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Submission #1103742

# Submission time Handle Problem Language Result Execution time Memory
1103742 2024-10-21T15:33:02 Z FubuGold Klasika (COCI20_klasika) C++11
110 / 110
 2175 ms 431864 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 200000;
const int LG = __lg(MAXN);

struct Trie {
    struct Node {
        Node *ch[2];
        set<int> id;
        Node() {
            ch[0] = ch[1] = nullptr;
        }
        bool check(int l,int r) {
            auto it = id.lower_bound(l);
            return it != id.end() && *it <= r;
        }
    };
    Node *head = new Node();
    void add(int x,int id) {
        Node *cur = head;
        for (int i=30;i>=0;i--) {
            int c = (x >> i) & 1;
            if (cur->ch[c] == nullptr) cur->ch[c] = new Node();
            cur = cur->ch[c];
            cur->id.insert(id);
        }
    }
    int query(int l,int r,int x) {
        return query_recur(l,r,x,head,30);
    }
    int query_recur(int l,int r,int x,Node *cur,int cur_b) {
        if (cur_b < 0) return 0;
        if ((x >> cur_b) & 1) {
            if (cur->ch[0] == nullptr || !cur->ch[0]->check(l,r))
                return query_recur(l,r,x,cur->ch[1],cur_b-1);
            else return (1 << cur_b) | query_recur(l,r,x,cur->ch[0],cur_b-1);
        }
        else {
            if (cur->ch[1] == nullptr || !cur->ch[1]->check(l,r))
                return query_recur(l,r,x,cur->ch[0],cur_b-1);
            else return (1 << cur_b) | query_recur(l,r,x,cur->ch[1],cur_b-1);
        }
    }
} trie;

struct Query {
    int type;
    int x,y;
    Query(){};
} query[MAXN+1];

vector<int> adj[MAXN+1];
int xor_p[MAXN+1];
int tin[MAXN+1],tout[MAXN+1];
int timeDFS = 0;

void dfs(int u) {
    tin[u] = ++timeDFS;
    for (int i=0;i<adj[u].size();i++) {
        int v = adj[u][i];
        dfs(v);
    }
    tout[u] = timeDFS;
}

int main() {
    cin.tie(0) -> sync_with_stdio(0);
    int q; cin >> q;
    int cnt = 1;
    for (int i=1;i<=q;i++) {
        string s; cin >> s >> query[i].x >> query[i].y;
        if (s == "Add") {
            cnt++;
            adj[query[i].x].push_back(cnt);
            xor_p[cnt] = xor_p[query[i].x] ^ query[i].y;
        }
        else {
            query[i].type = 1;
        }
    }
    dfs(1);
    cnt = 1;
    trie.add(0,1);
    for (int i=1;i<=q;i++) {
        if (query[i].type == 0) {
            cnt++;
            trie.add(xor_p[cnt],tin[cnt]);
        }
        else {
//            cerr << query[i].y << ' ' << tin[query[i].y] << ' ' << tout[query[i].y] << '\n';
            cout << trie.query(tin[query[i].y],tout[query[i].y],xor_p[query[i].x]) << '\n';
        }
    }
    return 0;
}

Compilation message

klasika.cpp: In function 'void dfs(int)':
klasika.cpp:61:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     for (int i=0;i<adj[u].size();i++) {
      |                  ~^~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6736 KB Output is correct
2 Correct 3 ms 6904 KB Output is correct
3 Correct 3 ms 6880 KB Output is correct
4 Correct 2 ms 6996 KB Output is correct
5 Correct 2 ms 6904 KB Output is correct
6 Correct 2 ms 6740 KB Output is correct
7 Correct 3 ms 6996 KB Output is correct
8 Correct 2 ms 6996 KB Output is correct
9 Correct 2 ms 6740 KB Output is correct
10 Correct 2 ms 6740 KB Output is correct
11 Correct 3 ms 7160 KB Output is correct
12 Correct 3 ms 6996 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6736 KB Output is correct
2 Correct 3 ms 6904 KB Output is correct
3 Correct 3 ms 6880 KB Output is correct
4 Correct 2 ms 6996 KB Output is correct
5 Correct 2 ms 6904 KB Output is correct
6 Correct 2 ms 6740 KB Output is correct
7 Correct 3 ms 6996 KB Output is correct
8 Correct 2 ms 6996 KB Output is correct
9 Correct 2 ms 6740 KB Output is correct
10 Correct 2 ms 6740 KB Output is correct
11 Correct 3 ms 7160 KB Output is correct
12 Correct 3 ms 6996 KB Output is correct
13 Correct 5 ms 8020 KB Output is correct
14 Correct 6 ms 9300 KB Output is correct
15 Correct 8 ms 10656 KB Output is correct
16 Correct 9 ms 11604 KB Output is correct
17 Correct 5 ms 7764 KB Output is correct
18 Correct 8 ms 9044 KB Output is correct
19 Correct 7 ms 10324 KB Output is correct
20 Correct 13 ms 11604 KB Output is correct
21 Correct 5 ms 7920 KB Output is correct
22 Correct 9 ms 9044 KB Output is correct
23 Correct 8 ms 10324 KB Output is correct
24 Correct 11 ms 11348 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 469 ms 119968 KB Output is correct
2 Correct 886 ms 228528 KB Output is correct
3 Correct 1220 ms 329804 KB Output is correct
4 Correct 1704 ms 431416 KB Output is correct
5 Correct 503 ms 120856 KB Output is correct
6 Correct 960 ms 223980 KB Output is correct
7 Correct 1334 ms 323028 KB Output is correct
8 Correct 1821 ms 422248 KB Output is correct
9 Correct 439 ms 120396 KB Output is correct
10 Correct 781 ms 225132 KB Output is correct
11 Correct 1178 ms 325708 KB Output is correct
12 Correct 1623 ms 424684 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6736 KB Output is correct
2 Correct 3 ms 6904 KB Output is correct
3 Correct 3 ms 6880 KB Output is correct
4 Correct 2 ms 6996 KB Output is correct
5 Correct 2 ms 6904 KB Output is correct
6 Correct 2 ms 6740 KB Output is correct
7 Correct 3 ms 6996 KB Output is correct
8 Correct 2 ms 6996 KB Output is correct
9 Correct 2 ms 6740 KB Output is correct
10 Correct 2 ms 6740 KB Output is correct
11 Correct 3 ms 7160 KB Output is correct
12 Correct 3 ms 6996 KB Output is correct
13 Correct 5 ms 8020 KB Output is correct
14 Correct 6 ms 9300 KB Output is correct
15 Correct 8 ms 10656 KB Output is correct
16 Correct 9 ms 11604 KB Output is correct
17 Correct 5 ms 7764 KB Output is correct
18 Correct 8 ms 9044 KB Output is correct
19 Correct 7 ms 10324 KB Output is correct
20 Correct 13 ms 11604 KB Output is correct
21 Correct 5 ms 7920 KB Output is correct
22 Correct 9 ms 9044 KB Output is correct
23 Correct 8 ms 10324 KB Output is correct
24 Correct 11 ms 11348 KB Output is correct
25 Correct 469 ms 119968 KB Output is correct
26 Correct 886 ms 228528 KB Output is correct
27 Correct 1220 ms 329804 KB Output is correct
28 Correct 1704 ms 431416 KB Output is correct
29 Correct 503 ms 120856 KB Output is correct
30 Correct 960 ms 223980 KB Output is correct
31 Correct 1334 ms 323028 KB Output is correct
32 Correct 1821 ms 422248 KB Output is correct
33 Correct 439 ms 120396 KB Output is correct
34 Correct 781 ms 225132 KB Output is correct
35 Correct 1178 ms 325708 KB Output is correct
36 Correct 1623 ms 424684 KB Output is correct
37 Correct 838 ms 123908 KB Output is correct
38 Correct 1275 ms 228432 KB Output is correct
39 Correct 1612 ms 332364 KB Output is correct
40 Correct 1596 ms 431864 KB Output is correct
41 Correct 922 ms 121164 KB Output is correct
42 Correct 1408 ms 224124 KB Output is correct
43 Correct 1805 ms 323420 KB Output is correct
44 Correct 2175 ms 421520 KB Output is correct
45 Correct 1076 ms 120780 KB Output is correct
46 Correct 1513 ms 225100 KB Output is correct
47 Correct 1612 ms 324544 KB Output is correct
48 Correct 1966 ms 424612 KB Output is correct