Submission #1096647

#	Time	Username	Problem	Language	Result	Execution time	Memory
1096647		rayan_bd	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	77 / 100	1430 ms	262148 KiB

sortbooks

#include <bits/stdc++.h>
 
using namespace std;
 
 
#define getar(ar,n) for(int i=0;i<n;++i) cin>>ar[i]
#define show(n) cout<<n<<'\n'
#define all(v) v.begin(), v.end()
#define br cout<<"\n"
#define pb push_back
#define nl '\n'
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
#define ret return
#define ld long double
#define sza(x) ((int)x.size())
 
struct Node{
	vector<int> vec;
	int mx=0,bad_mx=0;
};
vector<int> ar;
vector<Node> seg;
int mx=0;
 
void build(int node,int start,int end){
	if(start==end){
		seg[node].vec={ar[start]};
		seg[node].mx=ar[start];
		seg[node].bad_mx=0;
		return;
	}
	int mid=start+(end-start)/2;
	build(node*2+1,start,mid);
	build(node*2+2,mid+1,end);
 
	seg[node].vec.assign(seg[node*2+1].vec.size()+seg[node*2+2].vec.size(),0);
	merge(all(seg[node*2+1].vec),all(seg[node*2+2].vec),seg[node].vec.begin());
	seg[node].mx=max(seg[node*2+1].mx,seg[node*2+2].mx);
	int mxx=0;
	for(int i=start;i<=end;++i){
		if(mxx>ar[i]){
			seg[node].bad_mx=max(seg[node].bad_mx,mxx+ar[i]);
		}else{
			mxx=ar[i];
		}
	}
}
 
bool qry(int nd,int start,int end,int l,int r,int k){
	if(start>r||end<l) return 1;
	if(start>=l&&end<=r){
		bool f=(max(seg[nd].bad_mx,(mx>seg[nd].vec[0]?mx+*--lower_bound(all(seg[nd].vec),mx):0))<=k);
		mx=max(mx,seg[nd].mx);
		return f;
	}
	int mid=start+(end-start)/2;
	return ((!qry(nd*2+1,start,mid,l,r,k)||!qry(nd*2+2,mid+1,end,l,r,k))?0:1);
}
 
void solve(){
	int n,l,r,w,q;cin>>n>>q;
	ar.resize(n+1);
	for(int i=0;i<n;++i){
		cin>>ar[i];
	}
	seg.resize(n<<2);
	build(0,0,n-1);
	while(q--){
		cin>>l>>r>>w;
		mx=0;
		cout<<(qry(0,0,n-1,l-1,r-1,w))<<nl;
	}
}
 
 
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    solve();
    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 13 / 13
• Subtask 4: 17 / 17
• Subtask 5: 30 / 30
• Subtask 6: 0 / 23