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Submission #930118

# Submission time Handle Problem Language Result Execution time Memory
930118 2024-02-18T15:17:16 Z duckindog Klasika (COCI20_klasika) C++14
33 / 110
 1199 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 = 2e5 + 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);
      
      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: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 13 ms 40540 KB Output is correct
2 Correct 11 ms 40540 KB Output is correct
3 Correct 10 ms 40752 KB Output is correct
4 Correct 10 ms 40660 KB Output is correct
5 Correct 10 ms 40540 KB Output is correct
6 Correct 11 ms 40540 KB Output is correct
7 Correct 11 ms 40796 KB Output is correct
8 Correct 11 ms 41052 KB Output is correct
9 Correct 10 ms 40688 KB Output is correct
10 Correct 11 ms 40660 KB Output is correct
11 Correct 13 ms 40796 KB Output is correct
12 Correct 12 ms 40796 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 40540 KB Output is correct
2 Correct 11 ms 40540 KB Output is correct
3 Correct 10 ms 40752 KB Output is correct
4 Correct 10 ms 40660 KB Output is correct
5 Correct 10 ms 40540 KB Output is correct
6 Correct 11 ms 40540 KB Output is correct
7 Correct 11 ms 40796 KB Output is correct
8 Correct 11 ms 41052 KB Output is correct
9 Correct 10 ms 40688 KB Output is correct
10 Correct 11 ms 40660 KB Output is correct
11 Correct 13 ms 40796 KB Output is correct
12 Correct 12 ms 40796 KB Output is correct
13 Correct 12 ms 41360 KB Output is correct
14 Correct 13 ms 42392 KB Output is correct
15 Correct 13 ms 42772 KB Output is correct
16 Correct 15 ms 44308 KB Output is correct
17 Correct 16 ms 42056 KB Output is correct
18 Correct 16 ms 43672 KB Output is correct
19 Correct 20 ms 45076 KB Output is correct
20 Correct 23 ms 46348 KB Output is correct
21 Correct 13 ms 41820 KB Output is correct
22 Correct 16 ms 42900 KB Output is correct
23 Correct 17 ms 43720 KB Output is correct
24 Correct 19 ms 44560 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 303 ms 112424 KB Output is correct
2 Correct 439 ms 181148 KB Output is correct
3 Correct 579 ms 212892 KB Output is correct
4 Correct 696 ms 316004 KB Output is correct
5 Correct 587 ms 214324 KB Output is correct
6 Correct 1167 ms 413216 KB Output is correct
7 Runtime error 1199 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 13 ms 40540 KB Output is correct
2 Correct 11 ms 40540 KB Output is correct
3 Correct 10 ms 40752 KB Output is correct
4 Correct 10 ms 40660 KB Output is correct
5 Correct 10 ms 40540 KB Output is correct
6 Correct 11 ms 40540 KB Output is correct
7 Correct 11 ms 40796 KB Output is correct
8 Correct 11 ms 41052 KB Output is correct
9 Correct 10 ms 40688 KB Output is correct
10 Correct 11 ms 40660 KB Output is correct
11 Correct 13 ms 40796 KB Output is correct
12 Correct 12 ms 40796 KB Output is correct
13 Correct 12 ms 41360 KB Output is correct
14 Correct 13 ms 42392 KB Output is correct
15 Correct 13 ms 42772 KB Output is correct
16 Correct 15 ms 44308 KB Output is correct
17 Correct 16 ms 42056 KB Output is correct
18 Correct 16 ms 43672 KB Output is correct
19 Correct 20 ms 45076 KB Output is correct
20 Correct 23 ms 46348 KB Output is correct
21 Correct 13 ms 41820 KB Output is correct
22 Correct 16 ms 42900 KB Output is correct
23 Correct 17 ms 43720 KB Output is correct
24 Correct 19 ms 44560 KB Output is correct
25 Correct 303 ms 112424 KB Output is correct
26 Correct 439 ms 181148 KB Output is correct
27 Correct 579 ms 212892 KB Output is correct
28 Correct 696 ms 316004 KB Output is correct
29 Correct 587 ms 214324 KB Output is correct
30 Correct 1167 ms 413216 KB Output is correct
31 Runtime error 1199 ms 524288 KB Execution killed with signal 9
32 Halted 0 ms 0 KB -