oj.uz

Submission #932616

# Submission time Handle Problem Language Result Execution time Memory
932616 2024-02-23T23:46:28 Z Programmer123 Keys (IOI21_keys) C++17
37 / 100
 3000 ms 46560 KB 
#ifndef LOCAL
#pragma GCC optimize("O3")
#pragma GCC target("avx2,sse4.2")
#endif

#include <bits/stdc++.h>

std::vector<int> find_reachable(std::vector<int> r, std::vector<int> u, std::vector<int> v, std::vector<int> c) {
    std::vector<int> ans(r.size(), 0);
    int N = r.size();
    int M = u.size();
    std::vector<int> newName;
    for (int i = 0; i < N; ++i) {
        newName.push_back(i);
    }
    std::shuffle(newName.begin(), newName.end(), std::default_random_engine(std::random_device{}()));
    auto R = r;
    for (int i = 0; i < N; ++i) {
        r[newName[i]] = R[i];
    }
    for (int i = 0; i < M; ++i) {
        u[i] = newName[u[i]];
        v[i] = newName[v[i]];
        c[i] = c[i];
    }
    std::vector<std::pair<int, int>> edges[N];//{dest, type}
    for (int i = 0; i < M; ++i) {
        edges[u[i]].emplace_back(v[i], c[i]);
        edges[v[i]].emplace_back(u[i], c[i]);
    }
    std::unordered_set<int> num[N], canReach[N];
    bool eliminated[N];
    for (int i = 0; i < N; ++i) {
        eliminated[i] = false;
    }
    int actual[N];
    for (int i = 0; i < N; ++i) {
        actual[i] = i;
    }
    std::function<void(int)> Eliminate = [&](int x) {
#ifdef LOCAL
        printf("Eliminating %d\n", x);
#endif
        if (eliminated[actual[x]]) return;
        eliminated[actual[x]] = true;
        for (auto a: canReach[x]) {
            Eliminate(a);
        }
    };
    for (int i = 0; i < N; ++i) {
        bool seen[N];
        for (int j = 0; j < N; ++j) {
            seen[j] = false;
        }
        seen[i] = true;
        std::unordered_set<int> found;
        std::vector<int> next[N];
        std::queue<int> bfs;
        bfs.push(i);
        int TMP_THING = 0;
        while (!bfs.empty()) {
            auto n = bfs.front();
            bfs.pop();
            if (!found.count(r[n])) {
                found.insert(r[n]);
                for (auto a: next[r[n]]) {
                    if (!seen[a]) {
                        if (a < i) {
                            TMP_THING = a;
                            goto elim;
                        }
                        seen[a] = true;
                        bfs.push(a);
                    }
                }
            }
            for (auto [x, t]: edges[n]) {
                if (seen[x]) continue;
                if (found.count(t)) {
                    if (x < i) {
                        TMP_THING = x;
                        goto elim;
                    }
                    seen[x] = true;
                    bfs.push(x);
                } else {
                    next[t].push_back(x);
                }
            }
        }
        for (int j = 0; j < N; ++j) {
            if (seen[j]) {
                num[i].insert(j);
                canReach[j].insert(i);
            }
        }
        for (auto x: canReach[i]) {
            if (!seen[x]) Eliminate(x);
        }
        continue;
        elim:
        TMP_THING = actual[TMP_THING];
        if (eliminated[TMP_THING]) {
            eliminated[i] = true;
            for (auto x: canReach[i]) {
                Eliminate(x);
            }
        } else {
            if (num[TMP_THING].count(i)) {
                actual[i] = TMP_THING;
                for (auto x: canReach[i]) {
                    if (!num[TMP_THING].count(x)) Eliminate(x);
                }
            } else {
                eliminated[i] = true;
                for (auto x: canReach[i]) {
                    Eliminate(x);
                }
            }
        }
    }
    size_t min = INT_MAX;
    for (int i = 0; i < N; ++i) {
        if (eliminated[i]) continue;
        if (actual[i] != i) continue;
        min = std::min(min, num[i].size());
    }
    for (int i = 0; i < N; ++i) {
        if (eliminated[i] || eliminated[actual[i]]) continue;
        ans[i] = num[actual[i]].size() == min;
    }
    auto Ans = ans;
    for (int i = 0; i < N; ++i) {
        Ans[i] = ans[newName[i]];
    }
    return Ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 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 1 ms 600 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 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 1 ms 600 KB Output is correct
10 Correct 1 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 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 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 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 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 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 1 ms 600 KB Output is correct
10 Correct 1 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 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 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 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 11 ms 1628 KB Output is correct
28 Correct 11 ms 1116 KB Output is correct
29 Correct 12 ms 1424 KB Output is correct
30 Correct 3 ms 604 KB Output is correct
31 Correct 4 ms 860 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 2 ms 604 KB Output is correct
34 Correct 3 ms 860 KB Output is correct
35 Correct 2 ms 604 KB Output is correct
36 Correct 7 ms 1116 KB Output is correct
37 Correct 8 ms 1168 KB Output is correct
38 Correct 11 ms 1116 KB Output is correct
39 Correct 9 ms 1316 KB Output is correct
40 Correct 3 ms 860 KB Output is correct
41 Correct 3 ms 604 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 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 1 ms 600 KB Output is correct
10 Execution timed out 3054 ms 46560 KB Time limit exceeded
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 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 1 ms 600 KB Output is correct
10 Correct 1 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 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 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 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 11 ms 1628 KB Output is correct
28 Correct 11 ms 1116 KB Output is correct
29 Correct 12 ms 1424 KB Output is correct
30 Correct 3 ms 604 KB Output is correct
31 Correct 4 ms 860 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 2 ms 604 KB Output is correct
34 Correct 3 ms 860 KB Output is correct
35 Correct 2 ms 604 KB Output is correct
36 Correct 7 ms 1116 KB Output is correct
37 Correct 8 ms 1168 KB Output is correct
38 Correct 11 ms 1116 KB Output is correct
39 Correct 9 ms 1316 KB Output is correct
40 Correct 3 ms 860 KB Output is correct
41 Correct 3 ms 604 KB Output is correct
42 Execution timed out 3054 ms 46560 KB Time limit exceeded
43 Halted 0 ms 0 KB -