oj.uz

Submission #930134

# Submission time Handle Problem Language Result Execution time Memory
930134 2024-02-18T16:16:52 Z duckindog Klasika (COCI20_klasika) C++14
33 / 110
 1318 ms 524288 KB 
#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 = 30;
  int it;
  vector<vector<int>> nwt;
  vector<int> t;

  void add(int val, int 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) {
      while (nwt.size() <= g) nwt.push_back(vector<int>(2));
      while (t.size() <= it) t.push_back(N);
      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";
//  cerr << 1.0 * clock() / CLOCKS_PER_SEC << "\n";
}

Compilation message

klasika.cpp: In member function 'void trie::add(int, int)':
klasika.cpp:23:27: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   23 |       int bit = (val >> j - 1 & 1);
      |                         ~~^~~
klasika.cpp:25:25: warning: comparison of integer expressions of different signedness: 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   25 |       while (nwt.size() <= g) nwt.push_back(vector<int>(2));
      |              ~~~~~~~~~~~^~~~
klasika.cpp:30:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   30 |       while (t.size() <= it) t.push_back(N);
      |              ~~~~~~~~~^~~~~
klasika.cpp: In member function 'int trie::get(int, int)':
klasika.cpp:38:25: warning: comparison of integer expressions of different signedness: 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |       while (nwt.size() <= g) nwt.push_back(vector<int>(2));
      |              ~~~~~~~~~~~^~~~
klasika.cpp:39:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   39 |       while (t.size() <= it) t.push_back(N);
      |              ~~~~~~~~~^~~~~
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 5 ms 24156 KB Output is correct
2 Correct 5 ms 24004 KB Output is correct
3 Correct 6 ms 24156 KB Output is correct
4 Correct 7 ms 24356 KB Output is correct
5 Correct 5 ms 24156 KB Output is correct
6 Correct 6 ms 24156 KB Output is correct
7 Correct 6 ms 24412 KB Output is correct
8 Correct 6 ms 24620 KB Output is correct
9 Correct 8 ms 24156 KB Output is correct
10 Correct 6 ms 24412 KB Output is correct
11 Correct 6 ms 24408 KB Output is correct
12 Correct 6 ms 24412 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 24156 KB Output is correct
2 Correct 5 ms 24004 KB Output is correct
3 Correct 6 ms 24156 KB Output is correct
4 Correct 7 ms 24356 KB Output is correct
5 Correct 5 ms 24156 KB Output is correct
6 Correct 6 ms 24156 KB Output is correct
7 Correct 6 ms 24412 KB Output is correct
8 Correct 6 ms 24620 KB Output is correct
9 Correct 8 ms 24156 KB Output is correct
10 Correct 6 ms 24412 KB Output is correct
11 Correct 6 ms 24408 KB Output is correct
12 Correct 6 ms 24412 KB Output is correct
13 Correct 9 ms 24920 KB Output is correct
14 Correct 8 ms 25752 KB Output is correct
15 Correct 8 ms 25876 KB Output is correct
16 Correct 9 ms 27156 KB Output is correct
17 Correct 8 ms 25944 KB Output is correct
18 Correct 12 ms 27032 KB Output is correct
19 Correct 12 ms 28328 KB Output is correct
20 Correct 15 ms 29716 KB Output is correct
21 Correct 9 ms 25180 KB Output is correct
22 Correct 10 ms 26496 KB Output is correct
23 Correct 10 ms 27028 KB Output is correct
24 Correct 11 ms 27808 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 244 ms 83516 KB Output is correct
2 Correct 333 ms 138956 KB Output is correct
3 Correct 344 ms 160228 KB Output is correct
4 Correct 386 ms 252440 KB Output is correct
5 Correct 531 ms 191420 KB Output is correct
6 Correct 898 ms 388908 KB Output is correct
7 Correct 1318 ms 524120 KB Output is correct
8 Runtime error 940 ms 524288 KB Execution killed with signal 9
9 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 24156 KB Output is correct
2 Correct 5 ms 24004 KB Output is correct
3 Correct 6 ms 24156 KB Output is correct
4 Correct 7 ms 24356 KB Output is correct
5 Correct 5 ms 24156 KB Output is correct
6 Correct 6 ms 24156 KB Output is correct
7 Correct 6 ms 24412 KB Output is correct
8 Correct 6 ms 24620 KB Output is correct
9 Correct 8 ms 24156 KB Output is correct
10 Correct 6 ms 24412 KB Output is correct
11 Correct 6 ms 24408 KB Output is correct
12 Correct 6 ms 24412 KB Output is correct
13 Correct 9 ms 24920 KB Output is correct
14 Correct 8 ms 25752 KB Output is correct
15 Correct 8 ms 25876 KB Output is correct
16 Correct 9 ms 27156 KB Output is correct
17 Correct 8 ms 25944 KB Output is correct
18 Correct 12 ms 27032 KB Output is correct
19 Correct 12 ms 28328 KB Output is correct
20 Correct 15 ms 29716 KB Output is correct
21 Correct 9 ms 25180 KB Output is correct
22 Correct 10 ms 26496 KB Output is correct
23 Correct 10 ms 27028 KB Output is correct
24 Correct 11 ms 27808 KB Output is correct
25 Correct 244 ms 83516 KB Output is correct
26 Correct 333 ms 138956 KB Output is correct
27 Correct 344 ms 160228 KB Output is correct
28 Correct 386 ms 252440 KB Output is correct
29 Correct 531 ms 191420 KB Output is correct
30 Correct 898 ms 388908 KB Output is correct
31 Correct 1318 ms 524120 KB Output is correct
32 Runtime error 940 ms 524288 KB Execution killed with signal 9
33 Halted 0 ms 0 KB -