oj.uz

Submission #1091207

# Submission time Handle Problem Language Result Execution time Memory
1091207 2024-09-20T06:35:32 Z kawaii Klasika (COCI20_klasika) C++14
33 / 110
 898 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, a[MAXN], val[MAXN], tin[MAXN], tout[MAXN], cnt = 0, mod = 1e9 + 7;
vector<int> adj[MAXN];
mt19937_64 rng;

int mul(int x, int y){
    if(y == 0) return 1;
    int ans = mul(x, y / 2);
    if(y % 2 == 0) return (ans * ans) % mod;
    else return (((ans * ans) % mod) * x) % mod;
}

struct Query{
    string operation;
    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);
            // cout << bit <<" "<< crr_id <<"    "<< next[0][crr_id] <<" "<< next[1][crr_id] << "\n";
            if(!next[bit][crr_id]) bit = !bit;
            else ans |= (1 << i);
            if(!next[bit][crr_id]) return ans;
            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) 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){
        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);
    st[crr].add(val);
}

void solve(){
    dfs(1);
    node = 1;
    update(1, 1, cnt, 1, 0);
    // cout << cnt << "\n";
    for(int i = 1; i <= n; i++){
        if(q[i].operation == "Add") node++, update(1, 1, cnt, tin[node], val[node]);
        else cout << get(1, 1, cnt, tin[q[i].y], tout[q[i].y], val[q[i].x]) << "\n";
    }
    // cout << get(1, 1, cnt, 1, cnt, 6) << "\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 >> q[i].operation >> q[i].x >> q[i].y;
        if(q[i].operation == "Add"){
            val[++node] = val[q[i].x] ^ q[i].y;
            adj[q[i].x].push_back(node);
        }
    }
    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:74:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   74 |     int mid = l + r >> 1;
      |               ~~^~~
klasika.cpp: In function 'void update(int, int, int, int, int)':
klasika.cpp:84:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   84 |     int mid = l + r >> 1;
      |               ~~^~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 56920 KB Output is correct
2 Correct 30 ms 56924 KB Output is correct
3 Correct 24 ms 56920 KB Output is correct
4 Correct 23 ms 57172 KB Output is correct
5 Correct 24 ms 56924 KB Output is correct
6 Correct 24 ms 56920 KB Output is correct
7 Correct 24 ms 56920 KB Output is correct
8 Correct 33 ms 57172 KB Output is correct
9 Correct 24 ms 56924 KB Output is correct
10 Correct 24 ms 56864 KB Output is correct
11 Correct 24 ms 56924 KB Output is correct
12 Correct 24 ms 57156 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 56920 KB Output is correct
2 Correct 30 ms 56924 KB Output is correct
3 Correct 24 ms 56920 KB Output is correct
4 Correct 23 ms 57172 KB Output is correct
5 Correct 24 ms 56924 KB Output is correct
6 Correct 24 ms 56920 KB Output is correct
7 Correct 24 ms 56920 KB Output is correct
8 Correct 33 ms 57172 KB Output is correct
9 Correct 24 ms 56924 KB Output is correct
10 Correct 24 ms 56864 KB Output is correct
11 Correct 24 ms 56924 KB Output is correct
12 Correct 24 ms 57156 KB Output is correct
13 Correct 27 ms 57988 KB Output is correct
14 Correct 28 ms 59220 KB Output is correct
15 Correct 35 ms 60536 KB Output is correct
16 Correct 36 ms 62160 KB Output is correct
17 Correct 26 ms 57952 KB Output is correct
18 Correct 28 ms 59448 KB Output is correct
19 Correct 30 ms 60252 KB Output is correct
20 Correct 32 ms 62036 KB Output is correct
21 Correct 26 ms 57948 KB Output is correct
22 Correct 28 ms 59276 KB Output is correct
23 Correct 30 ms 60456 KB Output is correct
24 Correct 31 ms 61932 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 353 ms 208012 KB Output is correct
2 Correct 633 ms 374412 KB Output is correct
3 Correct 898 ms 524288 KB Output is correct
4 Runtime error 829 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 24 ms 56920 KB Output is correct
2 Correct 30 ms 56924 KB Output is correct
3 Correct 24 ms 56920 KB Output is correct
4 Correct 23 ms 57172 KB Output is correct
5 Correct 24 ms 56924 KB Output is correct
6 Correct 24 ms 56920 KB Output is correct
7 Correct 24 ms 56920 KB Output is correct
8 Correct 33 ms 57172 KB Output is correct
9 Correct 24 ms 56924 KB Output is correct
10 Correct 24 ms 56864 KB Output is correct
11 Correct 24 ms 56924 KB Output is correct
12 Correct 24 ms 57156 KB Output is correct
13 Correct 27 ms 57988 KB Output is correct
14 Correct 28 ms 59220 KB Output is correct
15 Correct 35 ms 60536 KB Output is correct
16 Correct 36 ms 62160 KB Output is correct
17 Correct 26 ms 57952 KB Output is correct
18 Correct 28 ms 59448 KB Output is correct
19 Correct 30 ms 60252 KB Output is correct
20 Correct 32 ms 62036 KB Output is correct
21 Correct 26 ms 57948 KB Output is correct
22 Correct 28 ms 59276 KB Output is correct
23 Correct 30 ms 60456 KB Output is correct
24 Correct 31 ms 61932 KB Output is correct
25 Correct 353 ms 208012 KB Output is correct
26 Correct 633 ms 374412 KB Output is correct
27 Correct 898 ms 524288 KB Output is correct
28 Runtime error 829 ms 524288 KB Execution killed with signal 9
29 Halted 0 ms 0 KB -