oj.uz

Submission #500972

# Submission time Handle Problem Language Result Execution time Memory
500972 2022-01-01T19:16:04 Z someone Klasika (COCI20_klasika) C++14
110 / 110
 666 ms 245768 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

const int N = 2e5 + 42, INF = 1e18 + 42, MOD = 1e9 + 7;

struct Query {
    int a, t;
};

struct Node {
    int id[2], mini;
};

struct Trie {
    int sz = 0;
    vector<Query> q;
    vector<Node> node;

    Trie() {
        node.push_back({{-1, -1}, INF});
    }

    void insert(int val, int t) {
        int a = 0;
        q.push_back({val, t});
        for(int i = 29; i > -1; i--) {
            int b = min((val & (1 << i)), 1ll);
            if(node[a].id[b] == -1) {
                node[a].id[b] = ++sz;
                node.push_back({{-1, -1}, INF});
            }
            a = node[a].id[b];
            node[a].mini = min(node[a].mini, t);
        }
    }

    int getMax(int val, int t) {
        int ans = 0, a = 0;
        for(int i = 29; i > -1; i--) {
            ans <<= 1;
            int b = min((val & (1 << i)), 1ll);
            if(node[a].id[1 - b] != -1 && node[node[a].id[1 - b]].mini < t) {
                ans++;
                a = node[a].id[1 - b];
            } else
                a = node[a].id[b];
        }
        return ans;
    }
};

vector<Query> q[N];
vector<int> adj[N];
int n, XOR[N], temps[N], ans[N];

Trie DFS(int i) {
    Trie act;
    act.insert(XOR[i], temps[i]);
    for(int j : adj[i]) {
        Trie child = DFS(j);
        if(child.q.size() > act.q.size())
            swap(child, act);
        for(Query req : child.q)
            act.insert(req.a, req.t);
    }
    for(Query req : q[i])
        ans[req.t] = act.getMax(XOR[req.a], req.t);
    return act;
}

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

    cin >> n;

    int nb = 1;
    for(int i = 0; i < n; i++)
        ans[i] = -1;
    for(int i = 0; i < n; i++) {
        string str;
        int a, b;
        cin >> str >> a >> b;
        if(str[0] == 'A') {
            a--;
            temps[nb] = i;
            adj[a].push_back(nb);
            XOR[nb] = XOR[a] ^ b;
            nb++;
        } else {
            q[b-1].push_back({a-1, i});
        }
    }

    DFS(0);
    for(int i = 0; i < n; i++)
        if(ans[i] != -1)
            cout << ans[i] << '\n';
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9844 KB Output is correct
2 Correct 5 ms 9852 KB Output is correct
3 Correct 5 ms 9976 KB Output is correct
4 Correct 5 ms 9972 KB Output is correct
5 Correct 5 ms 9812 KB Output is correct
6 Correct 6 ms 9844 KB Output is correct
7 Correct 7 ms 9824 KB Output is correct
8 Correct 6 ms 9844 KB Output is correct
9 Correct 5 ms 9852 KB Output is correct
10 Correct 5 ms 9932 KB Output is correct
11 Correct 7 ms 9932 KB Output is correct
12 Correct 5 ms 9880 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9844 KB Output is correct
2 Correct 5 ms 9852 KB Output is correct
3 Correct 5 ms 9976 KB Output is correct
4 Correct 5 ms 9972 KB Output is correct
5 Correct 5 ms 9812 KB Output is correct
6 Correct 6 ms 9844 KB Output is correct
7 Correct 7 ms 9824 KB Output is correct
8 Correct 6 ms 9844 KB Output is correct
9 Correct 5 ms 9852 KB Output is correct
10 Correct 5 ms 9932 KB Output is correct
11 Correct 7 ms 9932 KB Output is correct
12 Correct 5 ms 9880 KB Output is correct
13 Correct 6 ms 10684 KB Output is correct
14 Correct 7 ms 11592 KB Output is correct
15 Correct 9 ms 12100 KB Output is correct
16 Correct 8 ms 13256 KB Output is correct
17 Correct 7 ms 10408 KB Output is correct
18 Correct 8 ms 10832 KB Output is correct
19 Correct 9 ms 11108 KB Output is correct
20 Correct 11 ms 11128 KB Output is correct
21 Correct 9 ms 10428 KB Output is correct
22 Correct 8 ms 11032 KB Output is correct
23 Correct 10 ms 11464 KB Output is correct
24 Correct 12 ms 11648 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 193 ms 89164 KB Output is correct
2 Correct 280 ms 135792 KB Output is correct
3 Correct 337 ms 192020 KB Output is correct
4 Correct 388 ms 245680 KB Output is correct
5 Correct 250 ms 44136 KB Output is correct
6 Correct 394 ms 96040 KB Output is correct
7 Correct 514 ms 88500 KB Output is correct
8 Correct 624 ms 143264 KB Output is correct
9 Correct 224 ms 68096 KB Output is correct
10 Correct 308 ms 114676 KB Output is correct
11 Correct 354 ms 139412 KB Output is correct
12 Correct 433 ms 210656 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9844 KB Output is correct
2 Correct 5 ms 9852 KB Output is correct
3 Correct 5 ms 9976 KB Output is correct
4 Correct 5 ms 9972 KB Output is correct
5 Correct 5 ms 9812 KB Output is correct
6 Correct 6 ms 9844 KB Output is correct
7 Correct 7 ms 9824 KB Output is correct
8 Correct 6 ms 9844 KB Output is correct
9 Correct 5 ms 9852 KB Output is correct
10 Correct 5 ms 9932 KB Output is correct
11 Correct 7 ms 9932 KB Output is correct
12 Correct 5 ms 9880 KB Output is correct
13 Correct 6 ms 10684 KB Output is correct
14 Correct 7 ms 11592 KB Output is correct
15 Correct 9 ms 12100 KB Output is correct
16 Correct 8 ms 13256 KB Output is correct
17 Correct 7 ms 10408 KB Output is correct
18 Correct 8 ms 10832 KB Output is correct
19 Correct 9 ms 11108 KB Output is correct
20 Correct 11 ms 11128 KB Output is correct
21 Correct 9 ms 10428 KB Output is correct
22 Correct 8 ms 11032 KB Output is correct
23 Correct 10 ms 11464 KB Output is correct
24 Correct 12 ms 11648 KB Output is correct
25 Correct 193 ms 89164 KB Output is correct
26 Correct 280 ms 135792 KB Output is correct
27 Correct 337 ms 192020 KB Output is correct
28 Correct 388 ms 245680 KB Output is correct
29 Correct 250 ms 44136 KB Output is correct
30 Correct 394 ms 96040 KB Output is correct
31 Correct 514 ms 88500 KB Output is correct
32 Correct 624 ms 143264 KB Output is correct
33 Correct 224 ms 68096 KB Output is correct
34 Correct 308 ms 114676 KB Output is correct
35 Correct 354 ms 139412 KB Output is correct
36 Correct 433 ms 210656 KB Output is correct
37 Correct 214 ms 88232 KB Output is correct
38 Correct 312 ms 132624 KB Output is correct
39 Correct 361 ms 202200 KB Output is correct
40 Correct 382 ms 245768 KB Output is correct
41 Correct 279 ms 58152 KB Output is correct
42 Correct 393 ms 94980 KB Output is correct
43 Correct 482 ms 91144 KB Output is correct
44 Correct 666 ms 151108 KB Output is correct
45 Correct 216 ms 66612 KB Output is correct
46 Correct 300 ms 115064 KB Output is correct
47 Correct 353 ms 138516 KB Output is correct
48 Correct 428 ms 211000 KB Output is correct