oj.uz

Submission #930124

# Submission time Handle Problem Language Result Execution time Memory
930124 2024-02-18T15:32:27 Z duckindog Klasika (COCI20_klasika) C++14
33 / 110
 1182 ms 524288 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include<bits/stdc++.h>

using namespace std;

using pii = pair<int, int>;
const int N = 3e5 + 10;
int n;
struct Query {
  int a, t;
  Query(int a = 0, int t = 0) : a(a), t(t) {}
};
vector<Query> Q[N];

struct trie {
  int maxBit = 31;
  int it;
  vector<vector<int>> nwt;
  vector<int> t;

  set<int> S;
  map<int, int> tick;
  void add(int val, int time) { 
    S.insert(val);
    if (!tick[val] || tick[val] > time) tick[val] = time;

    int g = 0;
    for (int j = maxBit; j >= 1; --j) { 
      int bit = (val >> j - 1 & 1);

      while (nwt.size() <= g) nwt.push_back(vector<int>(2));

      if (!nwt[g][bit]) nwt[g][bit] = ++it;
      g = nwt[g][bit];

      while (t.size() <= it) t.push_back(N);
      t[g] = min(t[g], time);
    }
  }
  int get(int val, int time) { 
    int g = 0;
    int ret = 0;
    for (int j = maxBit; j >= 1; --j) { 
      int bit = (val >> j - 1 & 1);
      while (nwt.size() <= g) nwt.push_back(vector<int>(2));
      if (nwt[g][!bit] && t[nwt[g][!bit]] <= time) { 
        ret |= (1 << j - 1);
        g = nwt[g][!bit];
      } else g = nwt[g][bit];

    }
    return ret;
  }

  vector<pii> allValues() { 
    vector<pii> ret;
    for (auto &i : S) ret.push_back({i, tick[i]});
    return ret;
  }

  void clear() { 
    nwt.clear();
    t.clear();
    tick.clear();
    S.clear();
  }

} node[N];


vector<pii> ad[N];
int d[N], t[N];
int answer[N];
void dfs(int u, int pre = 0) { 
  int best = 0;
  for (const auto& [v, w] : ad[u]) { 
    if (v == pre) continue;
    dfs(v, u);
    if (!best || node[v].nwt.size() > node[best].nwt.size()) best = v;
  }
  swap(node[u], node[best]);
  for (const auto& [v, w] : ad[u]) { 
    if (v == pre || v == best) continue;
    for (auto &i : node[v].allValues()) node[u].add(i.first, i.second);
    node[v].clear();
  }
  node[u].add(d[u], t[u]);
  for (const auto& [a, time] : Q[u]) answer[time] = node[u].get(d[a], time);
}

int32_t main() { 
  cin.tie(0)->sync_with_stdio(0);
  
  cin >> n;
  int cnt = 1;
  for (int i = 1; i <= n; ++i) { 
    string ty;
    int x, y; 
    cin >> ty >> x >> y;
    if (ty == "Add") { 
      cnt += 1;
      ad[x].push_back({cnt, y});
      ad[cnt].push_back({x, y});
      d[cnt] = (d[x] ^ y);
      t[cnt] = i;
    } else { 
      Q[y].push_back(Query(x, i));
    }
  }

  memset(answer, -1, sizeof answer);
  dfs(1);
  for (int i = 1; i <= n; ++i) 
    if (answer[i] != -1) cout << answer[i] << "\n";
}

Compilation message

klasika.cpp: In member function 'void trie::add(int, int)':
klasika.cpp:30:27: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   30 |       int bit = (val >> j - 1 & 1);
      |                         ~~^~~
klasika.cpp:32:25: warning: comparison of integer expressions of different signedness: 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   32 |       while (nwt.size() <= g) nwt.push_back(vector<int>(2));
      |              ~~~~~~~~~~~^~~~
klasika.cpp:37:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   37 |       while (t.size() <= it) t.push_back(N);
      |              ~~~~~~~~~^~~~~
klasika.cpp: In member function 'int trie::get(int, int)':
klasika.cpp:45:27: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   45 |       int bit = (val >> j - 1 & 1);
      |                         ~~^~~
klasika.cpp:46:25: warning: comparison of integer expressions of different signedness: 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   46 |       while (nwt.size() <= g) nwt.push_back(vector<int>(2));
      |              ~~~~~~~~~~~^~~~
klasika.cpp:48:24: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   48 |         ret |= (1 << j - 1);
      |                      ~~^~~
klasika.cpp: In function 'void dfs(int, int)':
klasika.cpp:77:20: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   77 |   for (const auto& [v, w] : ad[u]) {
      |                    ^
klasika.cpp:83:20: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   83 |   for (const auto& [v, w] : ad[u]) {
      |                    ^
klasika.cpp:89:20: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   89 |   for (const auto& [a, time] : Q[u]) answer[time] = node[u].get(d[a], time);
      |                    ^

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 62772 KB Output is correct
2 Correct 15 ms 62812 KB Output is correct
3 Correct 15 ms 62972 KB Output is correct
4 Correct 15 ms 62812 KB Output is correct
5 Correct 15 ms 62812 KB Output is correct
6 Correct 16 ms 62820 KB Output is correct
7 Correct 16 ms 63064 KB Output is correct
8 Correct 18 ms 63068 KB Output is correct
9 Correct 16 ms 62808 KB Output is correct
10 Correct 15 ms 62812 KB Output is correct
11 Correct 15 ms 62952 KB Output is correct
12 Correct 16 ms 63064 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 62772 KB Output is correct
2 Correct 15 ms 62812 KB Output is correct
3 Correct 15 ms 62972 KB Output is correct
4 Correct 15 ms 62812 KB Output is correct
5 Correct 15 ms 62812 KB Output is correct
6 Correct 16 ms 62820 KB Output is correct
7 Correct 16 ms 63064 KB Output is correct
8 Correct 18 ms 63068 KB Output is correct
9 Correct 16 ms 62808 KB Output is correct
10 Correct 15 ms 62812 KB Output is correct
11 Correct 15 ms 62952 KB Output is correct
12 Correct 16 ms 63064 KB Output is correct
13 Correct 17 ms 63580 KB Output is correct
14 Correct 18 ms 64404 KB Output is correct
15 Correct 20 ms 64788 KB Output is correct
16 Correct 20 ms 66300 KB Output is correct
17 Correct 18 ms 64344 KB Output is correct
18 Correct 21 ms 65688 KB Output is correct
19 Correct 25 ms 67224 KB Output is correct
20 Correct 27 ms 68372 KB Output is correct
21 Correct 19 ms 63832 KB Output is correct
22 Correct 20 ms 65176 KB Output is correct
23 Correct 23 ms 65812 KB Output is correct
24 Correct 23 ms 66580 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 297 ms 131364 KB Output is correct
2 Correct 416 ms 199068 KB Output is correct
3 Correct 540 ms 229724 KB Output is correct
4 Correct 719 ms 331308 KB Output is correct
5 Correct 591 ms 233364 KB Output is correct
6 Correct 1073 ms 435600 KB Output is correct
7 Runtime error 1182 ms 524288 KB Execution killed with signal 9
8 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 62772 KB Output is correct
2 Correct 15 ms 62812 KB Output is correct
3 Correct 15 ms 62972 KB Output is correct
4 Correct 15 ms 62812 KB Output is correct
5 Correct 15 ms 62812 KB Output is correct
6 Correct 16 ms 62820 KB Output is correct
7 Correct 16 ms 63064 KB Output is correct
8 Correct 18 ms 63068 KB Output is correct
9 Correct 16 ms 62808 KB Output is correct
10 Correct 15 ms 62812 KB Output is correct
11 Correct 15 ms 62952 KB Output is correct
12 Correct 16 ms 63064 KB Output is correct
13 Correct 17 ms 63580 KB Output is correct
14 Correct 18 ms 64404 KB Output is correct
15 Correct 20 ms 64788 KB Output is correct
16 Correct 20 ms 66300 KB Output is correct
17 Correct 18 ms 64344 KB Output is correct
18 Correct 21 ms 65688 KB Output is correct
19 Correct 25 ms 67224 KB Output is correct
20 Correct 27 ms 68372 KB Output is correct
21 Correct 19 ms 63832 KB Output is correct
22 Correct 20 ms 65176 KB Output is correct
23 Correct 23 ms 65812 KB Output is correct
24 Correct 23 ms 66580 KB Output is correct
25 Correct 297 ms 131364 KB Output is correct
26 Correct 416 ms 199068 KB Output is correct
27 Correct 540 ms 229724 KB Output is correct
28 Correct 719 ms 331308 KB Output is correct
29 Correct 591 ms 233364 KB Output is correct
30 Correct 1073 ms 435600 KB Output is correct
31 Runtime error 1182 ms 524288 KB Execution killed with signal 9
32 Halted 0 ms 0 KB -