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답안 #951381

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
951381 2024-03-21T19:02:31 Z nguyennh Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++14
64 / 100
 930 ms 262144 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 inf = numeric_limits<int>::max();

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 sub_final{
  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[3 * MN];
    
    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;
    }
  }
}

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;
  }
  sub_final::solve();
}

Compilation message

sortbooks.cpp: In member function 'void sub_final::merge_sort_tree::build(int, int, int)':
sortbooks.cpp:66:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   66 |       int mid = l + r >> 1;
      |                 ~~^~~
sortbooks.cpp: In member function 'int sub_final::merge_sort_tree::get(int, int, int, int, int, int)':
sortbooks.cpp:79:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   79 |       int mid = l + r >> 1;
      |                 ~~^~~
sortbooks.cpp: In member function 'void sub_final::Segtri::build(int, int, int)':
sortbooks.cpp:107:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  107 |       int mid = l + r >> 1;
      |                 ~~^~~
sortbooks.cpp: In member function 'sub_final::Segtri::Node sub_final::Segtri::get(int, int, int, int, int)':
sortbooks.cpp:116:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  116 |         int mid = l + r >> 1;
      |                   ~~^~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 94808 KB Output is correct
2 Correct 23 ms 94808 KB Output is correct
3 Correct 25 ms 94812 KB Output is correct
4 Correct 22 ms 94808 KB Output is correct
5 Correct 22 ms 94808 KB Output is correct
6 Correct 40 ms 94812 KB Output is correct
7 Correct 41 ms 94812 KB Output is correct
8 Correct 39 ms 94936 KB Output is correct
9 Correct 26 ms 94812 KB Output is correct
10 Correct 36 ms 94812 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 94808 KB Output is correct
2 Correct 23 ms 94808 KB Output is correct
3 Correct 25 ms 94812 KB Output is correct
4 Correct 22 ms 94808 KB Output is correct
5 Correct 22 ms 94808 KB Output is correct
6 Correct 40 ms 94812 KB Output is correct
7 Correct 41 ms 94812 KB Output is correct
8 Correct 39 ms 94936 KB Output is correct
9 Correct 26 ms 94812 KB Output is correct
10 Correct 36 ms 94812 KB Output is correct
11 Correct 28 ms 94808 KB Output is correct
12 Correct 40 ms 94812 KB Output is correct
13 Correct 42 ms 94812 KB Output is correct
14 Correct 57 ms 95056 KB Output is correct
15 Correct 58 ms 95044 KB Output is correct
16 Correct 86 ms 95036 KB Output is correct
17 Correct 72 ms 95060 KB Output is correct
18 Correct 87 ms 95292 KB Output is correct

Subtask #3
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 335 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 388 ms 155348 KB Output is correct
2 Correct 411 ms 155596 KB Output is correct
3 Correct 378 ms 155340 KB Output is correct
4 Correct 377 ms 155520 KB Output is correct
5 Correct 360 ms 155340 KB Output is correct
6 Correct 386 ms 155212 KB Output is correct
7 Correct 375 ms 155336 KB Output is correct
8 Correct 294 ms 155716 KB Output is correct
9 Correct 90 ms 142036 KB Output is correct
10 Correct 287 ms 155316 KB Output is correct

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 94808 KB Output is correct
2 Correct 23 ms 94808 KB Output is correct
3 Correct 25 ms 94812 KB Output is correct
4 Correct 22 ms 94808 KB Output is correct
5 Correct 22 ms 94808 KB Output is correct
6 Correct 40 ms 94812 KB Output is correct
7 Correct 41 ms 94812 KB Output is correct
8 Correct 39 ms 94936 KB Output is correct
9 Correct 26 ms 94812 KB Output is correct
10 Correct 36 ms 94812 KB Output is correct
11 Correct 28 ms 94808 KB Output is correct
12 Correct 40 ms 94812 KB Output is correct
13 Correct 42 ms 94812 KB Output is correct
14 Correct 57 ms 95056 KB Output is correct
15 Correct 58 ms 95044 KB Output is correct
16 Correct 86 ms 95036 KB Output is correct
17 Correct 72 ms 95060 KB Output is correct
18 Correct 87 ms 95292 KB Output is correct
19 Correct 914 ms 171616 KB Output is correct
20 Correct 930 ms 171732 KB Output is correct
21 Correct 835 ms 171632 KB Output is correct
22 Correct 835 ms 171468 KB Output is correct
23 Correct 838 ms 171716 KB Output is correct
24 Correct 796 ms 171432 KB Output is correct
25 Correct 798 ms 171616 KB Output is correct
26 Correct 867 ms 171640 KB Output is correct
27 Correct 850 ms 171732 KB Output is correct
28 Correct 908 ms 171820 KB Output is correct
29 Correct 853 ms 171560 KB Output is correct
30 Correct 850 ms 171784 KB Output is correct
31 Correct 878 ms 171996 KB Output is correct
32 Correct 901 ms 171584 KB Output is correct
33 Correct 911 ms 171636 KB Output is correct
34 Correct 803 ms 171616 KB Output is correct
35 Correct 793 ms 171668 KB Output is correct
36 Correct 811 ms 171508 KB Output is correct
37 Correct 793 ms 171464 KB Output is correct
38 Correct 807 ms 171564 KB Output is correct
39 Correct 750 ms 171496 KB Output is correct
40 Correct 465 ms 158072 KB Output is correct
41 Correct 728 ms 171608 KB Output is correct

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 94808 KB Output is correct
2 Correct 23 ms 94808 KB Output is correct
3 Correct 25 ms 94812 KB Output is correct
4 Correct 22 ms 94808 KB Output is correct
5 Correct 22 ms 94808 KB Output is correct
6 Correct 40 ms 94812 KB Output is correct
7 Correct 41 ms 94812 KB Output is correct
8 Correct 39 ms 94936 KB Output is correct
9 Correct 26 ms 94812 KB Output is correct
10 Correct 36 ms 94812 KB Output is correct
11 Correct 28 ms 94808 KB Output is correct
12 Correct 40 ms 94812 KB Output is correct
13 Correct 42 ms 94812 KB Output is correct
14 Correct 57 ms 95056 KB Output is correct
15 Correct 58 ms 95044 KB Output is correct
16 Correct 86 ms 95036 KB Output is correct
17 Correct 72 ms 95060 KB Output is correct
18 Correct 87 ms 95292 KB Output is correct
19 Runtime error 335 ms 262144 KB Execution killed with signal 9
20 Halted 0 ms 0 KB -