oj.uz

Submission #930200

# Submission time Handle Problem Language Result Execution time Memory
930200 2024-02-19T00:50:03 Z duckindog Klasika (COCI20_klasika) C++14
110 / 110
 530 ms 297684 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 it;
  vector<array<int, 2>> nwt;
  vector<int> t;

  void add(int val, int time) {
    int g = 0;
    for (int j = 30; j >= 1; --j) {
      int bit = (val >> j - 1 & 1);

      while (nwt.size() <= g) nwt.push_back(array<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 = 30; 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;
  }

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

} node[N];

vector<pii> ad[N];
int d[N], t[N];
int answer[N];

int it;
int st[N], ed[N], mask[N];

void dfs(int u, int pre = 0) {
  mask[st[u] = ++it] = u;
  int best = 0;
  for (const auto& duck : ad[u]) {
    int v, w; tie(v, w) = duck;
    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& duck : ad[u]) {
    int v, w; tie(v, w) = duck;
    if (v == pre || v == best) continue;

    for (int i = st[v]; i <= ed[v]; ++i) node[u].add(d[mask[i]], t[mask[i]]);
    node[v].clear();
  }
  node[u].add(d[u], t[u]);
  for (const auto& duck : Q[u]) {
    int a = duck.a, time = duck.t;
    answer[time] = node[u].get(d[a], time);
  }

  ed[u] = it;
}

int32_t main() {
  cin.tie(0)->sync_with_stdio(0);

  if (fopen("klasika.in.3g", "r")) {
    freopen("duck.inp", "r", stdin);
    freopen("duck.out", "w", stdout);
  }

  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:25:27: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   25 |       int bit = (val >> j - 1 & 1);
      |                         ~~^~~
klasika.cpp:27:25: warning: comparison of integer expressions of different signedness: 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   27 |       while (nwt.size() <= g) nwt.push_back(array<int, 2>());
      |              ~~~~~~~~~~~^~~~
klasika.cpp:32:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   32 |       while (t.size() <= it) t.push_back(N);
      |              ~~~~~~~~~^~~~~
klasika.cpp: In member function 'int trie::get(int, int)':
klasika.cpp:40:27: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   40 |       int bit = (val >> j - 1 & 1);
      |                         ~~^~~
klasika.cpp:43:24: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   43 |         ret |= (1 << j - 1);
      |                      ~~^~~
klasika.cpp: In function 'int32_t main()':
klasika.cpp:96:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   96 |     freopen("duck.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
klasika.cpp:97:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |     freopen("duck.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 21848 KB Output is correct
2 Correct 10 ms 21596 KB Output is correct
3 Correct 10 ms 21596 KB Output is correct
4 Correct 10 ms 21596 KB Output is correct
5 Correct 10 ms 21596 KB Output is correct
6 Correct 10 ms 21596 KB Output is correct
7 Correct 10 ms 21596 KB Output is correct
8 Correct 10 ms 21596 KB Output is correct
9 Correct 10 ms 21664 KB Output is correct
10 Correct 11 ms 21808 KB Output is correct
11 Correct 10 ms 21684 KB Output is correct
12 Correct 11 ms 21608 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 21848 KB Output is correct
2 Correct 10 ms 21596 KB Output is correct
3 Correct 10 ms 21596 KB Output is correct
4 Correct 10 ms 21596 KB Output is correct
5 Correct 10 ms 21596 KB Output is correct
6 Correct 10 ms 21596 KB Output is correct
7 Correct 10 ms 21596 KB Output is correct
8 Correct 10 ms 21596 KB Output is correct
9 Correct 10 ms 21664 KB Output is correct
10 Correct 11 ms 21808 KB Output is correct
11 Correct 10 ms 21684 KB Output is correct
12 Correct 11 ms 21608 KB Output is correct
13 Correct 11 ms 21864 KB Output is correct
14 Correct 12 ms 22292 KB Output is correct
15 Correct 14 ms 22468 KB Output is correct
16 Correct 13 ms 22676 KB Output is correct
17 Correct 12 ms 22120 KB Output is correct
18 Correct 13 ms 22876 KB Output is correct
19 Correct 14 ms 23400 KB Output is correct
20 Correct 15 ms 23780 KB Output is correct
21 Correct 14 ms 22120 KB Output is correct
22 Correct 13 ms 22364 KB Output is correct
23 Correct 12 ms 22744 KB Output is correct
24 Correct 12 ms 22876 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 49300 KB Output is correct
2 Correct 156 ms 66544 KB Output is correct
3 Correct 153 ms 76976 KB Output is correct
4 Correct 192 ms 108004 KB Output is correct
5 Correct 191 ms 88812 KB Output is correct
6 Correct 287 ms 158936 KB Output is correct
7 Correct 372 ms 217992 KB Output is correct
8 Correct 530 ms 295864 KB Output is correct
9 Correct 139 ms 59556 KB Output is correct
10 Correct 205 ms 93836 KB Output is correct
11 Correct 229 ms 121644 KB Output is correct
12 Correct 294 ms 163936 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 21848 KB Output is correct
2 Correct 10 ms 21596 KB Output is correct
3 Correct 10 ms 21596 KB Output is correct
4 Correct 10 ms 21596 KB Output is correct
5 Correct 10 ms 21596 KB Output is correct
6 Correct 10 ms 21596 KB Output is correct
7 Correct 10 ms 21596 KB Output is correct
8 Correct 10 ms 21596 KB Output is correct
9 Correct 10 ms 21664 KB Output is correct
10 Correct 11 ms 21808 KB Output is correct
11 Correct 10 ms 21684 KB Output is correct
12 Correct 11 ms 21608 KB Output is correct
13 Correct 11 ms 21864 KB Output is correct
14 Correct 12 ms 22292 KB Output is correct
15 Correct 14 ms 22468 KB Output is correct
16 Correct 13 ms 22676 KB Output is correct
17 Correct 12 ms 22120 KB Output is correct
18 Correct 13 ms 22876 KB Output is correct
19 Correct 14 ms 23400 KB Output is correct
20 Correct 15 ms 23780 KB Output is correct
21 Correct 14 ms 22120 KB Output is correct
22 Correct 13 ms 22364 KB Output is correct
23 Correct 12 ms 22744 KB Output is correct
24 Correct 12 ms 22876 KB Output is correct
25 Correct 115 ms 49300 KB Output is correct
26 Correct 156 ms 66544 KB Output is correct
27 Correct 153 ms 76976 KB Output is correct
28 Correct 192 ms 108004 KB Output is correct
29 Correct 191 ms 88812 KB Output is correct
30 Correct 287 ms 158936 KB Output is correct
31 Correct 372 ms 217992 KB Output is correct
32 Correct 530 ms 295864 KB Output is correct
33 Correct 139 ms 59556 KB Output is correct
34 Correct 205 ms 93836 KB Output is correct
35 Correct 229 ms 121644 KB Output is correct
36 Correct 294 ms 163936 KB Output is correct
37 Correct 135 ms 47776 KB Output is correct
38 Correct 200 ms 68084 KB Output is correct
39 Correct 184 ms 78724 KB Output is correct
40 Correct 196 ms 108112 KB Output is correct
41 Correct 196 ms 92680 KB Output is correct
42 Correct 307 ms 164908 KB Output is correct
43 Correct 406 ms 213720 KB Output is correct
44 Correct 518 ms 297684 KB Output is correct
45 Correct 156 ms 60928 KB Output is correct
46 Correct 223 ms 94988 KB Output is correct
47 Correct 243 ms 122348 KB Output is correct
48 Correct 324 ms 164764 KB Output is correct