oj.uz

Submission #889433

# Submission time Handle Problem Language Result Execution time Memory
889433 2023-12-19T16:39:34 Z dimashhh Klasika (COCI20_klasika) C++17
33 / 110
 531 ms 524288 KB 
#include <bits/stdc++.h>
using namespace std;
const int N = 3e5 + 1, MOD = 998244353,b = 30;
typedef long long ll;

vector<pair<int,int>> ans;
struct node{
    node *next[2];
    int col = 0;
    node(){
        col = 0;
        for(int i = 0;i < 2;i++){
            next[i] = nullptr;
        }
    }
};
using pnode = node *;
void add(pnode &x,int val,int delta){
    if(!x) x = new node();
    pnode f = x;
    for(int i = b;i >= 0;i--){
        int nv = ((val >> i) & 1);
        // cout << nv << "x\n";
        if(!x->next[nv]){
            x->next[nv] = new node();
        }
        x = x->next[nv];
        x->col+=delta;
    }
    x = f;

}
int get(int val,pnode x){
    int res = 0;
    if(!x) return 0;
    for(int i = b;i >= 0;i--){
        int nv = ((val >> i) & 1);
        nv = (!nv);
        // cout << (x->next[nv] ? 1 : 0) << ' ' << (x->next[!nv] ? 1 : 0) << '\n';
        if(x->next[nv] && x->next[nv]->col){
            res += (1ll << i);
            x = x->next[nv];
        }else if(x->next[(!nv)] && x->next[!nv]->col){
            x = x->next[(!nv)];
        }
    }
    return res;
}
pnode T[N * 4];
int n,q,tadd[N],d[N],s[N];
vector<pair<int,int>> g[N],qr[N];
void dfs(int v){
    s[v] = 1;
    for(auto [to,w]:g[v]){
        d[to] = (d[v] ^ w);
        dfs(to);
        s[v] += s[to];
    }
}
void upd(int pos,int val,int d,int v = 1,int tl = 1,int tr = N){
    add(T[v],val,d);
    // if(tl == tr && tl == 1){
    //     cout << val << "x\n";
    // }
    // cout << v << " " << tl << ' ' << tr << "f\n";
    if(tl == tr) return;
    int tm = (tl + tr) >> 1;
    if(pos <= tm) upd(pos,val,d,v+v,tl,tm);
    else upd(pos,val,d,v+v+1,tm+1,tr);
}
void add_sub(int v,int dd){
    upd(tadd[v],d[v],dd);
    // cout << tadd[v] << ' ' << d[v] << ' ' << dd << "q\n";
    for(auto [to,w]:g[v]){
        add_sub(to,dd);
    }
}
int get(int l,int r,int x,int v = 1,int tl = 1,int tr = N){
    if(l > r || tl > r || l > tr) return 0;
    if(tl >= l && tr <= r){
        // cout << v << " " << tl << ' ' << tr << '\n';
        return get(x,T[v]);
    }else{
        int tm = (tl + tr) >> 1;
        return max(get(l,r,x,v+v,tl,tm),get(l,r,x,v+v+1,tm+1,tr));
    }
}
void _dfs(int v,bool keep = true){
    int b = -1;
    for(auto [to,w]:g[v]){
        if(b == -1 || s[to] > s[b]){
            b = to;
        }
    }
    for(auto [to,w]:g[v]){
        if(to != b){
            _dfs(to,false);
        }
    }
    if(b != -1){
        _dfs(b,1);
    }
    for(auto [to,w]:g[v]){
        if(to == b) continue;
        add_sub(to,1);
    }
    upd(tadd[v],d[v],1);
    // cout << tadd[v] << ' ' << d[v] << ' ' << 1 << "q\n";
    // cout << b << '\n';
    for(auto [x,y]:qr[v]){
        // cout << 1 << ' ' << y - 1 << ' ' << x << ' ' << d[x] << " " << get(1,y - 1,d[x]) << '\n';
        ans.push_back({y,get(1,y - 1,d[x])});
        // exit(0);
    }
    if(!keep) add_sub(v,-1);
}
void test(){
    cin >> q;
    n = 1;
    tadd[1] = 1;
    for(int i = 1;i <= q;i++){
        string tp;
        cin >> tp;
        if(tp[0] == 'A'){
            n++;
            int x,y;
            cin >> x >> y;
            g[x].push_back({n,y});
            tadd[n] = i + 1;
        }else{
            int a,b;
            cin >> a >> b;
            qr[b].push_back({a,i + 1});
        }
    }
    dfs(1);
    _dfs(1);
    sort(ans.begin(),ans.end());
    for(auto [x,y]:ans){
        cout << y << '\n';
    }
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int T = 1; // cin >> T;
    while (T--)
        test();
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 19804 KB Output is correct
2 Correct 5 ms 20316 KB Output is correct
3 Correct 5 ms 20824 KB Output is correct
4 Correct 6 ms 21340 KB Output is correct
5 Correct 4 ms 19544 KB Output is correct
6 Correct 6 ms 20316 KB Output is correct
7 Correct 6 ms 20828 KB Output is correct
8 Correct 7 ms 21432 KB Output is correct
9 Correct 5 ms 19804 KB Output is correct
10 Correct 5 ms 20572 KB Output is correct
11 Correct 6 ms 21080 KB Output is correct
12 Correct 7 ms 21576 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 19804 KB Output is correct
2 Correct 5 ms 20316 KB Output is correct
3 Correct 5 ms 20824 KB Output is correct
4 Correct 6 ms 21340 KB Output is correct
5 Correct 4 ms 19544 KB Output is correct
6 Correct 6 ms 20316 KB Output is correct
7 Correct 6 ms 20828 KB Output is correct
8 Correct 7 ms 21432 KB Output is correct
9 Correct 5 ms 19804 KB Output is correct
10 Correct 5 ms 20572 KB Output is correct
11 Correct 6 ms 21080 KB Output is correct
12 Correct 7 ms 21576 KB Output is correct
13 Correct 12 ms 25692 KB Output is correct
14 Correct 18 ms 31492 KB Output is correct
15 Correct 24 ms 37200 KB Output is correct
16 Correct 28 ms 42580 KB Output is correct
17 Correct 13 ms 25432 KB Output is correct
18 Correct 22 ms 31064 KB Output is correct
19 Correct 31 ms 36948 KB Output is correct
20 Correct 40 ms 42068 KB Output is correct
21 Correct 13 ms 25436 KB Output is correct
22 Correct 19 ms 31348 KB Output is correct
23 Correct 33 ms 37084 KB Output is correct
24 Correct 32 ms 42104 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Runtime error 531 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 19804 KB Output is correct
2 Correct 5 ms 20316 KB Output is correct
3 Correct 5 ms 20824 KB Output is correct
4 Correct 6 ms 21340 KB Output is correct
5 Correct 4 ms 19544 KB Output is correct
6 Correct 6 ms 20316 KB Output is correct
7 Correct 6 ms 20828 KB Output is correct
8 Correct 7 ms 21432 KB Output is correct
9 Correct 5 ms 19804 KB Output is correct
10 Correct 5 ms 20572 KB Output is correct
11 Correct 6 ms 21080 KB Output is correct
12 Correct 7 ms 21576 KB Output is correct
13 Correct 12 ms 25692 KB Output is correct
14 Correct 18 ms 31492 KB Output is correct
15 Correct 24 ms 37200 KB Output is correct
16 Correct 28 ms 42580 KB Output is correct
17 Correct 13 ms 25432 KB Output is correct
18 Correct 22 ms 31064 KB Output is correct
19 Correct 31 ms 36948 KB Output is correct
20 Correct 40 ms 42068 KB Output is correct
21 Correct 13 ms 25436 KB Output is correct
22 Correct 19 ms 31348 KB Output is correct
23 Correct 33 ms 37084 KB Output is correct
24 Correct 32 ms 42104 KB Output is correct
25 Runtime error 531 ms 524288 KB Execution killed with signal 9
26 Halted 0 ms 0 KB -