oj.uz

Submission #1015672

# Submission time Handle Problem Language Result Execution time Memory
1015672 2024-07-06T16:20:39 Z Nurislam Triple Jump (JOI19_jumps) C++17
100 / 100
 861 ms 132088 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define int long long

const int N = 6e5+5, inf = 1e16, mod = 1e9+7;
template <class F, class _S>
bool chmin(F &u, const _S &v){
	bool flag = false;
	if ( u > v ){
		u = v; flag |= true;
	}
	return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
	bool flag = false;
	if ( u < v ){
		u = v; flag |= true;
	}
	return flag;
}
struct node{
	int ans, ab, c;
	
	node operator +(node nw){
		node x;
		x.ans = max(ans, nw.ans);
		x.ab = max(ab, nw.ab);
		x.c = max(c, nw.c);
		return x;
	}
};
struct segtree{
	vector<node> t;
	vector<int> b;
	segtree(){
		t.resize(N*4);
		b.resize(N*4, 0);
	};
	
	void build(int i, int l, int r, vector<int> &a){
		if(l == r){
			t[i] = {a[l], 0ll, a[l]};
			return;
		}
		int m = (l+r)>>1;
		build(i*2, l, m, a);
		build(i*2+1, m+1, r, a);
		t[i] = t[i*2] + t[i*2+1];
	};
	void push(int i, int l, int r){
		if(l!=r){
			chmax(b[i*2],b[i]);
			chmax(b[i*2+1],b[i]);
		}
		chmax(t[i].ab, b[i]);
		chmax(t[i].ans, b[i] + t[i].c);
		b[i] = 0;
		return;
	};
	void upd(int i, int tl, int tr, int l, int r, int val){
		push(i, l, r);
		if(l > tr || r < tl)return;
		if(tl <= l && r <= tr){
			b[i] = val;
			push(i,l,r);
			return;
		}
		int m = (l+r)>>1;
		upd(i*2, tl, tr, l, m, val);
		upd(i*2+1, tl, tr, m+1, r, val);
		t[i] = t[i] + t[i*2];
		t[i] = t[i] + t[i*2+1];
		return;
	};
	
	
	int get(int i, int l, int r, int tl, int tr){
		push(i, l, r);
		if(l > tr || r < tl)return 0ll;
		if(tl <= l && r <= tr)return t[i].ans;
		int m = (l+r)>>1;
		return max(
			get(i*2, l, m, tl, tr),
			get(i*2+1, m+1, r, tl, tr)
			);
	}
	
};
segtree T;
signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);
	int n;
	cin >> n;
	vector<int> a(n+1);
	for(int i = 1; i <= n; i++)cin >> a[i];
	T.build(1, 1, n, a);
	vector<vector<pair<int,int>>> qq(n+1);
	int q;cin >> q;
	for(int i = 0; i < q; i++){
		int l, r;
		cin >> l >> r;
		qq[l].pb({r, i});
	}
	vector<int> ans(q+1);
	vector<pair<int,int>> cur;
	for(int i = n; i > 0; i--){
		while(cur.size() && cur.back().ff < a[i]){
			int A = i, B = cur.back().ss;
			if(2*B-A <= n)T.upd(1, 2*B-A, n, 1, n, a[A] + a[B]);
			cur.pop_back();
		}
		if(cur.size()){
			int A = i, B = cur.back().ss;
			if(2*B-A <= n)T.upd(1, 2*B-A, n, 1, n, a[A] + a[B]);
		}
		cur.pb({a[i], i});
		
		for(auto j:qq[i]){
			ans[j.ss] = T.get(1, 1, n, i, j.ff);
		}
	}
	for(int i = 0; i < q; i++)cout << ans[i] << '\n';
	
	
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 75608 KB Output is correct
2 Correct 25 ms 75612 KB Output is correct
3 Correct 32 ms 75452 KB Output is correct
4 Correct 27 ms 75348 KB Output is correct
5 Correct 25 ms 75612 KB Output is correct
6 Correct 26 ms 75540 KB Output is correct
7 Correct 25 ms 75620 KB Output is correct
8 Correct 25 ms 75448 KB Output is correct
9 Correct 26 ms 75572 KB Output is correct
10 Correct 30 ms 75344 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 75608 KB Output is correct
2 Correct 25 ms 75612 KB Output is correct
3 Correct 32 ms 75452 KB Output is correct
4 Correct 27 ms 75348 KB Output is correct
5 Correct 25 ms 75612 KB Output is correct
6 Correct 26 ms 75540 KB Output is correct
7 Correct 25 ms 75620 KB Output is correct
8 Correct 25 ms 75448 KB Output is correct
9 Correct 26 ms 75572 KB Output is correct
10 Correct 30 ms 75344 KB Output is correct
11 Correct 257 ms 102740 KB Output is correct
12 Correct 234 ms 102864 KB Output is correct
13 Correct 233 ms 102704 KB Output is correct
14 Correct 229 ms 102736 KB Output is correct
15 Correct 267 ms 102812 KB Output is correct
16 Correct 234 ms 101968 KB Output is correct
17 Correct 241 ms 102228 KB Output is correct
18 Correct 237 ms 101844 KB Output is correct
19 Correct 236 ms 102736 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 81744 KB Output is correct
2 Correct 91 ms 85964 KB Output is correct
3 Correct 89 ms 81860 KB Output is correct
4 Correct 146 ms 81748 KB Output is correct
5 Correct 142 ms 81744 KB Output is correct
6 Correct 136 ms 81752 KB Output is correct
7 Correct 138 ms 81856 KB Output is correct
8 Correct 135 ms 81860 KB Output is correct
9 Correct 137 ms 81744 KB Output is correct

Subtask #4
54.0 / 54.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 75608 KB Output is correct
2 Correct 25 ms 75612 KB Output is correct
3 Correct 32 ms 75452 KB Output is correct
4 Correct 27 ms 75348 KB Output is correct
5 Correct 25 ms 75612 KB Output is correct
6 Correct 26 ms 75540 KB Output is correct
7 Correct 25 ms 75620 KB Output is correct
8 Correct 25 ms 75448 KB Output is correct
9 Correct 26 ms 75572 KB Output is correct
10 Correct 30 ms 75344 KB Output is correct
11 Correct 257 ms 102740 KB Output is correct
12 Correct 234 ms 102864 KB Output is correct
13 Correct 233 ms 102704 KB Output is correct
14 Correct 229 ms 102736 KB Output is correct
15 Correct 267 ms 102812 KB Output is correct
16 Correct 234 ms 101968 KB Output is correct
17 Correct 241 ms 102228 KB Output is correct
18 Correct 237 ms 101844 KB Output is correct
19 Correct 236 ms 102736 KB Output is correct
20 Correct 146 ms 81744 KB Output is correct
21 Correct 91 ms 85964 KB Output is correct
22 Correct 89 ms 81860 KB Output is correct
23 Correct 146 ms 81748 KB Output is correct
24 Correct 142 ms 81744 KB Output is correct
25 Correct 136 ms 81752 KB Output is correct
26 Correct 138 ms 81856 KB Output is correct
27 Correct 135 ms 81860 KB Output is correct
28 Correct 137 ms 81744 KB Output is correct
29 Correct 794 ms 124244 KB Output is correct
30 Correct 695 ms 132088 KB Output is correct
31 Correct 618 ms 124316 KB Output is correct
32 Correct 780 ms 124108 KB Output is correct
33 Correct 775 ms 124116 KB Output is correct
34 Correct 861 ms 121940 KB Output is correct
35 Correct 848 ms 121548 KB Output is correct
36 Correct 749 ms 121680 KB Output is correct
37 Correct 827 ms 122908 KB Output is correct
38 Correct 646 ms 126740 KB Output is correct
39 Correct 521 ms 126800 KB Output is correct
40 Correct 582 ms 123532 KB Output is correct
41 Correct 597 ms 122964 KB Output is correct
42 Correct 589 ms 123012 KB Output is correct
43 Correct 590 ms 124752 KB Output is correct
44 Correct 691 ms 127020 KB Output is correct
45 Correct 636 ms 127060 KB Output is correct
46 Correct 625 ms 123816 KB Output is correct
47 Correct 641 ms 123580 KB Output is correct
48 Correct 630 ms 123596 KB Output is correct
49 Correct 621 ms 125520 KB Output is correct
50 Correct 704 ms 127220 KB Output is correct
51 Correct 723 ms 127252 KB Output is correct
52 Correct 660 ms 124752 KB Output is correct
53 Correct 657 ms 124556 KB Output is correct
54 Correct 724 ms 124572 KB Output is correct
55 Correct 652 ms 126152 KB Output is correct