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답안 #951665

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
951665 2024-03-22T09:19:18 Z nguyennh Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++14
100 / 100
 974 ms 186196 KB 
#include<bits/stdc++.h>
#define el '\n'
using namespace std ;

mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());

const int MN = 1e6 + 5;
const int N = 2e5 + 5;

const int inf = 2e9;

int n , m , a[MN];

namespace sub_trau{
  bool valid_input(){
    return n <= 500 && m <= 500;
  }
  
  void solve(){
    while(m--){
      int l , r , k;
      cin >> l >> r >> k;
      int ans = 0;
      for ( int i = l ; i <= r ; i++ ){
        for ( int j = i ; j <= r ; j++ ){
          if (a[j] < a[i]) ans = max(ans , a[j] + a[i]);
        }
      }
      cout << (ans <= k ? 1 : 0) << el;
    }
  }
}

namespace sub2{
  bool valid_input(){
    return n <= 5000 && m <= 5000;
  }
  
  void solve(){
    while(m--){
      int l , r , k;
      cin >> l >> r >> k;
      int ans = 0;
      vector<int> pref(r + 3);
      pref[l - 1] = INT_MIN;
      pref[l] = a[l];
      for ( int i = l + 1 ; i <= r ; i++ ) pref[i] = max(pref[i - 1] , a[i]);
      for ( int i = l ; i <= r ; i++ ){
        if (pref[i - 1] > a[i]) ans = max(ans , a[i] + pref[i - 1]);
      }
      cout << (ans <= k ? 1 : 0) << el;
    }
  }
}

namespace memory_dak{
  bool valid_input(){
    return n <= (int)2e5 && m <= (int)2e5;
  }
  
  struct merge_sort_tree{
    #define lt(x) (x << 1)
    #define rt(x) (x << 1 | 1)
    vector<int> st[4 * MN];
    
    void build(int id , int l , int r){
      if (l == r){
        st[id].push_back(a[l]);
        return;
      }
      int mid = l + r >> 1;
      build(id << 1 , l , mid);
      build(id << 1 | 1 , mid + 1 , r);
      merge(st[lt(id)].begin() , st[lt(id)].end() , st[rt(id)].begin() , st[rt(id)].end() , back_inserter(st[id]));
    }
    
    int get(int id , int l , int r , int tl , int tr , int x){
      if (l > tr || r < tl) return -inf;
      else if (l >= tl && r <= tr){
        auto it = lower_bound(st[id].begin() , st[id].end() , x) - st[id].begin() - 1;
        if (it >= 0) return st[id][it];
        else return -inf;
      }
      int mid = l + r >> 1;
      return max(get(id << 1 , l , mid , tl , tr , x) , get(id << 1 | 1 , mid + 1 , r , tl , tr , x));
    }
  } mt;
  
  struct Segtri{
    struct Node{
      int l , r , best , max_val;
    };
    
    Node merge(const Node &x , const Node &y){
      Node c;
      c.l = x.l;
      c.r = y.r;
      c.max_val = max(x.max_val , y.max_val);
      c.best = max(x.best , y.best);
      int cur = mt.get(1 , 1 , n , y.l , y.r , x.max_val);
      c.best = max(c.best , x.max_val + cur);
      return c;
    }
    
    Node st[4 * N];
    
    void build(int id , int l , int r){
      if (l == r){
        st[id] = {l , l , 0 , a[l]};
        return;
      }
      int mid = l + r >> 1;
      build(id << 1 , l , mid);
      build(id << 1 | 1 , mid + 1 , r);
      st[id] = merge(st[id << 1] , st[id << 1 | 1]);
    }
    
    Node get(int id , int l , int r , int tl , int tr){
      if (l >= tl && r <= tr) return st[id];
      else {
        int mid = l + r >> 1;
        if (tl > mid) return get(id << 1 | 1 , mid + 1 , r , tl , tr);
        else if (tr <= mid) return get(id << 1 , l , mid , tl , tr);
        else return merge(get(id << 1 , l , mid , tl , tr) , get(id << 1 | 1 , mid + 1 , r , tl , tr));
      }
    }
  };
  
  void solve(){
    mt.build(1 , 1 , n);
    Segtri it;
    it.build(1 , 1 , n);
    while(m--){
      int l , r , k;
      cin >> l >> r >> k;
      cout << (it.get(1 , 1 , n , l , r).best <= k ? 1 : 0) << el;
    }
  }
}

namespace sub_final{
  vector<tuple<int , int , int>> queries[MN];
  
  struct fenwick{
    int bit[MN];
    
    void update(int p , int v){
      for ( ; p ; p -= p & -p ){
        bit[p] = max(bit[p] , v);
      }
    }
    
    int get(int x){
      int res = 0;
      for ( ; x <= n ; x += x & -x ){
        res = max(res , bit[x]);
      }
      return res;
    }
  } fw;
  
  void solve(){
    stack<int> st;
    for ( int i = 1 ; i <= m ; i++ ){
      int l , r , k;
      cin >> l >> r >> k;
      queries[r].push_back(make_tuple(l , k , i));
    }
    a[0] = inf;
    st.push(0);
    vector<int> ans(m + 5);
    for ( int i = 1 ; i <= n ; i++ ){
      while (!st.empty() && a[st.top()] <= a[i]) st.pop();
      if (st.top()) fw.update(st.top() , a[st.top()] + a[i]);
      st.push(i);
      for ( auto [l , k , id] : queries[i] ){
        ans[id] = fw.get(l) <= k;
      } 
    }
    for ( int i = 1 ; i <= m ; i++ ) cout << ans[i] << el;
  }
}

int32_t main (){
//  freopen("sortbook.inp" , "r" , stdin);
//  freopen("sortbook.out" , "w" , stdout);
  ios_base::sync_with_stdio(0); 
  cin.tie(0);
  cin >> n >> m;
  for ( int i = 1 ; i <= n ; i++ ) cin >> a[i];
  if (sub_trau::valid_input()){
    sub_trau::solve();
    return 0;
  }
  if (sub2::valid_input()){
    sub2::solve();
    return 0;
  }
  if (memory_dak::valid_input()){
    memory_dak::solve();
    return 0;
  }
  sub_final::solve();
}

Compilation message

sortbooks.cpp: In member function 'void memory_dak::merge_sort_tree::build(int, int, int)':
sortbooks.cpp:71:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   71 |       int mid = l + r >> 1;
      |                 ~~^~~
sortbooks.cpp: In member function 'int memory_dak::merge_sort_tree::get(int, int, int, int, int, int)':
sortbooks.cpp:84:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   84 |       int mid = l + r >> 1;
      |                 ~~^~~
sortbooks.cpp: In member function 'void memory_dak::Segtri::build(int, int, int)':
sortbooks.cpp:112:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  112 |       int mid = l + r >> 1;
      |                 ~~^~~
sortbooks.cpp: In member function 'memory_dak::Segtri::Node memory_dak::Segtri::get(int, int, int, int, int)':
sortbooks.cpp:121:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  121 |         int mid = l + r >> 1;
      |                   ~~^~~
sortbooks.cpp: In function 'void sub_final::solve()':
sortbooks.cpp:176:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  176 |       for ( auto [l , k , id] : queries[i] ){
      |                  ^

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 121724 KB Output is correct
2 Correct 30 ms 121436 KB Output is correct
3 Correct 32 ms 121436 KB Output is correct
4 Correct 30 ms 121340 KB Output is correct
5 Correct 30 ms 121436 KB Output is correct
6 Correct 51 ms 121528 KB Output is correct
7 Correct 51 ms 121688 KB Output is correct
8 Correct 56 ms 121432 KB Output is correct
9 Correct 36 ms 121432 KB Output is correct
10 Correct 52 ms 121436 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 121724 KB Output is correct
2 Correct 30 ms 121436 KB Output is correct
3 Correct 32 ms 121436 KB Output is correct
4 Correct 30 ms 121340 KB Output is correct
5 Correct 30 ms 121436 KB Output is correct
6 Correct 51 ms 121528 KB Output is correct
7 Correct 51 ms 121688 KB Output is correct
8 Correct 56 ms 121432 KB Output is correct
9 Correct 36 ms 121432 KB Output is correct
10 Correct 52 ms 121436 KB Output is correct
11 Correct 36 ms 121436 KB Output is correct
12 Correct 48 ms 121648 KB Output is correct
13 Correct 50 ms 121544 KB Output is correct
14 Correct 65 ms 121700 KB Output is correct
15 Correct 65 ms 121688 KB Output is correct
16 Correct 93 ms 121640 KB Output is correct
17 Correct 80 ms 121432 KB Output is correct
18 Correct 96 ms 121436 KB Output is correct

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 683 ms 185160 KB Output is correct
2 Correct 718 ms 186192 KB Output is correct
3 Correct 711 ms 185868 KB Output is correct
4 Correct 718 ms 186072 KB Output is correct
5 Correct 660 ms 183888 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 373 ms 149344 KB Output is correct
2 Correct 395 ms 149676 KB Output is correct
3 Correct 376 ms 149196 KB Output is correct
4 Correct 405 ms 149564 KB Output is correct
5 Correct 342 ms 149192 KB Output is correct
6 Correct 362 ms 149296 KB Output is correct
7 Correct 352 ms 149280 KB Output is correct
8 Correct 275 ms 148976 KB Output is correct
9 Correct 82 ms 135608 KB Output is correct
10 Correct 275 ms 148952 KB Output is correct

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 121724 KB Output is correct
2 Correct 30 ms 121436 KB Output is correct
3 Correct 32 ms 121436 KB Output is correct
4 Correct 30 ms 121340 KB Output is correct
5 Correct 30 ms 121436 KB Output is correct
6 Correct 51 ms 121528 KB Output is correct
7 Correct 51 ms 121688 KB Output is correct
8 Correct 56 ms 121432 KB Output is correct
9 Correct 36 ms 121432 KB Output is correct
10 Correct 52 ms 121436 KB Output is correct
11 Correct 36 ms 121436 KB Output is correct
12 Correct 48 ms 121648 KB Output is correct
13 Correct 50 ms 121544 KB Output is correct
14 Correct 65 ms 121700 KB Output is correct
15 Correct 65 ms 121688 KB Output is correct
16 Correct 93 ms 121640 KB Output is correct
17 Correct 80 ms 121432 KB Output is correct
18 Correct 96 ms 121436 KB Output is correct
19 Correct 914 ms 168108 KB Output is correct
20 Correct 974 ms 168064 KB Output is correct
21 Correct 880 ms 167980 KB Output is correct
22 Correct 906 ms 167992 KB Output is correct
23 Correct 867 ms 167880 KB Output is correct
24 Correct 753 ms 167884 KB Output is correct
25 Correct 765 ms 167836 KB Output is correct
26 Correct 851 ms 168248 KB Output is correct
27 Correct 838 ms 168504 KB Output is correct
28 Correct 890 ms 168112 KB Output is correct
29 Correct 838 ms 168156 KB Output is correct
30 Correct 840 ms 168000 KB Output is correct
31 Correct 849 ms 168100 KB Output is correct
32 Correct 867 ms 168132 KB Output is correct
33 Correct 866 ms 168160 KB Output is correct
34 Correct 753 ms 167792 KB Output is correct
35 Correct 754 ms 167712 KB Output is correct
36 Correct 758 ms 167616 KB Output is correct
37 Correct 755 ms 167488 KB Output is correct
38 Correct 776 ms 167744 KB Output is correct
39 Correct 699 ms 166596 KB Output is correct
40 Correct 425 ms 154860 KB Output is correct
41 Correct 645 ms 166340 KB Output is correct

Subtask #6
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 121724 KB Output is correct
2 Correct 30 ms 121436 KB Output is correct
3 Correct 32 ms 121436 KB Output is correct
4 Correct 30 ms 121340 KB Output is correct
5 Correct 30 ms 121436 KB Output is correct
6 Correct 51 ms 121528 KB Output is correct
7 Correct 51 ms 121688 KB Output is correct
8 Correct 56 ms 121432 KB Output is correct
9 Correct 36 ms 121432 KB Output is correct
10 Correct 52 ms 121436 KB Output is correct
11 Correct 36 ms 121436 KB Output is correct
12 Correct 48 ms 121648 KB Output is correct
13 Correct 50 ms 121544 KB Output is correct
14 Correct 65 ms 121700 KB Output is correct
15 Correct 65 ms 121688 KB Output is correct
16 Correct 93 ms 121640 KB Output is correct
17 Correct 80 ms 121432 KB Output is correct
18 Correct 96 ms 121436 KB Output is correct
19 Correct 683 ms 185160 KB Output is correct
20 Correct 718 ms 186192 KB Output is correct
21 Correct 711 ms 185868 KB Output is correct
22 Correct 718 ms 186072 KB Output is correct
23 Correct 660 ms 183888 KB Output is correct
24 Correct 373 ms 149344 KB Output is correct
25 Correct 395 ms 149676 KB Output is correct
26 Correct 376 ms 149196 KB Output is correct
27 Correct 405 ms 149564 KB Output is correct
28 Correct 342 ms 149192 KB Output is correct
29 Correct 362 ms 149296 KB Output is correct
30 Correct 352 ms 149280 KB Output is correct
31 Correct 275 ms 148976 KB Output is correct
32 Correct 82 ms 135608 KB Output is correct
33 Correct 275 ms 148952 KB Output is correct
34 Correct 914 ms 168108 KB Output is correct
35 Correct 974 ms 168064 KB Output is correct
36 Correct 880 ms 167980 KB Output is correct
37 Correct 906 ms 167992 KB Output is correct
38 Correct 867 ms 167880 KB Output is correct
39 Correct 753 ms 167884 KB Output is correct
40 Correct 765 ms 167836 KB Output is correct
41 Correct 851 ms 168248 KB Output is correct
42 Correct 838 ms 168504 KB Output is correct
43 Correct 890 ms 168112 KB Output is correct
44 Correct 838 ms 168156 KB Output is correct
45 Correct 840 ms 168000 KB Output is correct
46 Correct 849 ms 168100 KB Output is correct
47 Correct 867 ms 168132 KB Output is correct
48 Correct 866 ms 168160 KB Output is correct
49 Correct 753 ms 167792 KB Output is correct
50 Correct 754 ms 167712 KB Output is correct
51 Correct 758 ms 167616 KB Output is correct
52 Correct 755 ms 167488 KB Output is correct
53 Correct 776 ms 167744 KB Output is correct
54 Correct 699 ms 166596 KB Output is correct
55 Correct 425 ms 154860 KB Output is correct
56 Correct 645 ms 166340 KB Output is correct
57 Correct 667 ms 186196 KB Output is correct
58 Correct 642 ms 186196 KB Output is correct
59 Correct 626 ms 184992 KB Output is correct
60 Correct 638 ms 185108 KB Output is correct
61 Correct 645 ms 184776 KB Output is correct
62 Correct 638 ms 184368 KB Output is correct
63 Correct 432 ms 179440 KB Output is correct
64 Correct 411 ms 179284 KB Output is correct
65 Correct 547 ms 182352 KB Output is correct
66 Correct 553 ms 182256 KB Output is correct
67 Correct 597 ms 182364 KB Output is correct
68 Correct 630 ms 184132 KB Output is correct
69 Correct 644 ms 184004 KB Output is correct
70 Correct 695 ms 183460 KB Output is correct
71 Correct 704 ms 183840 KB Output is correct
72 Correct 659 ms 183680 KB Output is correct
73 Correct 389 ms 175184 KB Output is correct
74 Correct 386 ms 176504 KB Output is correct
75 Correct 386 ms 175488 KB Output is correct
76 Correct 378 ms 175324 KB Output is correct
77 Correct 375 ms 175136 KB Output is correct
78 Correct 555 ms 177068 KB Output is correct
79 Correct 466 ms 167148 KB Output is correct
80 Correct 522 ms 173304 KB Output is correct