 KB Output is correct
6 Correct 3 ms 15196 KB Output is correct
7 Correct 3 ms 15196 KB Output is correct
8 Correct 3 ms 15196 KB Output is correct
9 Incorrect 3 ms 15196 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
10 Halted 0 ms 0 KB -

Subtask #2
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15196 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15316 KB Output is correct
4 Correct 3 ms 15196 KB Output is correct
5 Correct 3 ms 15196 KB Output is correct
6 Correct 3 ms 15196 KB Output is correct
7 Execution timed out 2066 ms 247856 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15196 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15196 KB Output is correct
4 Correct 3 ms 15196 KB Output is correct
5 Correct 3 ms 15304 KB Output is correct
6 Correct 3 ms 15196 KB Output is correct
7 Correct 3 ms 15196 KB Output is correct
8 Correct 3 ms 15196 KB Output is correct
9 Correct 3 ms 15196 KB Output is correct
10 Correct 3 ms 15196 KB Output is correct
11 Correct 3 ms 15540 KB Output is correct
12 Correct 3 ms 15452 KB Output is correct
13 Correct 3 ms 15452 KB Output is correct
14 Correct 4 ms 15452 KB Output is correct
15 Correct 104 ms 34496 KB Output is correct
16 Correct 97 ms 33480 KB Output is correct
17 Correct 87 ms 33732 KB Output is correct
18 Correct 98 ms 34248 KB Output is correct

Subtask #4
0.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15196 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15196 KB Output is correct
4 Correct 3 ms 15196 KB Output is correct
5 Execution timed out 2066 ms 247856 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #5
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15192 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15196 KB Output is correct
4 Correct 3 ms 15196 KB Output is correct
5 Correct 3 ms 15196 KB Output is correct
6 Correct 3 ms 15316 KB Output is correct
7 Correct 3 ms 15196 KB Output is correct
8 Correct 3 ms 15196 KB Output is correct
9 Correct 3 ms 15196 KB Output is correct
10 Correct 3 ms 15196 KB Output is correct
11 Correct 3 ms 15196 KB Output is correct
12 Incorrect 3 ms 15196 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
13 Halted 0 ms 0 KB -

Subtask #6
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15196 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15196 KB Output is correct
4 Correct 3 ms 15196 KB Output is correct
5 Incorrect 3 ms 15196 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
6 Halted 0 ms 0 KB -

Subtask #7
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15192 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15196 KB Output is correct
4 Correct 3 ms 15196 KB Output is correct
5 Correct 3 ms 15196 KB Output is correct
6 Correct 3 ms 15316 KB Output is correct
7 Correct 3 ms 15196 KB Output is correct
8 Correct 3 ms 15196 KB Output is correct
9 Correct 3 ms 15196 KB Output is correct
10 Correct 3 ms 15196 KB Output is correct
11 Correct 3 ms 15196 KB Output is correct
12 Incorrect 3 ms 15196 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
13 Halted 0 ms 0 KB -

Subtask #8
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15196 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15196 KB Output is correct
4 Correct 3 ms 15196 KB Output is correct
5 Incorrect 3 ms 15196 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
6 Halted 0 ms 0 KB -

Subtask #9
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 15192 KB Output is correct
2 Correct 3 ms 15196 KB Output is correct
3 Correct 3 ms 15196 KB Output is correct
4 Correct 3 ms 15196 KB Output is correct
5 Correct 3 ms 15196 KB Output is correct
6 Correct 3 ms 15316 KB Output is correct
7 Correct 3 ms 15196 KB Output is correct
8 Correct 3 ms 15196 KB Output is correct
9 Correct 3 ms 15196 KB Output is correct
10 Correct 3 ms 15196 KB Output is correct
11 Correct 3 ms 15196 KB Output is correct
12 Incorrect 3 ms 15196 KB 2nd lines differ - on the 1st token, expected: '0', found: '1'
13 Halted 0 ms 0 KB -