oj.uz

Submission #983346

# Submission time Handle Problem Language Result Execution time Memory
983346 2024-05-15T10:42:15 Z raphaelp Island Hopping (JOI24_island) C++17
100 / 100
 9 ms 672 KB 
#include <bits/stdc++.h>
#include "island.h"
using namespace std;
/*vector<vector<int>> dist;
int query(int x, int k)
{
    return dist[x - 1][k] + 1;
}
void answer(int a, int b)
{
    cout << a << ' ' << b << endl;
}*/
class UnionFind
{
private:
    vector<int> p;

public:
    UnionFind(int x)
    {
        p.assign(x, 0);
        for (int i = 0; i < x; i++)
            p[i] = i;
    }
    int find(int x) { return (x == p[x]) ? x : p[x] = find(p[x]); }
    bool samecomp(int a, int b) { return (find(a) == find(b)) ? 1 : 0; }
    void merge(int a, int b)
    {
        int x = find(a), y = find(b);
        if (x == y)
            return;
        p[x] = y;
    }
};
void solve(int N, int L)
{
    UnionFind UF(N);
    for (int i = 0; i < N; i++)
    {
        for (int k = 1; k < N; k++)
        {
            int x = query(i + 1, k) - 1;
            if (x > i)
                break;
            if (UF.samecomp(i, x))
                break;
            UF.merge(i, x);
            answer(x + 1, i + 1);
        }
    }
}
/*int main()
{
    int N, L;
    cin >> N >> L;
    vector<vector<int>> AR(N);
    for (int i = 0; i < N - 1; i++)
    {
        int a, b;
        cin >> a >> b;
        a--, b--;
        AR[a].push_back(b);
        AR[b].push_back(a);
    }
    dist.assign(N, vector<int>(N, 0));
    for (int i = 0; i < N; i++)
    {
        vector<int> occ(N);
        priority_queue<pair<int, int>> PQ;
        int buff = 0;
        PQ.push({0, -i});
        while (!PQ.empty())
        {
            int x = -PQ.top().second, t = -PQ.top().first;
            PQ.pop();
            if (occ[x])
                continue;
            occ[x] = 1;
            dist[i][buff++] = x;
            for (int j = 0; j < AR[x].size(); j++)
            {
                PQ.push({-(t + 1), -AR[x][j]});
            }
        }
    }
    solve(N, L);
}*/

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 3 ms 600 KB Output is correct
6 Correct 4 ms 344 KB Output is correct
7 Correct 4 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 4 ms 344 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 3 ms 344 KB Output is correct
3 Correct 3 ms 344 KB Output is correct
4 Correct 3 ms 344 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 3 ms 344 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 4 ms 424 KB Output is correct
3 Correct 3 ms 344 KB Output is correct
4 Correct 3 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 5 ms 344 KB Output is correct
7 Correct 3 ms 344 KB Output is correct
8 Correct 3 ms 432 KB Output is correct
9 Correct 4 ms 344 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 3 ms 600 KB Output is correct
5 Correct 4 ms 344 KB Output is correct
6 Correct 4 ms 544 KB Output is correct
7 Correct 4 ms 344 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 6 ms 600 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 3 ms 600 KB Output is correct
6 Correct 4 ms 344 KB Output is correct
7 Correct 4 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 4 ms 424 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 4 ms 344 KB Output is correct
15 Correct 5 ms 344 KB Output is correct
16 Correct 3 ms 344 KB Output is correct
17 Correct 3 ms 432 KB Output is correct
18 Correct 4 ms 344 KB Output is correct
19 Correct 5 ms 344 KB Output is correct
20 Correct 4 ms 344 KB Output is correct
21 Correct 4 ms 344 KB Output is correct
22 Correct 3 ms 344 KB Output is correct
23 Correct 4 ms 600 KB Output is correct
24 Correct 3 ms 344 KB Output is correct
25 Correct 4 ms 344 KB Output is correct
26 Correct 5 ms 344 KB Output is correct
27 Correct 4 ms 340 KB Output is correct
28 Correct 3 ms 352 KB Output is correct
29 Correct 9 ms 340 KB Output is correct
30 Correct 3 ms 344 KB Output is correct
31 Correct 4 ms 344 KB Output is correct
32 Correct 4 ms 344 KB Output is correct
33 Correct 4 ms 596 KB Output is correct
34 Correct 5 ms 344 KB Output is correct
35 Correct 4 ms 344 KB Output is correct
36 Correct 4 ms 344 KB Output is correct
37 Correct 5 ms 344 KB Output is correct
38 Correct 4 ms 344 KB Output is correct
39 Correct 3 ms 344 KB Output is correct
40 Correct 4 ms 596 KB Output is correct
41 Correct 4 ms 344 KB Output is correct
42 Correct 4 ms 344 KB Output is correct
43 Correct 4 ms 344 KB Output is correct
44 Correct 4 ms 344 KB Output is correct

Subtask #7
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 4 ms 344 KB Output is correct
7 Correct 3 ms 600 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 4 ms 544 KB Output is correct
10 Correct 4 ms 344 KB Output is correct
11 Correct 3 ms 344 KB Output is correct
12 Correct 6 ms 600 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 5 ms 436 KB Output is correct
15 Correct 3 ms 424 KB Output is correct
16 Correct 5 ms 344 KB Output is correct
17 Correct 3 ms 424 KB Output is correct
18 Correct 4 ms 344 KB Output is correct
19 Correct 5 ms 344 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 3 ms 344 KB Output is correct
22 Correct 4 ms 344 KB Output is correct
23 Correct 5 ms 344 KB Output is correct
24 Correct 4 ms 344 KB Output is correct
25 Correct 4 ms 600 KB Output is correct
26 Correct 4 ms 600 KB Output is correct
27 Correct 3 ms 344 KB Output is correct
28 Correct 4 ms 344 KB Output is correct
29 Correct 3 ms 344 KB Output is correct
30 Correct 3 ms 344 KB Output is correct
31 Correct 3 ms 600 KB Output is correct
32 Correct 5 ms 344 KB Output is correct
33 Correct 4 ms 344 KB Output is correct
34 Correct 4 ms 344 KB Output is correct
35 Correct 4 ms 672 KB Output is correct
36 Correct 4 ms 344 KB Output is correct
37 Correct 4 ms 600 KB Output is correct
38 Correct 4 ms 600 KB Output is correct

Subtask #8
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 3 ms 344 KB Output is correct
3 Correct 3 ms 344 KB Output is correct
4 Correct 3 ms 344 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 3 ms 344 KB Output is correct
7 Correct 3 ms 340 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 4 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 3 ms 600 KB Output is correct
13 Correct 5 ms 344 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 3 ms 600 KB Output is correct
16 Correct 4 ms 600 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 5 ms 344 KB Output is correct
19 Correct 4 ms 600 KB Output is correct
20 Correct 4 ms 596 KB Output is correct
21 Correct 5 ms 344 KB Output is correct
22 Correct 5 ms 344 KB Output is correct
23 Correct 5 ms 428 KB Output is correct
24 Correct 3 ms 344 KB Output is correct
25 Correct 3 ms 344 KB Output is correct
26 Correct 3 ms 600 KB Output is correct
27 Correct 3 ms 344 KB Output is correct
28 Correct 4 ms 600 KB Output is correct
29 Correct 4 ms 344 KB Output is correct
30 Correct 3 ms 344 KB Output is correct
31 Correct 3 ms 600 KB Output is correct
32 Correct 3 ms 600 KB Output is correct
33 Correct 3 ms 344 KB Output is correct
34 Correct 3 ms 344 KB Output is correct
35 Correct 4 ms 344 KB Output is correct
36 Correct 3 ms 344 KB Output is correct
37 Correct 3 ms 344 KB Output is correct
38 Correct 3 ms 344 KB Output is correct
39 Correct 4 ms 344 KB Output is correct
40 Correct 4 ms 344 KB Output is correct