oj.uz

Submission #1061458

# Submission time Handle Problem Language Result Execution time Memory
1061458 2024-08-16T09:17:32 Z mc061 Keys (IOI21_keys) C++17
37 / 100
 1681 ms 16468 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 2e3+6;

vector<pair<int, int>> graph[N];

struct DSU {
    int p[N]={};
    int sz[N];
    DSU() {
        iota(p, p+N, 0);
        fill(sz, sz+N, 1);
    }
    int get(int a) {
        return p[a] = (a == p[a] ? a : get(p[a]));
    }
    void merge(int a, int b) {
        int x = get(a), y = get(b);
        if (x == y) return;
        if (sz[x] > sz[y]) swap(x, y);
        p[x] = y;
        sz[y] += sz[x];
    }
};

vector<int> find_reachable(vector<int> r, vector<int> u, vector<int> v, vector<int> c) {
    const int n = r.size();
    const int m = u.size();
    for (int i = 0; i < m; ++i) {
        graph[v[i]].push_back({u[i], c[i]});
        graph[u[i]].push_back({v[i], c[i]});
    }

    vector<int> res(n);


    for (int s = 0; s < n; ++s) {
        DSU d;
        set<pair<int, int>> borders;
        queue<int> q;
        set<int> have;
        set<int> have_c;

        auto add = [&] (int v) {
            have.insert(v);
            if (!have_c.count(r[v])) {
                have_c.insert(r[v]);
                while (borders.size()) {
                    auto it = borders.lower_bound({r[v], -1});
                    if (it == borders.end()) break;
                    if (it->first == r[v]) {
                        d.merge(it->second, s);
                        if (!have.count(it->second)) {
                            have.insert(it->second);
                            q.push(it->second);
                        }
                        borders.erase(it);
                        continue;
                    }
                    break;
                }
            }
            for (auto [u, w] : graph[v]) {
                if (have.count(u)) continue;
                if (have_c.count(w)) {
                    q.push(u);
                    have.insert(u);
                    d.merge(s, u);
                    continue;
                }

                borders.insert({w, u});
            }
        };

        q.push(s);
        while (!q.empty()) {
            int v = q.front();
            q.pop();
            add(v);
        } 
        res[s] = d.sz[d.get(s)];
    }
    int mn = *min_element(res.begin(), res.end());
    vector<int> ret(n, 0);
    for (int i = 0; i < n; ++i) {
        if (res[i] == mn) ret[i] = 1;
    }
    return ret;
}

Subtask #1
9.0 / 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 1 ms 348 KB Output is correct
4 Correct 3 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 508 KB Output is correct
9 Correct 5 ms 508 KB Output is correct

Subtask #2
11.0 / 11.0

# 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 1 ms 348 KB Output is correct
4 Correct 3 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 508 KB Output is correct
9 Correct 5 ms 508 KB Output is correct
10 Correct 5 ms 348 KB Output is correct
11 Correct 4 ms 348 KB Output is correct
12 Correct 5 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 6 ms 428 KB Output is correct
16 Correct 1 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 1 ms 348 KB Output is correct
21 Correct 6 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 9 ms 520 KB Output is correct
24 Correct 9 ms 520 KB Output is correct
25 Correct 12 ms 348 KB Output is correct
26 Correct 12 ms 348 KB Output is correct

Subtask #3
17.0 / 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 1 ms 348 KB Output is correct
4 Correct 3 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 508 KB Output is correct
9 Correct 5 ms 508 KB Output is correct
10 Correct 5 ms 348 KB Output is correct
11 Correct 4 ms 348 KB Output is correct
12 Correct 5 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 6 ms 428 KB Output is correct
16 Correct 1 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 1 ms 348 KB Output is correct
21 Correct 6 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 9 ms 520 KB Output is correct
24 Correct 9 ms 520 KB Output is correct
25 Correct 12 ms 348 KB Output is correct
26 Correct 12 ms 348 KB Output is correct
27 Correct 452 ms 808 KB Output is correct
28 Correct 447 ms 600 KB Output is correct
29 Correct 452 ms 604 KB Output is correct
30 Correct 247 ms 600 KB Output is correct
31 Correct 3 ms 600 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 2 ms 348 KB Output is correct
34 Correct 182 ms 604 KB Output is correct
35 Correct 277 ms 604 KB Output is correct
36 Correct 1220 ms 600 KB Output is correct
37 Correct 1124 ms 760 KB Output is correct
38 Correct 1681 ms 780 KB Output is correct
39 Correct 1570 ms 780 KB Output is correct
40 Correct 42 ms 604 KB Output is correct
41 Correct 309 ms 640 KB Output is correct

Subtask #4
0 / 30.0

# 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 1 ms 348 KB Output is correct
4 Correct 3 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 508 KB Output is correct
9 Correct 5 ms 508 KB Output is correct
10 Runtime error 70 ms 16468 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# 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 1 ms 348 KB Output is correct
4 Correct 3 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 508 KB Output is correct
9 Correct 5 ms 508 KB Output is correct
10 Correct 5 ms 348 KB Output is correct
11 Correct 4 ms 348 KB Output is correct
12 Correct 5 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 6 ms 428 KB Output is correct
16 Correct 1 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 1 ms 348 KB Output is correct
21 Correct 6 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 9 ms 520 KB Output is correct
24 Correct 9 ms 520 KB Output is correct
25 Correct 12 ms 348 KB Output is correct
26 Correct 12 ms 348 KB Output is correct
27 Correct 452 ms 808 KB Output is correct
28 Correct 447 ms 600 KB Output is correct
29 Correct 452 ms 604 KB Output is correct
30 Correct 247 ms 600 KB Output is correct
31 Correct 3 ms 600 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 2 ms 348 KB Output is correct
34 Correct 182 ms 604 KB Output is correct
35 Correct 277 ms 604 KB Output is correct
36 Correct 1220 ms 600 KB Output is correct
37 Correct 1124 ms 760 KB Output is correct
38 Correct 1681 ms 780 KB Output is correct
39 Correct 1570 ms 780 KB Output is correct
40 Correct 42 ms 604 KB Output is correct
41 Correct 309 ms 640 KB Output is correct
42 Runtime error 70 ms 16468 KB Execution killed with signal 11
43 Halted 0 ms 0 KB -