oj.uz

Submission #235542

# Submission time Handle Problem Language Result Execution time Memory
235542 2020-05-28T13:24:21 Z doowey Klasika (COCI20_klasika) C++14
0 / 110
 815 ms 203748 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const int N = (int)2e5 + 100;
const int SZ = (int)6e5 + 100;
int trie[SZ][2];
int id;
set<int> F[SZ];
vector<int> T[N];
int tin[N], tout[N];
ll vl[N];
int tt;

int typ[N];
int ff[N];
int ss[N];
int ads[N];

void dfs(int u){
  tin[u] = ++tt;
  for(auto x : T[u])
    dfs(x);
  tout[u]=tt;
}

int main(){
  fastIO;
  int q;
  cin >> q;
  int idx = 1;
  string tiq;
  for(int i = 1; i <= q; i ++ ){
    cin >> tiq;
    if(tiq == "Add"){
      typ[i] = 0;
      idx ++ ;
      ads[i]=idx;
      cin >> ff[i] >> ss[i];
      T[ff[i]].push_back(idx);
      vl[idx] = (vl[ff[i]] ^ ss[i]);
    }
    else{
      typ[i] = 1;
      cin >> ff[i] >> ss[i];
    }
  }
  dfs(1);
  ll vv;
  int root;
  ll ans;
  int nn;
  int cld;
  int it;
  int cur, nx;
  for(int pp = 1; pp <= q; pp ++ ){
    if(typ[pp] == 0){
      cur = 0;
      for(int j = 30 ; j >= 0 ; j -- ){
        if((vl[ads[pp]] & (1ll << j))){
          nx = 1;
        }
        else{
          nx = 0;
        }
        if(trie[cur][nx] == 0){
          trie[cur][nx] = ++id;
        }
        cur = trie[cur][nx];
        F[cur].insert(tin[ads[pp]]);
      }
    }
    else{
      vv = vl[ff[pp]];
      root = ss[pp];
      cur = 0;
      ans = 0;
      for(int j = 30; j >= 0; j -- ){
        if((vv & (1ll << j))){
          nx = 1;
        }
        else{
          nx = 0;
        }
        for(int d = 1; d >= 0 ; d -- ){
          nn = (nx ^ d);
          if(trie[cur][nn] == 0) continue;
          cld = trie[cur][nn];
          auto qq = F[cld].lower_bound(tin[root]);
          if(qq == F[cld].end() || (*qq)  > tout[root]){
            continue;
          }
          else{
            if(d) ans |= (1ll << j);
            cur = trie[cur][nn];
            break;
          }
  
        }
      }
      cout << ans << "\n";
    }
  }
  return 0;
}

Compilation message

klasika.cpp: In function 'int main()':
klasika.cpp:63:7: warning: unused variable 'it' [-Wunused-variable]
   int it;
       ^~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 33408 KB Output is correct
2 Incorrect 27 ms 33408 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 33408 KB Output is correct
2 Incorrect 27 ms 33408 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Runtime error 815 ms 203748 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 33408 KB Output is correct
2 Incorrect 27 ms 33408 KB Output isn't correct
3 Halted 0 ms 0 KB -