Submission #1297011

#TimeUsernameProblemLanguageResultExecution timeMemory
1297011jahongirHedgehog Daniyar and Algorithms (IZhO19_sortbooks)C++20
0 / 100
696 ms64152 KiB
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
 
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define pi pair<int,int>
#define vi vector<int>
#define pb push_back
#define all(a) a.begin(),a.end()



const int mxn = 1e6+1;
int st[2*mxn], arr[mxn];
bool res[mxn];
int qu[mxn][2];
vector<int> vec[mxn];





void solve(){
	int n,m; cin >> n >> m;
	for(int i = 0; i < n; i++) cin >> arr[i];
	for(int i = 0; i < m; i++){
		int r; cin >> qu[i][0] >> r >> qu[i][1];
		qu[i][0]--;
		vec[r-1].pb(i);
	}
	
	stack<int> sta;
	for(int i = 0; i < n; i++){
		while(!sta.empty() && arr[sta.top()] <= arr[i])
			sta.pop();
		if(!sta.empty()){
			int j = sta.top();
			for(st[j+=n] = arr[sta.top()] + arr[i]; j > 1; j>>=1) st[j>>1] = max(st[j],st[j^1]);
		}
		sta.push(i);

		for(auto j : vec[i]){
			int mx = 0;
			int l = j, r = i+1;
			for(l += n, r += n; l < r; l>>=1, r>>=1){
				if(l&1) mx = max(mx,st[l++]);
				if(r&1) mx = max(mx,st[--r]);
			}
			res[j] = mx <= qu[j][1];
		}
	}

	for(int i = 0; i < m; i++) cout << res[i] << '\n';

}
 
 
signed main(){
	cin.tie(0)->sync_with_stdio(0);
	int t = 1;
	// cin >> t;
	for(int i = 0; i < t; i++){solve();}
}
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