Submission #286748

#	Time	Username	Problem	Language	Result	Execution time	Memory
286748		errorgorn	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	13 / 100	2865 ms	137388 KiB

sortbooks

//雪花飄飄北風嘯嘯
//天地一片蒼茫

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << " is " << x << endl

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
//change less to less_equal for non distinct pbds, but erase will bug

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

int n,q;
int arr[1000005];
int lp[1000005];

struct node{
	int s,e,m;
	int mn,mx;
	node *l,*r;

	node (int _s,int _e){
		s=_s,e=_e,m=s+e>>1;
		
		if (s!=e){
			l=new node(s,m);
			r=new node(m+1,e);
			
			mn=min(l->mn,r->mn);
			mx=max(l->mx,r->mx);
		}
		else{
			mn=mx=arr[s];
		}
	}
	
	int query_mn(int i,int j){
		if (s==i && e==j) return mn;
		else if (j<=m) return l->query_mn(i,j);
		else if (m<i) return r->query_mn(i,j);
		else return min(l->query_mn(i,m),r->query_mn(m+1,j));
	}
	
	int query_mx(int i,int j){
		if (s==i && e==j) return mx;
		else if (j<=m) return l->query_mx(i,j);
		else if (m<i) return r->query_mx(i,j);
		else return max(l->query_mx(i,m),r->query_mx(m+1,j));
	}
} *root;

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	
	cin>>n>>q;
	rep(x,0,n) cin>>arr[x];
	
	rep(x,0,n){
		if (x==0 || arr[x-1]>arr[x]) lp[x]=x;
		else lp[x]=lp[x-1];
	}
	
	root=new node(0,1000005);
	
	int a,b,c;
	while (q--){
		cin>>a>>b>>c;
		
		a--,b--;
		
		if (lp[b]<=a){
			cout<<1<<endl;
			continue;
		}
		
		int lo=lp[b],hi=b+2,mi;
		while (hi-lo>>1){
			mi=lo+hi>>1;
			
			if (mi==b+1 || root->query_mx(a,mi-1)<arr[mi]) lo=mi;
			else hi=mi;
		}
		
		//cout<<root->query_mn(a,lo-1)<<" "<<root->query_mx(a,lo-1)<<endl;
		if (root->query_mn(a,lo-1)+root->query_mx(a,lo-1)<=c) cout<<1<<endl;
		else cout<<0<<endl;
	}
}

Compilation message (stderr)

sortbooks.cpp: In constructor 'node::node(int, int)':
sortbooks.cpp:38:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   38 |   s=_s,e=_e,m=s+e>>1;
      |               ~^~
sortbooks.cpp: In function 'int main()':
sortbooks.cpp:95:12: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   95 |   while (hi-lo>>1){
      |          ~~^~~
sortbooks.cpp:96:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   96 |    mi=lo+hi>>1;
      |       ~~^~~

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