oj.uz

Submission #713230

# Submission time Handle Problem Language Result Execution time Memory
713230 2023-03-21T10:34:53 Z gokussjz Klasika (COCI20_klasika) C++17
110 / 110
 4123 ms 517320 KB 
//  ॐ
#include <bits/stdc++.h>
using namespace std;
#define PI 3.14159265358979323846
#define ll long long int
 
 
const int N=2e5+5;
vector<pair<int,int>> adj[N];
int tin[N],tout[N],val[N];
int curr=0;
 
static const int K = 2;      // check
static const int bits = 30;  // check

struct node{

    array<int,K> next;
    int cnt;
    set<pair<int,int>> s;
};

struct TRIE{

     vector<node> trie;
     int root,sz;

     inline node create(){
        node ret;
        ret.cnt=0;
        ret.s.clear();
        for(int i=0;i<K;i++){
            ret.next[i]=-1;
        }

        return ret;
     }

     inline void init(){

          trie.clear();
          trie.push_back(create());
          sz=1;
          root=0;
     }

     void insert(int val,int id){

         int v=root;
         ++trie[v].cnt;
         trie[v].s.insert({tin[id],tout[id]});

         for(int i=bits;i>=0;i--){
              int temp=val&(1<<i) ? 1 : 0;
              if(trie[v].next[temp]==-1){
                   trie.push_back(create());
                   trie[v].next[temp]=(sz++);
              }
              v=trie[v].next[temp];
              trie[v].s.insert({tin[id],tout[id]});
              ++trie[v].cnt;
         }
     }

     void erase(int val,int id){

         int v=root;
         --trie[v].cnt;
         trie[v].s.erase({tin[id],tout[id]});
         for(int i=bits;i>=0;i--){
            int temp=val&(1<<i) ? 1 : 0;
            v=trie[v].next[temp];
            trie[v].s.erase({tin[id],tout[id]});
            --trie[v].cnt;
         }
     }

    int max_query(int val,int y){

          int ret=0,v=root;
          for(int i=bits;i>=0;i--){
              int temp=val&(1<<i) ? 0 : 1;
              bool poss=0;
              if(trie[v].next[temp]!=-1){
                    auto it=trie[trie[v].next[temp]].s.lower_bound({tin[y],tout[y]});
                    if(it!=trie[trie[v].next[temp]].s.end()){
                          int end=(*it).second;
                          if(end<=tout[y]){
                                poss=1;
                          }
                    }
              }

              if(!poss){
                 temp^=1;
              }

              else{
                ret+=(1<<i);
              }

              v=trie[v].next[temp];

          }
          return ret;            
     }
};

void dfs(int v,int p,int xr){
     tin[v]=(++curr);
     val[v]=xr;
     for(auto [u,w] : adj[v]){
          if(u==p)
             continue;
          dfs(u,v,(xr^w));
     }
     tout[v]=(++curr);

}


int main(){
   
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
 
    int test = 1;
    // cin>>test;
 
 
    while(test--){
                    
                    int q;
                    cin>>q;

                    vector<array<int,3>> v;
                    int tot=1;

                    for(int i=0;i<q;i++){
                         string s;
                         int a,b;
                         cin>>s>>a>>b;
                         if(s[0]=='A'){
                             ++tot;
                             v.push_back({1,tot,b});
                             adj[a].push_back({tot,b});
                             adj[tot].push_back({a,b});
                         }
                         else{
                             v.push_back({2,a,b});
                         }
                    }

                    vector<int> ans;
                    TRIE tr;
                    tr.init();

                    reverse(v.begin(),v.end());
                    dfs(1,1,0);

                    for(int i=1;i<=tot;i++){
                        tr.insert(val[i],i);
                    }

                    for(auto [type,a,b] : v){
                          if(type==1){
                               // cout<<a<<' '<<val[a]<<'\n';
                               tr.erase(val[a],a);
                          }

                          else{
                              ans.push_back(tr.max_query(val[a],b));
                          }
                    }

                    reverse(ans.begin(),ans.end());
                    for(auto u : ans){
                        cout<<u<<'\n';
                    }

                    // cout<<'\n'; 
                  
        
   }
        return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5204 KB Output is correct
2 Correct 3 ms 5204 KB Output is correct
3 Correct 3 ms 5408 KB Output is correct
4 Correct 4 ms 5532 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 3 ms 5204 KB Output is correct
7 Correct 3 ms 5452 KB Output is correct
8 Correct 4 ms 5532 KB Output is correct
9 Correct 4 ms 5152 KB Output is correct
10 Correct 4 ms 5332 KB Output is correct
11 Correct 3 ms 5456 KB Output is correct
12 Correct 3 ms 5536 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5204 KB Output is correct
2 Correct 3 ms 5204 KB Output is correct
3 Correct 3 ms 5408 KB Output is correct
4 Correct 4 ms 5532 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 3 ms 5204 KB Output is correct
7 Correct 3 ms 5452 KB Output is correct
8 Correct 4 ms 5532 KB Output is correct
9 Correct 4 ms 5152 KB Output is correct
10 Correct 4 ms 5332 KB Output is correct
11 Correct 3 ms 5456 KB Output is correct
12 Correct 3 ms 5536 KB Output is correct
13 Correct 7 ms 6696 KB Output is correct
14 Correct 12 ms 8392 KB Output is correct
15 Correct 11 ms 8644 KB Output is correct
16 Correct 13 ms 11800 KB Output is correct
17 Correct 8 ms 6688 KB Output is correct
18 Correct 9 ms 8264 KB Output is correct
19 Correct 11 ms 8600 KB Output is correct
20 Correct 13 ms 9588 KB Output is correct
21 Correct 6 ms 6688 KB Output is correct
22 Correct 9 ms 8276 KB Output is correct
23 Correct 12 ms 8564 KB Output is correct
24 Correct 13 ms 9540 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 808 ms 128916 KB Output is correct
2 Correct 1542 ms 255156 KB Output is correct
3 Correct 2243 ms 310536 KB Output is correct
4 Correct 3015 ms 517224 KB Output is correct
5 Correct 983 ms 126580 KB Output is correct
6 Correct 1870 ms 250824 KB Output is correct
7 Correct 2772 ms 304436 KB Output is correct
8 Correct 3811 ms 508128 KB Output is correct
9 Correct 805 ms 127020 KB Output is correct
10 Correct 1564 ms 251476 KB Output is correct
11 Correct 2348 ms 306700 KB Output is correct
12 Correct 3123 ms 509612 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5204 KB Output is correct
2 Correct 3 ms 5204 KB Output is correct
3 Correct 3 ms 5408 KB Output is correct
4 Correct 4 ms 5532 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 3 ms 5204 KB Output is correct
7 Correct 3 ms 5452 KB Output is correct
8 Correct 4 ms 5532 KB Output is correct
9 Correct 4 ms 5152 KB Output is correct
10 Correct 4 ms 5332 KB Output is correct
11 Correct 3 ms 5456 KB Output is correct
12 Correct 3 ms 5536 KB Output is correct
13 Correct 7 ms 6696 KB Output is correct
14 Correct 12 ms 8392 KB Output is correct
15 Correct 11 ms 8644 KB Output is correct
16 Correct 13 ms 11800 KB Output is correct
17 Correct 8 ms 6688 KB Output is correct
18 Correct 9 ms 8264 KB Output is correct
19 Correct 11 ms 8600 KB Output is correct
20 Correct 13 ms 9588 KB Output is correct
21 Correct 6 ms 6688 KB Output is correct
22 Correct 9 ms 8276 KB Output is correct
23 Correct 12 ms 8564 KB Output is correct
24 Correct 13 ms 9540 KB Output is correct
25 Correct 808 ms 128916 KB Output is correct
26 Correct 1542 ms 255156 KB Output is correct
27 Correct 2243 ms 310536 KB Output is correct
28 Correct 3015 ms 517224 KB Output is correct
29 Correct 983 ms 126580 KB Output is correct
30 Correct 1870 ms 250824 KB Output is correct
31 Correct 2772 ms 304436 KB Output is correct
32 Correct 3811 ms 508128 KB Output is correct
33 Correct 805 ms 127020 KB Output is correct
34 Correct 1564 ms 251476 KB Output is correct
35 Correct 2348 ms 306700 KB Output is correct
36 Correct 3123 ms 509612 KB Output is correct
37 Correct 1315 ms 129488 KB Output is correct
38 Correct 2001 ms 255728 KB Output is correct
39 Correct 2607 ms 312848 KB Output is correct
40 Correct 3334 ms 517320 KB Output is correct
41 Correct 1463 ms 127204 KB Output is correct
42 Correct 2354 ms 251096 KB Output is correct
43 Correct 3241 ms 304612 KB Output is correct
44 Correct 4123 ms 508384 KB Output is correct
45 Correct 1437 ms 127620 KB Output is correct
46 Correct 2224 ms 251924 KB Output is correct
47 Correct 2831 ms 305440 KB Output is correct
48 Correct 3620 ms 509832 KB Output is correct