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Submission #769568

# Submission time Handle Problem Language Result Execution time Memory
769568 2023-06-29T19:26:12 Z vjudge1 Klasika (COCI20_klasika) C++17
66 / 110
 908 ms 524288 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define pb push_back
#define ss second
#define ff first
#define all(x) (x).begin(), (x).end()

const int nax = 2e5 + 4;
int q, n = 1, k = 1;
int d[nax], eul[nax], eulend[nax];
int cureul = -1;
vector<pii> adj[nax];
struct node
{
    char layer = 0;
    node *zer, *one;
    node(): layer(0), zer(nullptr), one(nullptr){}
    node (char d, node *ll, node *rr)
    {
        zer = ll, one = rr;
        layer= d;
    }
    node(node *cp): layer(cp->layer), zer(cp->zer), one(cp->one) {}
};
node *update(node *Node, int val, char d)
{
    if(d == 0)
        return new node();
    if(val & (1 << (d - 1)))
    {
        if(Node->one == nullptr)
            Node->one = new node(d - 1, nullptr, nullptr);
        return new node(d, Node->zer, update(Node->one, val, d - 1));

    }
    else
    {
        if(Node->zer == nullptr)
            Node->zer = new node(d - 1, nullptr, nullptr);
        return new node(d, update(Node->zer, val, d - 1), Node->one);
    }
}
node *roots[4 * nax];

int query(node *Node, int val)
{

    if(Node->layer == 0)
        return 0;
   // cout << Node->layer << ' ' << val << '\n';
    if(val & (1 << (Node->layer - 1)))
    {
        if(Node->zer != nullptr)
            return (1 << (Node->layer - 1)) + query(Node->zer, val);
        else
            return query(Node->one, val);
    }
    else
    {
        if(Node->one != nullptr)
            return (1 << (Node->layer - 1)) + query(Node->one, val);
        else
            return query(Node->zer, val);
    }
}
void pupd(int i, int val)
{
    i += k;
    if(roots[i] == nullptr)
        roots[i] = new node(30, nullptr, nullptr);
    roots[i] = update(roots[i], val, 30);
   // cout << i << endl;
    i /= 2;

    while(i)
    {
        //cout << i << endl;
        if(roots[i] == nullptr)
        roots[i] = new node(30, nullptr, nullptr);
        roots[i] = update(roots[i], val, 30);
        i /= 2;
    }
}
int squery(int p, int l, int r, int i, int j, int val)
{
    if(i > j)
        return 0;
    if(l >= i && r <= j)
    {
        if(roots[p] != nullptr)
            return query(roots[p], val);
        else
            return 0;
    }
    int m = (l + r)/2;
    return max(squery(2 * p, l, m, i, min(j, m), val),
               squery(2 * p + 1, m + 1, r, max(i, m + 1), j, val));
}
void dfs(int x, int p)
{
    eul[x] = ++cureul;
    for(auto e: adj[x])
    {
        d[e.ff] = d[x]^e.ss;
        dfs(e.ff, x);
    }
    eulend[x] = cureul;
}
void solve()
{
    cin >> q;
    vector<pair<int,pii>>  queries;
    bool flag= true;
    for(int i = 1; i <= q; i++)
    {
        string s; cin >> s;
        int x, y;
        cin >> x >> y;
        if(s== "Add")
        {
            adj[x].pb({++n, y});
            x = n;
        }
        else
        {
            flag &= (y == 1);
        }
        queries.pb({(s == "Query"), {x, y}});
    }

    dfs(1, 0);

    while(k < n)
        k = (k << 1);
    //bbuild(1, 0, k - 1);
    pupd(0, 0);
   // cout << squery(1, 0, k - 1, eul[1], eulend[1], d[1]) << '\n';
    for(auto e: queries)
    {
        if(flag)
        {
            if(e.ff == 0)
            {
                //cout << e.ss.ff << ' ' << eul[e.ss.ff] << endl;
                update(roots[1], d[e.ss.ff], 30);
            }
            else
            {
                int a = e.ss.ff;
                int b = e.ss.ss;
               // cout << a << ' ' << b << endl;
                cout << query(roots[1], d[a]) << '\n';
            }
        }
        else
        {
            if(e.ff == 0)
            {
                //cout << e.ss.ff << ' ' << eul[e.ss.ff] << endl;
                pupd(eul[e.ss.ff], d[e.ss.ff]);
            }
            else
            {
                int a = e.ss.ff;
                int b = e.ss.ss;
               // cout << a << ' ' << b << endl;
                cout << squery(1, 0, k - 1, eul[b], eulend[b], d[a]) << '\n';
            }
        }
    }
}
int32_t main()
{
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    int tt = 1;
    while(tt--)
        solve();
}

Compilation message

klasika.cpp: In function 'void solve()':
klasika.cpp:159:21: warning: unused variable 'b' [-Wunused-variable]
  159 |                 int b = e.ss.ss;
      |                     ^

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5716 KB Output is correct
2 Correct 4 ms 6100 KB Output is correct
3 Correct 4 ms 6740 KB Output is correct
4 Correct 5 ms 7508 KB Output is correct
5 Correct 3 ms 5460 KB Output is correct
6 Correct 3 ms 6100 KB Output is correct
7 Correct 4 ms 6596 KB Output is correct
8 Correct 5 ms 7636 KB Output is correct
9 Correct 3 ms 5588 KB Output is correct
10 Correct 4 ms 6308 KB Output is correct
11 Correct 4 ms 6868 KB Output is correct
12 Correct 5 ms 7636 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5716 KB Output is correct
2 Correct 4 ms 6100 KB Output is correct
3 Correct 4 ms 6740 KB Output is correct
4 Correct 5 ms 7508 KB Output is correct
5 Correct 3 ms 5460 KB Output is correct
6 Correct 3 ms 6100 KB Output is correct
7 Correct 4 ms 6596 KB Output is correct
8 Correct 5 ms 7636 KB Output is correct
9 Correct 3 ms 5588 KB Output is correct
10 Correct 4 ms 6308 KB Output is correct
11 Correct 4 ms 6868 KB Output is correct
12 Correct 5 ms 7636 KB Output is correct
13 Correct 12 ms 12628 KB Output is correct
14 Correct 21 ms 21292 KB Output is correct
15 Correct 30 ms 31512 KB Output is correct
16 Correct 36 ms 39380 KB Output is correct
17 Correct 11 ms 12208 KB Output is correct
18 Correct 20 ms 20820 KB Output is correct
19 Correct 31 ms 31052 KB Output is correct
20 Correct 36 ms 39024 KB Output is correct
21 Correct 12 ms 12328 KB Output is correct
22 Correct 20 ms 20924 KB Output is correct
23 Correct 37 ms 30996 KB Output is correct
24 Correct 38 ms 38960 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 187 ms 70376 KB Output is correct
2 Correct 253 ms 129140 KB Output is correct
3 Correct 300 ms 185972 KB Output is correct
4 Correct 351 ms 243320 KB Output is correct
5 Correct 185 ms 68948 KB Output is correct
6 Correct 247 ms 126292 KB Output is correct
7 Correct 300 ms 181624 KB Output is correct
8 Correct 356 ms 237308 KB Output is correct
9 Correct 181 ms 68700 KB Output is correct
10 Correct 253 ms 127036 KB Output is correct
11 Correct 294 ms 183244 KB Output is correct
12 Correct 350 ms 238920 KB Output is correct

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5716 KB Output is correct
2 Correct 4 ms 6100 KB Output is correct
3 Correct 4 ms 6740 KB Output is correct
4 Correct 5 ms 7508 KB Output is correct
5 Correct 3 ms 5460 KB Output is correct
6 Correct 3 ms 6100 KB Output is correct
7 Correct 4 ms 6596 KB Output is correct
8 Correct 5 ms 7636 KB Output is correct
9 Correct 3 ms 5588 KB Output is correct
10 Correct 4 ms 6308 KB Output is correct
11 Correct 4 ms 6868 KB Output is correct
12 Correct 5 ms 7636 KB Output is correct
13 Correct 12 ms 12628 KB Output is correct
14 Correct 21 ms 21292 KB Output is correct
15 Correct 30 ms 31512 KB Output is correct
16 Correct 36 ms 39380 KB Output is correct
17 Correct 11 ms 12208 KB Output is correct
18 Correct 20 ms 20820 KB Output is correct
19 Correct 31 ms 31052 KB Output is correct
20 Correct 36 ms 39024 KB Output is correct
21 Correct 12 ms 12328 KB Output is correct
22 Correct 20 ms 20924 KB Output is correct
23 Correct 37 ms 30996 KB Output is correct
24 Correct 38 ms 38960 KB Output is correct
25 Correct 187 ms 70376 KB Output is correct
26 Correct 253 ms 129140 KB Output is correct
27 Correct 300 ms 185972 KB Output is correct
28 Correct 351 ms 243320 KB Output is correct
29 Correct 185 ms 68948 KB Output is correct
30 Correct 247 ms 126292 KB Output is correct
31 Correct 300 ms 181624 KB Output is correct
32 Correct 356 ms 237308 KB Output is correct
33 Correct 181 ms 68700 KB Output is correct
34 Correct 253 ms 127036 KB Output is correct
35 Correct 294 ms 183244 KB Output is correct
36 Correct 350 ms 238920 KB Output is correct
37 Runtime error 908 ms 524288 KB Execution killed with signal 9
38 Halted 0 ms 0 KB -