oj.uz

Submission #1042361

# Submission time Handle Problem Language Result Execution time Memory
1042361 2024-08-03T01:17:47 Z khanhtb Klasika (COCI20_klasika) C++14
110 / 110
 371 ms 302380 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 = 30;
  int it;
  vector<array<int, 2>> 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(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 = maxBit; j >= 1; --j) {
      while (nwt.size() <= g) nwt.push_back(array<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";
}

Compilation message

klasika.cpp: In member function 'void trie::add(int, int)':
klasika.cpp:26:27: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   26 |       int bit = (val >> j - 1 & 1);
      |                         ~~^~~
klasika.cpp:28:25: warning: comparison of integer expressions of different signedness: 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   28 |       while (nwt.size() <= g) nwt.push_back(array<int, 2>());
      |              ~~~~~~~~~~~^~~~
klasika.cpp:33:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |       while (t.size() <= it) t.push_back(N);
      |              ~~~~~~~~~^~~~~
klasika.cpp: In member function 'int trie::get(int, int)':
klasika.cpp:41:25: warning: comparison of integer expressions of different signedness: 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   41 |       while (nwt.size() <= g) nwt.push_back(array<int, 2>());
      |              ~~~~~~~~~~~^~~~
klasika.cpp:42:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   42 |       while (t.size() <= it) t.push_back(N);
      |              ~~~~~~~~~^~~~~
klasika.cpp:43:27: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   43 |       int bit = (val >> j - 1 & 1);
      |                         ~~^~~
klasika.cpp:46:24: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   46 |         ret |= (1 << j - 1);
      |                      ~~^~~
klasika.cpp: In function 'int32_t main()':
klasika.cpp:99:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   99 |     freopen("duck.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
klasika.cpp:100:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  100 |     freopen("duck.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 23900 KB Output is correct
2 Correct 5 ms 24056 KB Output is correct
3 Correct 6 ms 24156 KB Output is correct
4 Correct 5 ms 24156 KB Output is correct
5 Correct 5 ms 23900 KB Output is correct
6 Correct 5 ms 24156 KB Output is correct
7 Correct 5 ms 24156 KB Output is correct
8 Correct 6 ms 24156 KB Output is correct
9 Correct 6 ms 23900 KB Output is correct
10 Correct 5 ms 24152 KB Output is correct
11 Correct 5 ms 24156 KB Output is correct
12 Correct 6 ms 24156 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 23900 KB Output is correct
2 Correct 5 ms 24056 KB Output is correct
3 Correct 6 ms 24156 KB Output is correct
4 Correct 5 ms 24156 KB Output is correct
5 Correct 5 ms 23900 KB Output is correct
6 Correct 5 ms 24156 KB Output is correct
7 Correct 5 ms 24156 KB Output is correct
8 Correct 6 ms 24156 KB Output is correct
9 Correct 6 ms 23900 KB Output is correct
10 Correct 5 ms 24152 KB Output is correct
11 Correct 5 ms 24156 KB Output is correct
12 Correct 6 ms 24156 KB Output is correct
13 Correct 6 ms 24408 KB Output is correct
14 Correct 6 ms 24668 KB Output is correct
15 Correct 6 ms 24924 KB Output is correct
16 Correct 6 ms 25224 KB Output is correct
17 Correct 6 ms 24668 KB Output is correct
18 Correct 7 ms 25180 KB Output is correct
19 Correct 7 ms 25840 KB Output is correct
20 Correct 11 ms 26072 KB Output is correct
21 Correct 6 ms 24592 KB Output is correct
22 Correct 6 ms 24924 KB Output is correct
23 Correct 7 ms 25276 KB Output is correct
24 Correct 7 ms 25372 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 89 ms 54788 KB Output is correct
2 Correct 117 ms 72768 KB Output is correct
3 Correct 115 ms 86912 KB Output is correct
4 Correct 125 ms 117244 KB Output is correct
5 Correct 138 ms 93352 KB Output is correct
6 Correct 210 ms 164096 KB Output is correct
7 Correct 324 ms 220836 KB Output is correct
8 Correct 368 ms 300704 KB Output is correct
9 Correct 106 ms 62924 KB Output is correct
10 Correct 143 ms 96624 KB Output is correct
11 Correct 167 ms 124828 KB Output is correct
12 Correct 221 ms 166364 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 23900 KB Output is correct
2 Correct 5 ms 24056 KB Output is correct
3 Correct 6 ms 24156 KB Output is correct
4 Correct 5 ms 24156 KB Output is correct
5 Correct 5 ms 23900 KB Output is correct
6 Correct 5 ms 24156 KB Output is correct
7 Correct 5 ms 24156 KB Output is correct
8 Correct 6 ms 24156 KB Output is correct
9 Correct 6 ms 23900 KB Output is correct
10 Correct 5 ms 24152 KB Output is correct
11 Correct 5 ms 24156 KB Output is correct
12 Correct 6 ms 24156 KB Output is correct
13 Correct 6 ms 24408 KB Output is correct
14 Correct 6 ms 24668 KB Output is correct
15 Correct 6 ms 24924 KB Output is correct
16 Correct 6 ms 25224 KB Output is correct
17 Correct 6 ms 24668 KB Output is correct
18 Correct 7 ms 25180 KB Output is correct
19 Correct 7 ms 25840 KB Output is correct
20 Correct 11 ms 26072 KB Output is correct
21 Correct 6 ms 24592 KB Output is correct
22 Correct 6 ms 24924 KB Output is correct
23 Correct 7 ms 25276 KB Output is correct
24 Correct 7 ms 25372 KB Output is correct
25 Correct 89 ms 54788 KB Output is correct
26 Correct 117 ms 72768 KB Output is correct
27 Correct 115 ms 86912 KB Output is correct
28 Correct 125 ms 117244 KB Output is correct
29 Correct 138 ms 93352 KB Output is correct
30 Correct 210 ms 164096 KB Output is correct
31 Correct 324 ms 220836 KB Output is correct
32 Correct 368 ms 300704 KB Output is correct
33 Correct 106 ms 62924 KB Output is correct
34 Correct 143 ms 96624 KB Output is correct
35 Correct 167 ms 124828 KB Output is correct
36 Correct 221 ms 166364 KB Output is correct
37 Correct 119 ms 52652 KB Output is correct
38 Correct 122 ms 75160 KB Output is correct
39 Correct 126 ms 87972 KB Output is correct
40 Correct 140 ms 118068 KB Output is correct
41 Correct 151 ms 98736 KB Output is correct
42 Correct 232 ms 170288 KB Output is correct
43 Correct 283 ms 216756 KB Output is correct
44 Correct 371 ms 302380 KB Output is correct
45 Correct 119 ms 67012 KB Output is correct
46 Correct 161 ms 99848 KB Output is correct
47 Correct 185 ms 126940 KB Output is correct
48 Correct 214 ms 167940 KB Output is correct