Submission #543497

#	Time	Username	Problem	Language	Result	Execution time	Memory
543497		fuad27	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	100 / 100	1808 ms	116556 KiB

sortbooks

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 1e6 + 10; 
#define ff first
#define ss second
ll fen[N];
ll arr[N];
void upd(int at, ll val) {
	while(at > 0) {
		fen[at] = max(fen[at], val);
		at-=at&(-at);
	}
}
ll get(int r) {
	ll mx = 0;
	while(r < N) {
		mx = max(mx, fen[r]);
		r+=r&(-r);
	}
	return mx;
}
int main () {
	int n, m;
	cin >> n >> m;
	for(int i = 0;i<N;i++)fen[i] = 0;
	for(int i = 1;i<=n;i++)cin >> arr[i];
	vector<pair<pair<ll,ll>, ll>> que[n+1];
	for(int i = 0;i<m;i++) {
		ll l, r, v;
		cin >> l >> r >> v;
		que[r].push_back(make_pair(make_pair(l, v), i));
	}
	ll ans[m];
	vector<int> stk;
	stk.push_back(0);
	for(int i = 1;i<=n;i++) {
		while(stk.size() and arr[stk.back()] <= arr[i])stk.pop_back();
		if(stk.size())upd(stk.back(), arr[stk.back()]+arr[i]);
		stk.push_back(i);
		for(auto q:que[i]) {
			ans[q.ss] = get(q.ff.ff)<=q.ff.ss;
		}
	}
	for(int i = 0;i<m;i++)cout << ans[i] << "\n";
}

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