oj.uz

Submission #875165

# Submission time Handle Problem Language Result Execution time Memory
875165 2023-11-18T18:02:15 Z Dr_rabi3 Klasika (COCI20_klasika) C++14
33 / 110
 1854 ms 524288 KB 
/***   Coding for Fun ^^ وَمَا تَوْفِيقِي إِلَّا بِاللَّهِ ۚ عَلَيْهِ تَوَكَّلْتُ وَإِلَيْهِ أُنِيبُ    ***/
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>
#include <ext/numeric>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ull unsigned ll
#define ld long double
#define ed '\n'
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define fixed(x) fixed<<setprecision(x)
#define memo(dp,x) memset(dp,x,sizeof(dp))
#define sumOf(a) (ll)((-1 + sqrt(8LL * a + 1)) / 2)
#define debug cerr
#define Good_Bay return

using namespace std;
using namespace __gnu_pbds;
std::mt19937_64 rng(std::chrono::system_clock::now().time_since_epoch().count());

template < typename T > using ordered_set = tree< T, null_type, less_equal< T >, rb_tree_tag, tree_order_statistics_node_update >;

template < typename T > istream& operator >> (istream& in, vector < T >& v) {
    for (auto& x : v) in >> x;
    return in;
}

template < typename T > ostream& operator << (ostream& out, const vector < T >& v) {
    for (const T& x : v) out << x << ' ';
    return out;
}


void Accept() { // for VS code
    ios_base::sync_with_stdio(false);
    cout.tie(nullptr);
    cin.tie(nullptr);
    // #ifndef ONLINE_JUDGE
    //     freopen("input.txt", "r", stdin);
    //     freopen("output.txt", "w", stdout);
    // #else
        // freopen("darwin.in", "r", stdin);
        // freopen("visitfj.out", "w", stdout);
    // #endif
}

constexpr int mod = 1e9 + 7, oo = 0x3f3f3f3f, N = 1e6 + 5;
const double pi = acos(-1), EPS = 1e-7;
constexpr ll OO = 0x3f3f3f3f3f3f3f3f;

constexpr int dy[] = { 0 , 1 , -1 , 0  , 1 , -1 , 1  , -1 };
constexpr int dx[] = { 1 , 0 ,  0 , -1 , 1 , -1 , -1 ,  1 };

struct query {
    ll t, a, b;
    query(ll t, ll a, ll b) : t(t), a(a), b(b) {}
};

vector<ll>adj[N];
vector<ll>in(N), out(N);
vector<query>Q;
ll n = 1, id = 1;

void dfs(int u) {
    in[u] = id++;
    for (auto& v : adj[u]) dfs(v);
    out[u] = id++;
}

struct binary_trie {
    vector<array<ll, 2>> trie;
    vector<array<set<ll>, 2>> numsIn;
    int LOG;
    binary_trie(int _LOG) : LOG(_LOG) {
        trie = { array<ll, 2>{-1, -1} };
        numsIn = { array<set<ll>, 2>{} };
    }

    void insert(ll x, ll u) {
        int v = 0;
        for (int bit = LOG - 1; bit >= 0; --bit) {
            int to = ((1LL << bit) & x ? 1 : 0);
            if (~trie[v][to]) {
                numsIn[v][to].insert(in[u]);
                v = trie[v][to];
            }
            else {
                numsIn[v][to].insert(in[u]);
                v = (trie[v][to] = (int)trie.size());
                trie.push_back(array<ll, 2>{-1, -1});
                numsIn.push_back(array<set<ll>, 2>{});
            }
        }
    }

    ll query_max(ll x, ll u) {
        ll v = 0, sum = 0;
        for (int bit = LOG - 1; bit >= 0; bit--) {
            ll to = ((1LL << bit) & x ? 0 : 1);
            auto itIn = numsIn[v][to].lower_bound(in[u]);
            if (~trie[v][to] and itIn != numsIn[v][to].end() and *itIn <= out[u]) {
                v = trie[v][to], sum += to * (1LL << bit);
            }
            else {
                v = trie[v][1 - to], sum += (1 - to) * (1LL << bit);
            }
        }
        return x ^ sum;
    }
};


void doWork(int T) {
    int q;
    cin >> q;
    binary_trie tr(64);
    for (int i = 0;i < q;i++) {
        string s;
        ll a, b;
        cin >> s >> a >> b;
        if (s == "Add") {
            adj[a].push_back(++n);
            Q.push_back({ 1,a,b });
        }
        else {
            Q.push_back({ 2,a,b });
        }
    }
    dfs(1);
    vector<ll>preXor(n + 1);
    preXor[1] = 0;
    n = 1;
    tr.insert(0, 1);
    for (auto i : Q) {
        if (i.t == 2) cout << tr.query_max(preXor[i.a], i.b) << ed;
        else {
            preXor[++n] = preXor[i.a] ^ i.b;
            tr.insert(preXor[n], n);
        }
    }
}

int main() {
    // debug << "M3L4 El-Code MYTFHM4";
    Accept();
    int _ = 1;
    // cin >> _;
    for (int __ = 1;__ <= _;__++) {
        // cout << "Case " << __ << ": ";
        doWork(__);
        if (__ < _)cout << '\n';
        // cout << '\n';
    }
    Good_Bay 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 39768 KB Output is correct
2 Correct 10 ms 40028 KB Output is correct
3 Correct 11 ms 40284 KB Output is correct
4 Correct 11 ms 40344 KB Output is correct
5 Correct 11 ms 39768 KB Output is correct
6 Correct 11 ms 40028 KB Output is correct
7 Correct 10 ms 40148 KB Output is correct
8 Correct 11 ms 40340 KB Output is correct
9 Correct 10 ms 39772 KB Output is correct
10 Correct 12 ms 40308 KB Output is correct
11 Correct 11 ms 40340 KB Output is correct
12 Correct 11 ms 40344 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 39768 KB Output is correct
2 Correct 10 ms 40028 KB Output is correct
3 Correct 11 ms 40284 KB Output is correct
4 Correct 11 ms 40344 KB Output is correct
5 Correct 11 ms 39768 KB Output is correct
6 Correct 11 ms 40028 KB Output is correct
7 Correct 10 ms 40148 KB Output is correct
8 Correct 11 ms 40340 KB Output is correct
9 Correct 10 ms 39772 KB Output is correct
10 Correct 12 ms 40308 KB Output is correct
11 Correct 11 ms 40340 KB Output is correct
12 Correct 11 ms 40344 KB Output is correct
13 Correct 15 ms 42516 KB Output is correct
14 Correct 18 ms 45376 KB Output is correct
15 Correct 21 ms 46348 KB Output is correct
16 Correct 25 ms 53416 KB Output is correct
17 Correct 15 ms 42364 KB Output is correct
18 Correct 19 ms 46864 KB Output is correct
19 Correct 20 ms 46352 KB Output is correct
20 Correct 24 ms 48024 KB Output is correct
21 Correct 15 ms 42516 KB Output is correct
22 Correct 18 ms 46864 KB Output is correct
23 Correct 21 ms 46092 KB Output is correct
24 Correct 23 ms 47824 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1106 ms 263132 KB Output is correct
2 Correct 1854 ms 493236 KB Output is correct
3 Runtime error 1633 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 39768 KB Output is correct
2 Correct 10 ms 40028 KB Output is correct
3 Correct 11 ms 40284 KB Output is correct
4 Correct 11 ms 40344 KB Output is correct
5 Correct 11 ms 39768 KB Output is correct
6 Correct 11 ms 40028 KB Output is correct
7 Correct 10 ms 40148 KB Output is correct
8 Correct 11 ms 40340 KB Output is correct
9 Correct 10 ms 39772 KB Output is correct
10 Correct 12 ms 40308 KB Output is correct
11 Correct 11 ms 40340 KB Output is correct
12 Correct 11 ms 40344 KB Output is correct
13 Correct 15 ms 42516 KB Output is correct
14 Correct 18 ms 45376 KB Output is correct
15 Correct 21 ms 46348 KB Output is correct
16 Correct 25 ms 53416 KB Output is correct
17 Correct 15 ms 42364 KB Output is correct
18 Correct 19 ms 46864 KB Output is correct
19 Correct 20 ms 46352 KB Output is correct
20 Correct 24 ms 48024 KB Output is correct
21 Correct 15 ms 42516 KB Output is correct
22 Correct 18 ms 46864 KB Output is correct
23 Correct 21 ms 46092 KB Output is correct
24 Correct 23 ms 47824 KB Output is correct
25 Correct 1106 ms 263132 KB Output is correct
26 Correct 1854 ms 493236 KB Output is correct
27 Runtime error 1633 ms 524288 KB Execution killed with signal 9
28 Halted 0 ms 0 KB -