Submission #1096624

#	Time	Username	Problem	Language	Result	Execution time	Memory
1096624		rayan_bd	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	17 / 100	3043 ms	262144 KiB

sortbooks

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;

typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> pbds; 


#define getar(ar,n) for(ll 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 ll long long
#define ld long double
#define sza(x) ((int)x.size())

const int mxN = 1e6 + 5;
const ll MOD = 1e9 + 7;
const ll INF = 1e18;
const ld EPS = 1e-9;

struct Node{
	vector<ll> vec;
	ll mx=0,bad_mx=0;
};
Node seg[mxN*4];
ll ar[mxN];

Node dummy_node;


ll calc1(ll node){
	ll lft_max=seg[node*2+1].mx;
	ll ans=-lft_max,st=0,en=seg[node*2+2].vec.size()-1;
	while(st<=en){
		ll mid=st+(en-st)/2;
		if(seg[node*2+2].vec[mid]<lft_max){
			st=mid+1;
			ans=seg[node*2+2].vec[mid];
		}else{
			en=mid-1;
		}
	}
	return ans+lft_max;
}

Node left_right_mrg(Node lft,Node rgt){
	ll lft_max=lft.mx;
	ll ans=-lft_max,st=0,en=rgt.vec.size()-1;
	while(st<=en){
		ll mid=st+(en-st)/2;
		if(rgt.vec[mid]<lft_max){
			st=mid+1;
			ans=rgt.vec[mid];
		}else{
			en=mid-1;
		}
	}	
	ans+=lft_max;

	Node curr;
	curr.bad_mx=max({lft.bad_mx,ans,rgt.bad_mx});
	merge(all(lft.vec),all(rgt.vec),back_inserter(curr.vec));
	curr.mx=max(lft.mx,rgt.mx);

	return curr;
}

void build(ll node,ll start,ll end){
	if(start==end){
		seg[node].vec.pb(ar[start]);
		seg[node].mx=ar[start];
		seg[node].bad_mx=0;
		return;
	}
	ll mid=start+(end-start)/2;
	build(node*2+1,start,mid);
	build(node*2+2,mid+1,end);

	merge(all(seg[node*2+1].vec),all(seg[node*2+2].vec),back_inserter(seg[node].vec));
	seg[node].bad_mx=max({seg[node*2+1].bad_mx,seg[node*2+2].bad_mx,calc1(node)});
	seg[node].mx=max(seg[node*2+1].mx,seg[node*2+2].mx);
}

Node qry(ll nd,ll start,ll end,ll l,ll r){
	if(start>r||end<l) return dummy_node;
	if(start>=l&&end<=r) return seg[nd];
	ll mid=start+(end-start)/2;
	Node lft=qry(nd*2+1,start,mid,l,r);
	Node rgt=qry(nd*2+2,mid+1,end,l,r);
	if(lft.mx==-1) return rgt;
	else if(rgt.mx==-1) return lft;
	return left_right_mrg(lft,rgt);
}

void solve(){
	ll n,l,r,w,q;cin>>n>>q;
	for(ll i=0;i<n;++i){
		cin>>ar[i];
	}
	dummy_node.mx=-1;
	build(0,0,n-1);
	while(q--){
		cin>>l>>r>>w;
		cout<<(qry(0,0,n-1,l-1,r-1).bad_mx<=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: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23