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Submission #494026

# Submission time Handle Problem Language Result Execution time Memory
494026 2021-12-13T19:39:47 Z Victor Klasika (COCI20_klasika) C++17
33 / 110
 2240 ms 524292 KB 
// #pragma GCC target ("avx,avx2,fma")
// #pragma GCC optimize ("Ofast,inline") // O1 - O2 - O3 - Os - Ofast
// #pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>

using namespace std;

#define rep(i, a, b) for (int i = (a); i < (b); ++i)
#define per(i, a, b) for (int i = (b - 1); i >= (a); --i)
#define trav(a, x) for (auto &a : x)

#define all(x) x.begin(), x.end()
#define sz(x) x.size()
#define pb push_back
#define debug(x) cout << #x << " = " << x << endl

#define umap unordered_map
#define uset unordered_set

typedef pair<int, int> ii;
typedef pair<int, ii> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;

typedef long long ll;
typedef pair<ll, ll> pll;
typedef vector<ll> vll;
typedef vector<pll> vpll;

const int INF = 1'000'000'007;
const int MAXN = 200001;

int xor_root[MAXN + 5], euler_id[MAXN + 5], sub_size[MAXN + 5], n = 1, cnt = 0;

struct Node {
    Node *zero = 0, *one = 0;
    set<int> nodes;
    int node_val = 0;

    void add(int val, int pos, int u) {
        nodes.insert(euler_id[u]);
        if (pos == -1) return;

        if (val & (1 << pos)) {
            if (one == 0) {
                one = new Node;
                one->node_val = node_val | (1 << pos);
                one->nodes.insert(INF);
            }
            one->add(val, pos - 1, u);

        } else {
            if (zero == 0) {
                zero = new Node;
                zero->node_val = node_val;
                zero->nodes.insert(INF);
            }
            zero->add(val, pos - 1, u);
        }
    }

    int query(int val, int pos, int u) {
        if (pos == -1) return node_val;

        bool has_zero = 0;
        if (zero && *zero->nodes.lower_bound(euler_id[u]) < euler_id[u] + sub_size[u]) has_zero = 1;
        bool has_one = 0;
        if (one && *one->nodes.lower_bound(euler_id[u]) < euler_id[u] + sub_size[u]) has_one = 1;

        //cout<<"val = "<<val<<" pos = "<<pos<<" u = "<<u<<" has_zero = "<<has_zero<<" has_one = "<<has_one<<" node_val = "<<node_val<<endl;

        if (!has_zero) return one->query(val, pos - 1, u);
        if (!has_one) return zero->query(val, pos - 1, u);

        if (val & (1 << pos))
            return zero->query(val, pos - 1, u);
        else
            return one->query(val, pos - 1, u);
    }
};

vii graph[MAXN + 5];

void dfs(int u, int cur_xor) {
    sub_size[u] = 1;
    euler_id[u] = cnt++;
    xor_root[u] = cur_xor;

    trav(edge, graph[u]) {
        int v, w;
        tie(v, w) = edge;
        dfs(v, cur_xor ^ w);
        sub_size[u] += sub_size[v];
    }
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin.exceptions(cin.failbit);

    vector<iii> queries;
    int q;

    cin >> q;
    rep(i, 0, q) {
        string type;
        int a, b;
        cin >> type >> a >> b;
        queries.pb({type == "Add", {a, b}});
        if (type == "Add") graph[a - 1].emplace_back(n++, b);
    }

    dfs(0, 0);

    const int len = 30;
    Node trie;
    trie.add(0, len, 0);

    cnt = 1;
    rep(i, 0, q) {
        int type;
        type = queries[i].first;
        if (type) {
            int u, w;
            tie(u, w) = queries[i].second;
            trie.add(xor_root[cnt], len, cnt);
            ++cnt;

        } else {
            int u, v;
            tie(u, v) = queries[i].second;
            cout << (xor_root[u - 1] ^ trie.query(xor_root[u - 1], len, v - 1)) << endl;
        }
    }
    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5196 KB Output is correct
2 Correct 3 ms 5324 KB Output is correct
3 Correct 3 ms 5580 KB Output is correct
4 Correct 3 ms 5708 KB Output is correct
5 Correct 4 ms 5196 KB Output is correct
6 Correct 3 ms 5324 KB Output is correct
7 Correct 4 ms 5452 KB Output is correct
8 Correct 3 ms 5708 KB Output is correct
9 Correct 5 ms 5196 KB Output is correct
10 Correct 3 ms 5452 KB Output is correct
11 Correct 3 ms 5580 KB Output is correct
12 Correct 4 ms 5736 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5196 KB Output is correct
2 Correct 3 ms 5324 KB Output is correct
3 Correct 3 ms 5580 KB Output is correct
4 Correct 3 ms 5708 KB Output is correct
5 Correct 4 ms 5196 KB Output is correct
6 Correct 3 ms 5324 KB Output is correct
7 Correct 4 ms 5452 KB Output is correct
8 Correct 3 ms 5708 KB Output is correct
9 Correct 5 ms 5196 KB Output is correct
10 Correct 3 ms 5452 KB Output is correct
11 Correct 3 ms 5580 KB Output is correct
12 Correct 4 ms 5736 KB Output is correct
13 Correct 9 ms 6860 KB Output is correct
14 Correct 10 ms 8524 KB Output is correct
15 Correct 12 ms 10248 KB Output is correct
16 Correct 12 ms 11724 KB Output is correct
17 Correct 8 ms 6732 KB Output is correct
18 Correct 10 ms 8396 KB Output is correct
19 Correct 12 ms 10060 KB Output is correct
20 Correct 13 ms 11596 KB Output is correct
21 Correct 8 ms 6732 KB Output is correct
22 Correct 11 ms 8524 KB Output is correct
23 Correct 11 ms 10044 KB Output is correct
24 Correct 16 ms 11584 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 954 ms 152032 KB Output is correct
2 Correct 1396 ms 288932 KB Output is correct
3 Correct 1890 ms 416804 KB Output is correct
4 Runtime error 2240 ms 524292 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5196 KB Output is correct
2 Correct 3 ms 5324 KB Output is correct
3 Correct 3 ms 5580 KB Output is correct
4 Correct 3 ms 5708 KB Output is correct
5 Correct 4 ms 5196 KB Output is correct
6 Correct 3 ms 5324 KB Output is correct
7 Correct 4 ms 5452 KB Output is correct
8 Correct 3 ms 5708 KB Output is correct
9 Correct 5 ms 5196 KB Output is correct
10 Correct 3 ms 5452 KB Output is correct
11 Correct 3 ms 5580 KB Output is correct
12 Correct 4 ms 5736 KB Output is correct
13 Correct 9 ms 6860 KB Output is correct
14 Correct 10 ms 8524 KB Output is correct
15 Correct 12 ms 10248 KB Output is correct
16 Correct 12 ms 11724 KB Output is correct
17 Correct 8 ms 6732 KB Output is correct
18 Correct 10 ms 8396 KB Output is correct
19 Correct 12 ms 10060 KB Output is correct
20 Correct 13 ms 11596 KB Output is correct
21 Correct 8 ms 6732 KB Output is correct
22 Correct 11 ms 8524 KB Output is correct
23 Correct 11 ms 10044 KB Output is correct
24 Correct 16 ms 11584 KB Output is correct
25 Correct 954 ms 152032 KB Output is correct
26 Correct 1396 ms 288932 KB Output is correct
27 Correct 1890 ms 416804 KB Output is correct
28 Runtime error 2240 ms 524292 KB Execution killed with signal 9
29 Halted 0 ms 0 KB -