oj.uz

답안 #519686

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
519686 2022-01-27T04:14:55 Z KoD Klasika (COCI20_klasika) C++17
33 / 110
 901 ms 524292 KB 
#include <bits/stdc++.h>

using std::vector;
using std::array;
using std::pair;
using std::tuple;

constexpr int LOG = 30;

struct Trie {
    struct Node {
        array<int, 2> child;
        Node() { child.fill(-1); }
    };
    static inline vector<Node> node;
    static int add_node() {
        node.emplace_back();
        return node.size() - 1;
    }
    int root;
    Trie() : root(-1) {}
    void insert(const int x) {
        if (root == -1) {
            root = add_node();
        }
        int u = root;
        for (int d = LOG - 1; d >= 0; --d) {
            const int k = x >> d & 1;
            if (node[u].child[k] == -1) {
                node[u].child[k] = add_node();
            }
            u = node[u].child[k];
        }
    }
    int max(const int x) const {
        if (root == -1) {
            return 0;
        }
        int u = root, ret = 0;
        for (int d = LOG - 1; d >= 0; --d) {
            const int k = x >> d & 1;
            if (node[u].child[k ^ 1] == -1) {
                u = node[u].child[k];
            } else {
                u = node[u].child[k ^ 1];
                ret |= 1 << d;
            }
        }
        return ret;
    }
};

struct SegTree {
    int size;
    vector<Trie> data;
    SegTree(const int n) : size(n), data(2 * n, Trie()) {}
    void add(int k, const int x) {
        k += size;
        while (k > 0) {
            data[k].insert(x);
            k >>= 1;
        }
    }
    int max(int l, int r, const int x) const {
        int ret = 0;
        l += size, r += size;
        while (l < r) {
            if (l & 1) ret = std::max(ret, data[l++].max(x));
            if (r & 1) ret = std::max(ret, data[--r].max(x));
            l >>= 1, r >>= 1;
        }
        return ret;
    }
};

template <class F> struct RecLambda : private F {
    explicit RecLambda(F&& f) : F(std::forward<F>(f)) {}
    template <class... Args> decltype(auto) operator()(Args&&... args) const {
        return F::operator()(*this, std::forward<Args>(args)...);
    }
};

int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);
    int Q;
    std::cin >> Q;
    int N = 1;
    vector<int> value(N);
    vector<vector<int>> graph(N);
    vector<pair<int, int>> query(Q);
    for (auto& [a, b] : query) {
        std::string s;
        std::cin >> s;
        if (s == "Add") {
            int x, y;
            std::cin >> x >> y;
            const int u = N++;
            value.push_back(y);
            graph.emplace_back();
            graph[x - 1].push_back(u);
            a = u, b = -1;
        } else {
            std::cin >> a >> b;
            a -= 1, b -= 1;
        }
    }
    vector<int> in(N), out(N);
    int stamp = 0;
    RecLambda([&](auto&& dfs, const int u, const int p) -> void {
        in[u] = stamp++;
        value[u] ^= value[p];
        for (const int v : graph[u]) {
            dfs(v, u);
        }
        out[u] = stamp;
    })(0, 0);
    SegTree seg(N);
    seg.add(in[0], value[0]);
    for (const auto& [a, b] : query) {
        if (b == -1) {
            seg.add(in[a], value[a]);
        } else {
            std::cout << seg.max(in[b], out[b], value[a]) << '\n';
        }
    }
    return 0;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 1 ms 700 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 564 KB Output is correct
7 Correct 1 ms 676 KB Output is correct
8 Correct 1 ms 932 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 696 KB Output is correct
11 Correct 1 ms 696 KB Output is correct
12 Correct 1 ms 976 KB Output is correct

Subtask #2
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 1 ms 700 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 564 KB Output is correct
7 Correct 1 ms 676 KB Output is correct
8 Correct 1 ms 932 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 696 KB Output is correct
11 Correct 1 ms 696 KB Output is correct
12 Correct 1 ms 976 KB Output is correct
13 Correct 4 ms 1476 KB Output is correct
14 Correct 5 ms 2608 KB Output is correct
15 Correct 7 ms 4708 KB Output is correct
16 Correct 7 ms 4740 KB Output is correct
17 Correct 3 ms 1472 KB Output is correct
18 Correct 4 ms 2624 KB Output is correct
19 Correct 7 ms 4576 KB Output is correct
20 Correct 8 ms 4680 KB Output is correct
21 Correct 4 ms 1476 KB Output is correct
22 Correct 5 ms 2624 KB Output is correct
23 Correct 7 ms 4604 KB Output is correct
24 Correct 8 ms 4680 KB Output is correct

Subtask #3
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 589 ms 142492 KB Output is correct
2 Correct 835 ms 279348 KB Output is correct
3 Runtime error 901 ms 524292 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 436 KB Output is correct
3 Correct 1 ms 700 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 564 KB Output is correct
7 Correct 1 ms 676 KB Output is correct
8 Correct 1 ms 932 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 696 KB Output is correct
11 Correct 1 ms 696 KB Output is correct
12 Correct 1 ms 976 KB Output is correct
13 Correct 4 ms 1476 KB Output is correct
14 Correct 5 ms 2608 KB Output is correct
15 Correct 7 ms 4708 KB Output is correct
16 Correct 7 ms 4740 KB Output is correct
17 Correct 3 ms 1472 KB Output is correct
18 Correct 4 ms 2624 KB Output is correct
19 Correct 7 ms 4576 KB Output is correct
20 Correct 8 ms 4680 KB Output is correct
21 Correct 4 ms 1476 KB Output is correct
22 Correct 5 ms 2624 KB Output is correct
23 Correct 7 ms 4604 KB Output is correct
24 Correct 8 ms 4680 KB Output is correct
25 Correct 589 ms 142492 KB Output is correct
26 Correct 835 ms 279348 KB Output is correct
27 Runtime error 901 ms 524292 KB Execution killed with signal 9
28 Halted 0 ms 0 KB -