oj.uz

Submission #689533

# Submission time Handle Problem Language Result Execution time Memory
689533 2023-01-28T17:26:21 Z danikoynov Klasika (COCI20_klasika) C++14
33 / 110
 1041 ms 524288 KB 
/**
 ____ ____ ____ ____ ____ ____
||l |||e |||i |||n |||a |||d ||
||__|||__|||__|||__|||__|||__||
|/__\|/__\|/__\|/__\|/__\|/__\|

**/

#include<bits/stdc++.h>
#define endl '\n'

using namespace std;
typedef long long ll;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}

struct trie
{
    int depth, child[2];

    trie(int _depth = 30)
    {
        depth = _depth;
        child[0] = child[1] = -1;
    }
};

const int maxn = 200100;

struct query
{
    int x, y;
    string type;
}ask[maxn];

int n = 1, q;
vector < pair < int, int > > g[maxn];

int xor_depth[maxn], f[maxn], timer, tin[maxn], tout[maxn];
void dfs(int v)
{
    f[++ timer] = v;
    tin[v] = timer;

    for (pair < int, int > nb : g[v])
    {
        int u = nb.first;
        xor_depth[u] = (xor_depth[v] ^ nb.second);
        dfs(u);
    }

    tout[v] = timer;
}

trie tree[4 * maxn * 30];
int last_used, root_index[maxn * 4];

void build_tree(int root, int left, int right)
{
    root_index[root] = ++ last_used;

    if (left == right)
        return;

    int mid = (left + right) / 2;
    build_tree(root * 2, left, mid);
    build_tree(root * 2 + 1, mid + 1, right);
}

void add(int root, int &num)
{
    if (tree[root].depth < 0)
        return;

    int bit = ((1 << tree[root].depth) & num), type = (bit > 0);
    if (tree[root].child[type] == -1)
    {
        tree[root].child[type] = ++ last_used;
        tree[last_used] = trie(tree[root].depth - 1);
    }

    add(tree[root].child[type], num);
}

int query_xor(int root, int x)
{
    if (tree[root].depth < 0)
        return 0;

    int bit = (1 << tree[root].depth), type = ((bit & x) > 0);
    if (tree[root].child[(type + 1) % 2] != -1)
        return query_xor(tree[root].child[(type + 1) % 2], x) + bit;
    return query_xor(tree[root].child[type], x);
}

void update_node(int root, int val)
{
    add(root_index[root], val);
}


void update(int root, int left, int right, int pos, int val)
{
    update_node(root, val);

    if (left == right)
        return;

    int mid = (left + right) / 2;
    if (pos <= mid)
        update(root * 2, left, mid, pos, val);
    else
        update(root * 2 + 1, mid + 1, right, pos, val);
}

int query_node(int root, int val)
{
    int idx = root_index[root];
    if (tree[idx].child[0] == -1 &&
        tree[idx].child[1] == -1)
            return 0;
    return query_xor(idx, val);
}

int query_range(int root, int left, int right, int qleft, int qright, int val)
{

    if (left > qright || right < qleft)
        return 0;
    if (left >= qleft && right <= qright)
        return query_node(root, val);

    int mid = (left + right) / 2;
    return max(query_range(root * 2, left, mid, qleft, qright, val),
               query_range(root * 2 + 1, mid + 1, right, qleft, qright, val));
}

void add_node(int ver)
{
    update(1, 1, n, tin[ver], xor_depth[ver]);
}

void solve()
{
    cin >> q;
    for (int i = 1; i <= q; i ++)
    {
        cin >> ask[i].type >> ask[i].x >> ask[i].y;
        if (ask[i].type == "Add")
            g[ask[i].x].push_back({++ n, ask[i].y});

    }

    dfs(1);
    build_tree(1, 1, n);
    add_node(1);

    int ver_cnt = 1;
    for (int i = 1; i <= q; i ++)
    {
        if (ask[i].type == "Add")
        {
            add_node(++ ver_cnt);
        }
        else
        {

            int a = ask[i].x, b = ask[i].y;
            int ans = query_range(1, 1, n, tin[b], tout[b], xor_depth[a]);
            cout << ans << endl;
        }
    }
}

int main()
{
    ///speed();
    solve();
    return 0;
}
/**

*/

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 294728 KB Output is correct
2 Correct 128 ms 294848 KB Output is correct
3 Correct 125 ms 294700 KB Output is correct
4 Correct 140 ms 294772 KB Output is correct
5 Correct 129 ms 294668 KB Output is correct
6 Correct 136 ms 294720 KB Output is correct
7 Correct 124 ms 294732 KB Output is correct
8 Correct 134 ms 294732 KB Output is correct
9 Correct 134 ms 294676 KB Output is correct
10 Correct 130 ms 294892 KB Output is correct
11 Correct 130 ms 294692 KB Output is correct
12 Correct 132 ms 294680 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 294728 KB Output is correct
2 Correct 128 ms 294848 KB Output is correct
3 Correct 125 ms 294700 KB Output is correct
4 Correct 140 ms 294772 KB Output is correct
5 Correct 129 ms 294668 KB Output is correct
6 Correct 136 ms 294720 KB Output is correct
7 Correct 124 ms 294732 KB Output is correct
8 Correct 134 ms 294732 KB Output is correct
9 Correct 134 ms 294676 KB Output is correct
10 Correct 130 ms 294892 KB Output is correct
11 Correct 130 ms 294692 KB Output is correct
12 Correct 132 ms 294680 KB Output is correct
13 Correct 134 ms 294752 KB Output is correct
14 Correct 134 ms 294864 KB Output is correct
15 Correct 133 ms 294868 KB Output is correct
16 Correct 146 ms 294908 KB Output is correct
17 Correct 128 ms 294748 KB Output is correct
18 Correct 127 ms 294708 KB Output is correct
19 Correct 136 ms 294776 KB Output is correct
20 Correct 139 ms 294780 KB Output is correct
21 Correct 126 ms 294800 KB Output is correct
22 Correct 129 ms 294860 KB Output is correct
23 Correct 142 ms 294732 KB Output is correct
24 Correct 142 ms 294784 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 571 ms 300768 KB Output is correct
2 Runtime error 1041 ms 524288 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 294728 KB Output is correct
2 Correct 128 ms 294848 KB Output is correct
3 Correct 125 ms 294700 KB Output is correct
4 Correct 140 ms 294772 KB Output is correct
5 Correct 129 ms 294668 KB Output is correct
6 Correct 136 ms 294720 KB Output is correct
7 Correct 124 ms 294732 KB Output is correct
8 Correct 134 ms 294732 KB Output is correct
9 Correct 134 ms 294676 KB Output is correct
10 Correct 130 ms 294892 KB Output is correct
11 Correct 130 ms 294692 KB Output is correct
12 Correct 132 ms 294680 KB Output is correct
13 Correct 134 ms 294752 KB Output is correct
14 Correct 134 ms 294864 KB Output is correct
15 Correct 133 ms 294868 KB Output is correct
16 Correct 146 ms 294908 KB Output is correct
17 Correct 128 ms 294748 KB Output is correct
18 Correct 127 ms 294708 KB Output is correct
19 Correct 136 ms 294776 KB Output is correct
20 Correct 139 ms 294780 KB Output is correct
21 Correct 126 ms 294800 KB Output is correct
22 Correct 129 ms 294860 KB Output is correct
23 Correct 142 ms 294732 KB Output is correct
24 Correct 142 ms 294784 KB Output is correct
25 Correct 571 ms 300768 KB Output is correct
26 Runtime error 1041 ms 524288 KB Execution killed with signal 11
27 Halted 0 ms 0 KB -