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Submission #1084765

# Submission time Handle Problem Language Result Execution time Memory
1084765 2024-09-07T00:14:30 Z tfgs Klasika (COCI20_klasika) C++17
33 / 110
 349 ms 134096 KB 
#include <bits/stdc++.h>
using namespace std;

#ifdef LOCAL
#include "algo/debug.h"
#endif

#define f first
#define s second
template<class T> using V = vector<T>; 
using vi = V<int>;

#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x) 
#define pb push_back
#define lb lower_bound
#define ub upper_bound
template<class T> int lwb(V<T>& a, const T& b) { return lb(all(a),b)-begin(a); }
template<class T> int upb(V<T>& a, const T& b) { return ub(all(a),b)-begin(a); }
template<class T> bool ckmin(T& a, const T& b) { return a > b ? a=b, true : false; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a=b, true : false; }

constexpr int p2(int x) { return (int)1 << x; }

const int LOGX = 30, MAX_N = 2e5, MAX_NODES = 2*MAX_N-1;

struct Node {
    int sons[2];
    set<int> tins;
    Node() {
        sons[0] = sons[1] = -1;
    }
} trie[MAX_NODES];
int trie_siz = 1;

void add_str(int str, int time) {
    int u = 0;
    for (int i = LOGX-1; i >= 0; i--) {
        trie[u].tins.insert(time);
        bool nxt = str&p2(i);
        int& c = trie[u].sons[nxt];
        if (c != -1) {
            u = c;
        } else {
            u = c = trie_siz++;
        }
    }
    trie[u].tins.insert(time);
}

int best_match(int pattern, int l, int r) {
    int match = 0;
    int u = 0;
    for (int i = LOGX-1; i >= 0; i--) {
        bool nxt = !(pattern & p2(i));
        int c = trie[u].sons[nxt];
        if (c != -1 && trie[c].tins.lb(l) != trie[c].tins.end() && *trie[c].tins.lb(l) < r) {
            u = c;
            match += p2(i)*nxt;
        } else {
            u = trie[u].sons[1-nxt];
            match += p2(i)*(1-nxt);
        }
    }
    return match;
}

int timer;
vi tin, tout, x;
V<V<array<int, 2>>> sons;
void dfs(int u) {
    tin[u] = timer++;
    for (auto [v, w] : sons[u]) {
        x[v] = x[u]^w;
        dfs(v);
    }
    tout[u] = timer;
}

void solve() {
    int q; cin >> q;
    int n = 1;

    V<array<int, 3>> queries;
    for (int i = 0; i < q; i++) {
        string typ; cin >> typ;
        if (typ == "Add") {
            int u, w; cin >> u >> w; u--;
            queries.pb({0, n, -1});
            sons.resize(n+1);
            sons[u].pb({n++, w});

        } else {
            int a, b; cin >> a >> b; a--; b--;
            queries.pb({1, a, b});
        }
    }

    tin.resize(n);
    tout.resize(n);
    x.resize(n);
    dfs(0);

    // add_str(0b10100, 0);
    // add_str(0b11111, 1);
    // ps(best_match(0, 0, 1));
    // return;
    add_str(0, 0);
    for (int i = 0; i < q; i++) {
        if (queries[i][0] == 0) {
            auto [_, u, __] = queries[i];
            add_str(x[u], tin[u]);
        } else {
            auto [_, a, b] = queries[i];
            cout << (x[a]^best_match(x[a], tin[b], tout[b])) << '\n';
        }
    }
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    solve();
    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 22360 KB Output is correct
2 Correct 10 ms 22364 KB Output is correct
3 Correct 9 ms 22532 KB Output is correct
4 Correct 10 ms 22620 KB Output is correct
5 Correct 10 ms 22364 KB Output is correct
6 Correct 10 ms 22364 KB Output is correct
7 Correct 9 ms 22360 KB Output is correct
8 Correct 10 ms 22872 KB Output is correct
9 Correct 10 ms 22364 KB Output is correct
10 Correct 10 ms 22364 KB Output is correct
11 Correct 9 ms 22388 KB Output is correct
12 Correct 10 ms 22588 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 22360 KB Output is correct
2 Correct 10 ms 22364 KB Output is correct
3 Correct 9 ms 22532 KB Output is correct
4 Correct 10 ms 22620 KB Output is correct
5 Correct 10 ms 22364 KB Output is correct
6 Correct 10 ms 22364 KB Output is correct
7 Correct 9 ms 22360 KB Output is correct
8 Correct 10 ms 22872 KB Output is correct
9 Correct 10 ms 22364 KB Output is correct
10 Correct 10 ms 22364 KB Output is correct
11 Correct 9 ms 22388 KB Output is correct
12 Correct 10 ms 22588 KB Output is correct
13 Correct 12 ms 22876 KB Output is correct
14 Correct 14 ms 23828 KB Output is correct
15 Correct 15 ms 24156 KB Output is correct
16 Correct 15 ms 24924 KB Output is correct
17 Correct 13 ms 22900 KB Output is correct
18 Correct 13 ms 23412 KB Output is correct
19 Correct 14 ms 24176 KB Output is correct
20 Correct 14 ms 24664 KB Output is correct
21 Correct 11 ms 22876 KB Output is correct
22 Correct 13 ms 23640 KB Output is correct
23 Correct 15 ms 24148 KB Output is correct
24 Correct 15 ms 24836 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Runtime error 349 ms 134096 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 22360 KB Output is correct
2 Correct 10 ms 22364 KB Output is correct
3 Correct 9 ms 22532 KB Output is correct
4 Correct 10 ms 22620 KB Output is correct
5 Correct 10 ms 22364 KB Output is correct
6 Correct 10 ms 22364 KB Output is correct
7 Correct 9 ms 22360 KB Output is correct
8 Correct 10 ms 22872 KB Output is correct
9 Correct 10 ms 22364 KB Output is correct
10 Correct 10 ms 22364 KB Output is correct
11 Correct 9 ms 22388 KB Output is correct
12 Correct 10 ms 22588 KB Output is correct
13 Correct 12 ms 22876 KB Output is correct
14 Correct 14 ms 23828 KB Output is correct
15 Correct 15 ms 24156 KB Output is correct
16 Correct 15 ms 24924 KB Output is correct
17 Correct 13 ms 22900 KB Output is correct
18 Correct 13 ms 23412 KB Output is correct
19 Correct 14 ms 24176 KB Output is correct
20 Correct 14 ms 24664 KB Output is correct
21 Correct 11 ms 22876 KB Output is correct
22 Correct 13 ms 23640 KB Output is correct
23 Correct 15 ms 24148 KB Output is correct
24 Correct 15 ms 24836 KB Output is correct
25 Runtime error 349 ms 134096 KB Execution killed with signal 11
26 Halted 0 ms 0 KB -