oj.uz

Submission #689542

# Submission time Handle Problem Language Result Execution time Memory
689542 2023-01-28T17:30:28 Z danikoynov Klasika (COCI20_klasika) C++14
33 / 110
 1605 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 = 400100;

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[2 * maxn * 50];
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 209 ms 495132 KB Output is correct
2 Correct 213 ms 495176 KB Output is correct
3 Correct 209 ms 495180 KB Output is correct
4 Correct 209 ms 495136 KB Output is correct
5 Correct 208 ms 495180 KB Output is correct
6 Correct 207 ms 495132 KB Output is correct
7 Correct 208 ms 495128 KB Output is correct
8 Correct 210 ms 495108 KB Output is correct
9 Correct 208 ms 495108 KB Output is correct
10 Correct 205 ms 495168 KB Output is correct
11 Correct 218 ms 495156 KB Output is correct
12 Correct 210 ms 495108 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 209 ms 495132 KB Output is correct
2 Correct 213 ms 495176 KB Output is correct
3 Correct 209 ms 495180 KB Output is correct
4 Correct 209 ms 495136 KB Output is correct
5 Correct 208 ms 495180 KB Output is correct
6 Correct 207 ms 495132 KB Output is correct
7 Correct 208 ms 495128 KB Output is correct
8 Correct 210 ms 495108 KB Output is correct
9 Correct 208 ms 495108 KB Output is correct
10 Correct 205 ms 495168 KB Output is correct
11 Correct 218 ms 495156 KB Output is correct
12 Correct 210 ms 495108 KB Output is correct
13 Correct 212 ms 495120 KB Output is correct
14 Correct 245 ms 495212 KB Output is correct
15 Correct 216 ms 495272 KB Output is correct
16 Correct 218 ms 495376 KB Output is correct
17 Correct 212 ms 495180 KB Output is correct
18 Correct 215 ms 495076 KB Output is correct
19 Correct 218 ms 495272 KB Output is correct
20 Correct 213 ms 495172 KB Output is correct
21 Correct 214 ms 495140 KB Output is correct
22 Correct 212 ms 495120 KB Output is correct
23 Correct 212 ms 495220 KB Output is correct
24 Correct 215 ms 495136 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 624 ms 501100 KB Output is correct
2 Correct 907 ms 505084 KB Output is correct
3 Runtime error 1605 ms 524288 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 209 ms 495132 KB Output is correct
2 Correct 213 ms 495176 KB Output is correct
3 Correct 209 ms 495180 KB Output is correct
4 Correct 209 ms 495136 KB Output is correct
5 Correct 208 ms 495180 KB Output is correct
6 Correct 207 ms 495132 KB Output is correct
7 Correct 208 ms 495128 KB Output is correct
8 Correct 210 ms 495108 KB Output is correct
9 Correct 208 ms 495108 KB Output is correct
10 Correct 205 ms 495168 KB Output is correct
11 Correct 218 ms 495156 KB Output is correct
12 Correct 210 ms 495108 KB Output is correct
13 Correct 212 ms 495120 KB Output is correct
14 Correct 245 ms 495212 KB Output is correct
15 Correct 216 ms 495272 KB Output is correct
16 Correct 218 ms 495376 KB Output is correct
17 Correct 212 ms 495180 KB Output is correct
18 Correct 215 ms 495076 KB Output is correct
19 Correct 218 ms 495272 KB Output is correct
20 Correct 213 ms 495172 KB Output is correct
21 Correct 214 ms 495140 KB Output is correct
22 Correct 212 ms 495120 KB Output is correct
23 Correct 212 ms 495220 KB Output is correct
24 Correct 215 ms 495136 KB Output is correct
25 Correct 624 ms 501100 KB Output is correct
26 Correct 907 ms 505084 KB Output is correct
27 Runtime error 1605 ms 524288 KB Execution killed with signal 11
28 Halted 0 ms 0 KB -