oj.uz

Submission #673796

# Submission time Handle Problem Language Result Execution time Memory
673796 2022-12-22T04:27:28 Z BackNoob Klasika (COCI20_klasika) C++14
110 / 110
 2228 ms 448892 KB 
#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define endl '\n'
#define MASK(i) (1LL << (i))
#define ull unsigned long long
#define ld long double
#define pb push_back
#define all(x) (x).begin() , (x).end()
#define BIT(x , i) ((x >> (i)) & 1)
#define TASK "task"
#define sz(s) (int) (s).size()
 
using namespace std;
const int mxN = 5e5 + 227;
const int inf = 1e9 + 277;
const int mod = 1e9 + 7;
const ll infll = 1e18 + 7;
const int base = 307;
const int LOG = 20;
 
template <typename T1, typename T2> bool minimize(T1 &a, T2 b) {
    if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b) {
    if (a < b) {a = b; return true;} return false;
}

struct Node{
    Node* child[2];
    set<int> s;

    Node(){
        child[0] = child[1] = nullptr;
    }
};

 
int q;
int sta[mxN];
int fin[mxN];
int dist[mxN];
vector<pair<int, int>> adj[mxN];
pair<int, int> qr[mxN];
string cmd[mxN];
int timer = 0;
Node *root = new Node();

void add_trie(int x, int idx)
{
    Node* p = root;
    for(int i = 29; i >= 0; i--) {
        int nxt = BIT(x, i);
        if(p -> child[nxt] == nullptr) p -> child[nxt] = new Node();
        p = p -> child[nxt];
        (p -> s).insert(idx);
    }
}

void dfs_pre(int u, int p)
{
    sta[u] = ++timer;
    for(auto it : adj[u]) {
        int v = it.fi;
        int c = it.se;
        if(v == p) continue;
        dist[v] = (dist[u] ^ c);
        dfs_pre(v, u);
    }
    fin[u] = timer;
}

int findmaxxor(int x, int l, int r)
{
    Node* p = root;
    int res = 0;
    for(int i = 29; i >= 0; i--) {
        int nxt = !BIT(x, i);
        if(p -> child[nxt] == nullptr) {
            p = p -> child[!nxt];
        }
        else {
            auto it = (p -> child[nxt] -> s).lower_bound(l);
            if(it != (p -> child[nxt] -> s).end() && *it <= r) {
                res |= (1 << i);
                p = p -> child[nxt];
            }
            else {
                p = p -> child[!nxt];
            }
        }
    }
    return res;
}
 
void solve()
{
    cin >> q;
    int node = 1;
    for(int i = 1; i <= q; i++) {
        cin >> cmd[i] >> qr[i].fi >> qr[i].se;  
        if(cmd[i] == "Add") {
            ++node;
            adj[node].pb({qr[i].fi, qr[i].se});
            adj[qr[i].fi].pb({node, qr[i].se});
        }
    }

    dfs_pre(1, -1);
    node = 1;
    add_trie(dist[node], sta[node]);
    for(int i = 1; i <= q; i++) {
        if(cmd[i] == "Add") {
            ++node;
            add_trie(dist[node], sta[node]);
        }
        else {
            cout << findmaxxor(dist[qr[i].fi], sta[qr[i].se], fin[qr[i].se]) << endl;
        }
    }
}
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    // freopen(TASK".inp" , "r" , stdin);
    // freopen(TASK".out" , "w" , stdout);
 
    int tc = 1;
    //cin >> tc;
    while(tc--) {
        solve();
    }
    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 27860 KB Output is correct
2 Correct 13 ms 27988 KB Output is correct
3 Correct 16 ms 28104 KB Output is correct
4 Correct 14 ms 28244 KB Output is correct
5 Correct 13 ms 27800 KB Output is correct
6 Correct 13 ms 28008 KB Output is correct
7 Correct 13 ms 28116 KB Output is correct
8 Correct 15 ms 28220 KB Output is correct
9 Correct 15 ms 27876 KB Output is correct
10 Correct 13 ms 27988 KB Output is correct
11 Correct 14 ms 28116 KB Output is correct
12 Correct 16 ms 28172 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 27860 KB Output is correct
2 Correct 13 ms 27988 KB Output is correct
3 Correct 16 ms 28104 KB Output is correct
4 Correct 14 ms 28244 KB Output is correct
5 Correct 13 ms 27800 KB Output is correct
6 Correct 13 ms 28008 KB Output is correct
7 Correct 13 ms 28116 KB Output is correct
8 Correct 15 ms 28220 KB Output is correct
9 Correct 15 ms 27876 KB Output is correct
10 Correct 13 ms 27988 KB Output is correct
11 Correct 14 ms 28116 KB Output is correct
12 Correct 16 ms 28172 KB Output is correct
13 Correct 17 ms 29100 KB Output is correct
14 Correct 19 ms 30452 KB Output is correct
15 Correct 18 ms 31632 KB Output is correct
16 Correct 19 ms 32724 KB Output is correct
17 Correct 17 ms 29012 KB Output is correct
18 Correct 16 ms 30264 KB Output is correct
19 Correct 18 ms 31468 KB Output is correct
20 Correct 18 ms 32624 KB Output is correct
21 Correct 18 ms 29132 KB Output is correct
22 Correct 19 ms 30336 KB Output is correct
23 Correct 18 ms 31504 KB Output is correct
24 Correct 21 ms 32620 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 516 ms 143580 KB Output is correct
2 Correct 907 ms 247752 KB Output is correct
3 Correct 1350 ms 347660 KB Output is correct
4 Correct 1733 ms 448212 KB Output is correct
5 Correct 575 ms 141588 KB Output is correct
6 Correct 972 ms 243788 KB Output is correct
7 Correct 1435 ms 341940 KB Output is correct
8 Correct 1821 ms 439892 KB Output is correct
9 Correct 565 ms 141068 KB Output is correct
10 Correct 957 ms 244744 KB Output is correct
11 Correct 1332 ms 344108 KB Output is correct
12 Correct 1734 ms 442056 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 27860 KB Output is correct
2 Correct 13 ms 27988 KB Output is correct
3 Correct 16 ms 28104 KB Output is correct
4 Correct 14 ms 28244 KB Output is correct
5 Correct 13 ms 27800 KB Output is correct
6 Correct 13 ms 28008 KB Output is correct
7 Correct 13 ms 28116 KB Output is correct
8 Correct 15 ms 28220 KB Output is correct
9 Correct 15 ms 27876 KB Output is correct
10 Correct 13 ms 27988 KB Output is correct
11 Correct 14 ms 28116 KB Output is correct
12 Correct 16 ms 28172 KB Output is correct
13 Correct 17 ms 29100 KB Output is correct
14 Correct 19 ms 30452 KB Output is correct
15 Correct 18 ms 31632 KB Output is correct
16 Correct 19 ms 32724 KB Output is correct
17 Correct 17 ms 29012 KB Output is correct
18 Correct 16 ms 30264 KB Output is correct
19 Correct 18 ms 31468 KB Output is correct
20 Correct 18 ms 32624 KB Output is correct
21 Correct 18 ms 29132 KB Output is correct
22 Correct 19 ms 30336 KB Output is correct
23 Correct 18 ms 31504 KB Output is correct
24 Correct 21 ms 32620 KB Output is correct
25 Correct 516 ms 143580 KB Output is correct
26 Correct 907 ms 247752 KB Output is correct
27 Correct 1350 ms 347660 KB Output is correct
28 Correct 1733 ms 448212 KB Output is correct
29 Correct 575 ms 141588 KB Output is correct
30 Correct 972 ms 243788 KB Output is correct
31 Correct 1435 ms 341940 KB Output is correct
32 Correct 1821 ms 439892 KB Output is correct
33 Correct 565 ms 141068 KB Output is correct
34 Correct 957 ms 244744 KB Output is correct
35 Correct 1332 ms 344108 KB Output is correct
36 Correct 1734 ms 442056 KB Output is correct
37 Correct 1029 ms 144500 KB Output is correct
38 Correct 1448 ms 247716 KB Output is correct
39 Correct 1730 ms 350432 KB Output is correct
40 Correct 1963 ms 448892 KB Output is correct
41 Correct 1107 ms 142140 KB Output is correct
42 Correct 1507 ms 243732 KB Output is correct
43 Correct 1838 ms 342032 KB Output is correct
44 Correct 2228 ms 439120 KB Output is correct
45 Correct 1149 ms 141484 KB Output is correct
46 Correct 1587 ms 244716 KB Output is correct
47 Correct 1858 ms 342948 KB Output is correct
48 Correct 1988 ms 441588 KB Output is correct