oj.uz

Submission #1046937

# Submission time Handle Problem Language Result Execution time Memory
1046937 2024-08-07T06:35:55 Z vjudge1 Index (COCI21_index) C++17
110 / 110
 1247 ms 132000 KB 
#include <bits/stdc++.h>
using namespace std;
#define lalala ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define ll long long 
#define int long long int
#define endl '\n'
#define N 200105
#define MM 200000
#define mod 1000000007
#define pb push_back
#define p push
#define ins insert
#define f first
#define s second

//persistent segment tree kodu ///////////////////////////////////////////////////////////////////////////////////////////////////
int n;
struct node{
	node *left, *right;
	int val;
	node(node* a,node* b){
		val=0;
		left=a;
		right=b;
		if(a) val+=a->val;
		if(b) val+=b->val;
	}
	node(){
		val=0;
		left=NULL;right=NULL;
	}
};

vector<node*> baslar;

node* update(node* x,int l,int r,int hed){
	if(l==r){
		node* yeni=new node;
		yeni->val=x->val+1;
		return yeni;
	}
	if(x->left==NULL)x->left=new node;
	if(x->right==NULL)x->right=new node;
	int mid=(l+r)/2;
	if(hed<=mid){
		return new node(update(x->left,l,mid,hed),x->right);
	}
	return new node(x->left,update(x->right,mid+1,r,hed));
	
}
inline int qua(node* x,int l,int r,int s,int e){
	if(l>r||s>r||e<l||x==NULL) return 0;
	if(s<=l&&r<=e)return x->val;
	int mid=(l+r)/2;
	return qua(x->left, l,mid,s,e)+qua(x->right,mid+1,r,s,e);
}
int cev(int x,int y){
	int l=1,r=n;
	int yes=-1;
	while(l<=r){
		int mid=(l+r)/2;
		int a=qua(baslar[x-1],1,MM,1,MM-mid+1);
		int b=qua(baslar[y],1,MM,1,MM-mid+1);
		//cout<<l<<" "<<r<<" "<<mid<<" "<<a<<" "<<b<<endl;
		if(b-a>=mid){
			yes=mid;
			l=mid+1;
		}
		else r=mid-1;

	}
	return yes;
}
signed main(){
	lalala;
	node* bas=new node;
	baslar.pb(bas);
	int q;cin>>n>>q;
	for(int i=1;i<=n;i++){
		int x;cin>>x;
		int y=MM-x+1;
		node* yeni=update(baslar[baslar.size()-1],1,MM,y);
		baslar.pb(yeni);
	}

	while(q--){
		int x,y;cin>>x>>y;
		cout<<cev(x,y)<<endl;
	}

}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 860 KB Output is correct
2 Correct 2 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Correct 2 ms 860 KB Output is correct
5 Correct 2 ms 1112 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 1116 KB Output is correct
8 Correct 2 ms 1112 KB Output is correct
9 Correct 2 ms 1116 KB Output is correct
10 Correct 2 ms 860 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 860 KB Output is correct
2 Correct 2 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Correct 2 ms 860 KB Output is correct
5 Correct 2 ms 1112 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 1116 KB Output is correct
8 Correct 2 ms 1112 KB Output is correct
9 Correct 2 ms 1116 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 169 ms 33336 KB Output is correct
12 Correct 176 ms 33224 KB Output is correct
13 Correct 168 ms 33228 KB Output is correct
14 Correct 170 ms 33272 KB Output is correct
15 Correct 173 ms 33224 KB Output is correct
16 Correct 187 ms 33324 KB Output is correct
17 Correct 205 ms 33292 KB Output is correct
18 Correct 176 ms 33100 KB Output is correct
19 Correct 175 ms 33308 KB Output is correct
20 Correct 176 ms 33292 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 860 KB Output is correct
2 Correct 2 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Correct 2 ms 860 KB Output is correct
5 Correct 2 ms 1112 KB Output is correct
6 Correct 2 ms 860 KB Output is correct
7 Correct 2 ms 1116 KB Output is correct
8 Correct 2 ms 1112 KB Output is correct
9 Correct 2 ms 1116 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 169 ms 33336 KB Output is correct
12 Correct 176 ms 33224 KB Output is correct
13 Correct 168 ms 33228 KB Output is correct
14 Correct 170 ms 33272 KB Output is correct
15 Correct 173 ms 33224 KB Output is correct
16 Correct 187 ms 33324 KB Output is correct
17 Correct 205 ms 33292 KB Output is correct
18 Correct 176 ms 33100 KB Output is correct
19 Correct 175 ms 33308 KB Output is correct
20 Correct 176 ms 33292 KB Output is correct
21 Correct 1075 ms 131776 KB Output is correct
22 Correct 1086 ms 131772 KB Output is correct
23 Correct 1079 ms 131776 KB Output is correct
24 Correct 1077 ms 131772 KB Output is correct
25 Correct 1167 ms 131876 KB Output is correct
26 Correct 1247 ms 131884 KB Output is correct
27 Correct 1109 ms 132000 KB Output is correct
28 Correct 1077 ms 131784 KB Output is correct
29 Correct 1097 ms 131768 KB Output is correct
30 Correct 1101 ms 131776 KB Output is correct