oj.uz

Submission #898128

# Submission time Handle Problem Language Result Execution time Memory
898128 2024-01-04T10:45:42 Z vjudge1 Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++17
30 / 100
 1376 ms 207048 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include<bits/stdc++.h>
using namespace std;

#define endl '\n'

struct MST{
	int n;
	vector<vector<int>> seg;
	void init(int n1){
		n = 1;
		while(n < n1) n*=2;
		seg.assign(2*n, vector<int>());
	}
 
	void merge(int i, int j, int k){
		int l = 0;
		int r = 0;
		while(l < seg[j].size() && r < seg[k].size()){
			if(seg[j][l] < seg[k][r]){
				seg[i].push_back(seg[j][l]); l++;
			}
			else{
				seg[i].push_back(seg[k][r]); r++;
			}
		}
		while(l < seg[j].size()){
			seg[i].push_back(seg[j][l]); l++;
		}
		while(r < seg[k].size()){
			seg[i].push_back(seg[k][r]); r++;
		}
	}
 
	void build(vector<int> v){
		for(int i = n; i < 2*n; i++){
			if(i-n >= v.size()) seg[i].push_back(0);
			else seg[i].push_back(v[i-n]);
		}
		for(int i = n-1; i>=0; i--){
			merge(i,2*i, 2*i+1);
		}
	}
 
	int query(int ql, int qr, int v, int k, int l, int r){
		if(r < ql || l > qr) return 0;
		if(ql <= l && r<= qr){
			auto it = lower_bound(seg[k].begin(),seg[k].end(), v);
			if(it == seg[k].begin()) return 0;
			return *(it-1);
		}
		int m = (l+r) / 2;
		int x = query(ql, qr, v, 2*k, l ,m);
		int y = query(ql, qr, v, 2*k+1, m+1 ,r);
		return max(x,y);
	}
 
	int query(int ql, int qr, int v){
		return query(ql, qr, v, 1, 0, n-1);
	}
};

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
  int n,q; cin>>n>>q;
  vector<int> v(n); for(int& i : v) cin>>i;
  vector<int> pre(n+1);
  vector<int> inv;
 	for(int i = 1; i<n; i++){
  	pre[i+1] = pre[i] + (v[i] < v[i-1]); 
  	if(v[i] < v[i-1]) inv.push_back(i-1);
  }
  MST seg; seg.init(n); seg.build(v);
  while(q--){
  	int l,r,k; cin>>l>>r>>k;
  	if(n > 5000){
  		if(pre[r] - pre[l] == 0) cout<<1<<endl;
  		else cout<<0<<endl;
  	}
  	else{
  		l--; r--;
  		int mx = 0;
  		int idx = lower_bound(inv.begin(),inv.end(),l) - inv.begin();
  		// cerr<<"INV ";
	  	for(int x = idx; x < inv.size(); x++){
	  		// cerr<<inv[x]<<" "; 
	  		if(inv[x] >= r) break;
	  		int i = inv[x];
	  		// cerr<<i+1<<" "<<r<<endl;
	  		// cerr<<"QUERY: "<<i<<" "<< seg.query(i+1,r,v[i])<<endl;
	  		int y = seg.query(i+1,r,v[i]);
	  		if(!y) continue;
	  		mx = max(mx, v[i] + y);
	  	}
	  	// cerr<<endl;
	  	if(mx > k) cout<<0<<endl;
	  	else cout<<1<<endl;
  	}
  	
  	
  }
}

Compilation message

sortbooks.cpp: In member function 'void MST::merge(int, int, int)':
sortbooks.cpp:20:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |   while(l < seg[j].size() && r < seg[k].size()){
      |         ~~^~~~~~~~~~~~~~~
sortbooks.cpp:20:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |   while(l < seg[j].size() && r < seg[k].size()){
      |                              ~~^~~~~~~~~~~~~~~
sortbooks.cpp:28:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   while(l < seg[j].size()){
      |         ~~^~~~~~~~~~~~~~~
sortbooks.cpp:31:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |   while(r < seg[k].size()){
      |         ~~^~~~~~~~~~~~~~~
sortbooks.cpp: In member function 'void MST::build(std::vector<int>)':
sortbooks.cpp:38:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |    if(i-n >= v.size()) seg[i].push_back(0);
      |       ~~~~^~~~~~~~~~~
sortbooks.cpp: In function 'int main()':
sortbooks.cpp:87:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |     for(int x = idx; x < inv.size(); x++){
      |                      ~~^~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 424 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 348 KB Output is correct
7 Correct 7 ms 348 KB Output is correct
8 Correct 5 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 424 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 348 KB Output is correct
7 Correct 7 ms 348 KB Output is correct
8 Correct 5 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 166 ms 604 KB Output is correct
12 Correct 689 ms 1800 KB Output is correct
13 Correct 813 ms 1804 KB Output is correct
14 Correct 1335 ms 1804 KB Output is correct
15 Correct 1376 ms 1880 KB Output is correct
16 Correct 958 ms 1812 KB Output is correct
17 Correct 3 ms 1116 KB Output is correct
18 Correct 5 ms 1628 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 685 ms 206988 KB Output is correct
2 Correct 640 ms 207040 KB Output is correct
3 Correct 671 ms 207048 KB Output is correct
4 Correct 644 ms 207044 KB Output is correct
5 Correct 608 ms 204472 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 64 ms 24156 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 424 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 348 KB Output is correct
7 Correct 7 ms 348 KB Output is correct
8 Correct 5 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 166 ms 604 KB Output is correct
12 Correct 689 ms 1800 KB Output is correct
13 Correct 813 ms 1804 KB Output is correct
14 Correct 1335 ms 1804 KB Output is correct
15 Correct 1376 ms 1880 KB Output is correct
16 Correct 958 ms 1812 KB Output is correct
17 Correct 3 ms 1116 KB Output is correct
18 Correct 5 ms 1628 KB Output is correct
19 Incorrect 137 ms 49220 KB Output isn't correct
20 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 424 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 348 KB Output is correct
7 Correct 7 ms 348 KB Output is correct
8 Correct 5 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 166 ms 604 KB Output is correct
12 Correct 689 ms 1800 KB Output is correct
13 Correct 813 ms 1804 KB Output is correct
14 Correct 1335 ms 1804 KB Output is correct
15 Correct 1376 ms 1880 KB Output is correct
16 Correct 958 ms 1812 KB Output is correct
17 Correct 3 ms 1116 KB Output is correct
18 Correct 5 ms 1628 KB Output is correct
19 Correct 685 ms 206988 KB Output is correct
20 Correct 640 ms 207040 KB Output is correct
21 Correct 671 ms 207048 KB Output is correct
22 Correct 644 ms 207044 KB Output is correct
23 Correct 608 ms 204472 KB Output is correct
24 Incorrect 64 ms 24156 KB Output isn't correct
25 Halted 0 ms 0 KB -