oj.uz

Submission #1091216

# Submission time Handle Problem Language Result Execution time Memory
1091216 2024-09-20T07:32:20 Z kawaii Klasika (COCI20_klasika) C++17
33 / 110
 1556 ms 524288 KB 
#include <bits/stdc++.h>
using namespace std;
// #define int long long
#define fi first
#define se second

const int MAXN = 2e5 + 5;
int t, n, m, k, node = 1, val[MAXN], tin[MAXN], tout[MAXN], cnt = 0, max_dist = 0;
string s;
vector<int> adj[MAXN];
mt19937_64 rng;

struct Query{
    char ch;
    int x, y;
};

Query q[MAXN];

void dfs(int u){
    tin[u] = ++cnt;
    for(auto i: adj[u]) dfs(i);
    tout[u] = cnt;
}

struct Node{
    int size = 0;
    vector<int> next[2];
    void add(int x){
        if(!size){   
            next[0].push_back(0);
            next[1].push_back(0);
        }
        int crr_id = 0;
        for(int i = 30; i >= 0; i--){
            bool bit = (((1 << i) & x) > 0);
            if(!next[bit][crr_id]){
                next[0].push_back(0);
                next[1].push_back(0);
                next[bit][crr_id] = ++size;
            }
            crr_id = next[bit][crr_id];
        }
    }
    int query(int x){
        if(!size){   
            next[0].push_back(0);
            next[1].push_back(0);
        }
        int crr_id = 0, ans = 0;
        for(int i = 30; i >= 0; i--){
            bool bit = !((1 << i) & x);
            if(!next[bit][crr_id]) bit = !bit;
            else ans |= (1 << i);
            crr_id = next[bit][crr_id]; 
        }
        return ans;
    }
};

Node st[MAXN * 4];

int get(int crr, int l, int r, int lf, int rt, int val){
    if(l > rt || r < lf) return 0;
    if(lf <= l && r <= rt && r - l + 1 <= max_dist) return st[crr].query(val);
    int mid = l + r >> 1;
    return max(get(crr * 2, l, mid, lf, rt, val), get(crr * 2 + 1, mid + 1, r, lf, rt, val));
}

void update(int crr, int l, int r, int id, int val){
    if(l > id || r < id) return;
    if(l == r){
        if(r - l + 1 <= max_dist) st[crr].add(val);
        return;
    }
    int mid = l + r >> 1;
    update(crr * 2, l, mid, id, val);
    update(crr * 2 + 1, mid + 1, r, id, val);
    if(r - l + 1 <= max_dist) st[crr].add(val);
}

void solve(){
    dfs(1);
    node = 1;
    max_dist = max(1, cnt / 32);
    for(int i = 1; i <= n; i++){
        if(q[i].ch == 'A') node++, update(1, 1, cnt, tin[node], val[node]);
        else{
            int ans = get(1, 1, cnt, tin[q[i].y], tout[q[i].y], val[q[i].x]);
            if(tin[q[i].y] == 1) ans = max(ans, val[q[i].x]);
            cout << ans << "\n";
        }
    }
}

signed main(){
    ios_base::sync_with_stdio(NULL); cin.tie(nullptr); cout.tie(nullptr);
    // rng.seed((int)main ^ time(0));
    #ifdef Kawaii
        auto starttime = chrono::high_resolution_clock::now();
    #endif

    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> s >> q[i].x >> q[i].y;
        if(s == "Add"){
            q[i].ch = 'A';
            val[++node] = val[q[i].x] ^ q[i].y;
            adj[q[i].x].push_back(node);
        }
        else q[i].ch = 'Q';
    }
    solve();

    #ifdef Kawaii
        auto endtime = chrono::high_resolution_clock::now();
        auto duration = chrono::duration_cast<chrono::milliseconds>(endtime - starttime).count(); 
        cout << "\n=====" << "\nUsed: " << duration << " ms\n";
    #endif
}

Compilation message

klasika.cpp: In function 'int get(int, int, int, int, int, int)':
klasika.cpp:66:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   66 |     int mid = l + r >> 1;
      |               ~~^~~
klasika.cpp: In function 'void update(int, int, int, int, int)':
klasika.cpp:76:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   76 |     int mid = l + r >> 1;
      |               ~~^~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 48988 KB Output is correct
2 Correct 21 ms 48988 KB Output is correct
3 Correct 21 ms 48988 KB Output is correct
4 Correct 20 ms 48988 KB Output is correct
5 Correct 21 ms 48984 KB Output is correct
6 Correct 21 ms 48964 KB Output is correct
7 Correct 20 ms 48988 KB Output is correct
8 Correct 20 ms 49024 KB Output is correct
9 Correct 20 ms 49008 KB Output is correct
10 Correct 20 ms 48884 KB Output is correct
11 Correct 20 ms 48984 KB Output is correct
12 Correct 25 ms 48988 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 48988 KB Output is correct
2 Correct 21 ms 48988 KB Output is correct
3 Correct 21 ms 48988 KB Output is correct
4 Correct 20 ms 48988 KB Output is correct
5 Correct 21 ms 48984 KB Output is correct
6 Correct 21 ms 48964 KB Output is correct
7 Correct 20 ms 48988 KB Output is correct
8 Correct 20 ms 49024 KB Output is correct
9 Correct 20 ms 49008 KB Output is correct
10 Correct 20 ms 48884 KB Output is correct
11 Correct 20 ms 48984 KB Output is correct
12 Correct 25 ms 48988 KB Output is correct
13 Correct 27 ms 49748 KB Output is correct
14 Correct 28 ms 50524 KB Output is correct
15 Correct 28 ms 51548 KB Output is correct
16 Correct 26 ms 52312 KB Output is correct
17 Correct 23 ms 49500 KB Output is correct
18 Correct 24 ms 50524 KB Output is correct
19 Correct 24 ms 51288 KB Output is correct
20 Correct 25 ms 52044 KB Output is correct
21 Correct 25 ms 49500 KB Output is correct
22 Correct 24 ms 50268 KB Output is correct
23 Correct 27 ms 51536 KB Output is correct
24 Correct 25 ms 51988 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1556 ms 198592 KB Output is correct
2 Correct 1131 ms 326036 KB Output is correct
3 Correct 1508 ms 434400 KB Output is correct
4 Runtime error 998 ms 524288 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 48988 KB Output is correct
2 Correct 21 ms 48988 KB Output is correct
3 Correct 21 ms 48988 KB Output is correct
4 Correct 20 ms 48988 KB Output is correct
5 Correct 21 ms 48984 KB Output is correct
6 Correct 21 ms 48964 KB Output is correct
7 Correct 20 ms 48988 KB Output is correct
8 Correct 20 ms 49024 KB Output is correct
9 Correct 20 ms 49008 KB Output is correct
10 Correct 20 ms 48884 KB Output is correct
11 Correct 20 ms 48984 KB Output is correct
12 Correct 25 ms 48988 KB Output is correct
13 Correct 27 ms 49748 KB Output is correct
14 Correct 28 ms 50524 KB Output is correct
15 Correct 28 ms 51548 KB Output is correct
16 Correct 26 ms 52312 KB Output is correct
17 Correct 23 ms 49500 KB Output is correct
18 Correct 24 ms 50524 KB Output is correct
19 Correct 24 ms 51288 KB Output is correct
20 Correct 25 ms 52044 KB Output is correct
21 Correct 25 ms 49500 KB Output is correct
22 Correct 24 ms 50268 KB Output is correct
23 Correct 27 ms 51536 KB Output is correct
24 Correct 25 ms 51988 KB Output is correct
25 Correct 1556 ms 198592 KB Output is correct
26 Correct 1131 ms 326036 KB Output is correct
27 Correct 1508 ms 434400 KB Output is correct
28 Runtime error 998 ms 524288 KB Execution killed with signal 9
29 Halted 0 ms 0 KB -