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답안 #943592

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
943592 2024-03-11T16:02:45 Z penguin133 3단 점프 (JOI19_jumps) C++17
100 / 100
 918 ms 160340 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
int n, A[500005], q, ans[500050];
vector <pi> Q[500005];
struct node{
	int s, e, m, val, val2, lz;
	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), val = max(l->val, r->val);
		else val = A[s];
		val2 = lz = 0;
	}
	void prop(){
		if(lz){
			val2 = max(val2, val + lz);
			if(s != e)l->lz = max(l->lz, lz), r->lz = max(r->lz, lz);
			lz = 0;
		}
	}
	void upd(int a, int b, int c){
		prop();
		if(a == s && b== e)lz = max(lz, c);
		else{
			if(b <= m)l->upd(a, b, c);
			else if(a > m)r->upd(a, b, c);
			else l->upd(a, m, c), r->upd(m+1, b, c);
			l->prop(), r->prop();
			val2 = max(l->val2, r->val2);
		}
	}
	
	int qry(int a, int b){
		prop();
		if(a == s && b == e)return val2;
		if(b <= m)return l->qry(a, b);
		if(a > m)return r->qry(a, b);
		return max(l->qry(a, m), r->qry(m+1, b));
	}
}*root;

vector <int> stuf[500005];

void solve(){
	cin >> n;
	for(int i = 1; i <= n; i++)cin >> A[i];
	root = new node(1, n);
	cin >> q;
	for(int i = 1; i <= q; i++){
		int l, r; cin >> l >> r;
		Q[l].push_back({r, i});
	}
	stack <int> s;
	for(int i = 1; i <= n; i++){
		while(!s.empty() && A[s.top()] < A[i])s.pop();
		if(!s.empty())stuf[s.top()].push_back(i);
		s.push(i);
	}
	while(!s.empty())s.pop();
	for(int i = n; i >= 1; i--){
		while(!s.empty() && A[s.top()] < A[i])s.pop();
		if(!s.empty())stuf[i].push_back(s.top());
		s.push(i);
	}
	for(int i = n; i >= 1; i--){
		for(auto j : stuf[i]){
			if(j * 2 - i <= n)root->upd(j * 2 - i, n, A[i] + A[j]);
		}
		for(auto [a, b] : Q[i])ans[b] = root->qry(i, a);
	}
	for(int i = 1; i <= q; i++)cout << ans[i] << '\n';
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message

jumps.cpp:84:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   84 | main(){
      | ^~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 27228 KB Output is correct
2 Correct 6 ms 27228 KB Output is correct
3 Correct 6 ms 27228 KB Output is correct
4 Correct 6 ms 27324 KB Output is correct
5 Correct 6 ms 27228 KB Output is correct
6 Correct 6 ms 27228 KB Output is correct
7 Correct 7 ms 27320 KB Output is correct
8 Correct 6 ms 27224 KB Output is correct
9 Correct 6 ms 27228 KB Output is correct
10 Correct 6 ms 27260 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 27228 KB Output is correct
2 Correct 6 ms 27228 KB Output is correct
3 Correct 6 ms 27228 KB Output is correct
4 Correct 6 ms 27324 KB Output is correct
5 Correct 6 ms 27228 KB Output is correct
6 Correct 6 ms 27228 KB Output is correct
7 Correct 7 ms 27320 KB Output is correct
8 Correct 6 ms 27224 KB Output is correct
9 Correct 6 ms 27228 KB Output is correct
10 Correct 6 ms 27260 KB Output is correct
11 Correct 183 ms 53084 KB Output is correct
12 Correct 181 ms 53248 KB Output is correct
13 Correct 182 ms 53112 KB Output is correct
14 Correct 178 ms 53076 KB Output is correct
15 Correct 207 ms 53172 KB Output is correct
16 Correct 195 ms 52588 KB Output is correct
17 Correct 181 ms 52436 KB Output is correct
18 Correct 185 ms 52524 KB Output is correct
19 Correct 178 ms 53052 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 130 ms 68128 KB Output is correct
2 Correct 78 ms 68432 KB Output is correct
3 Correct 80 ms 69460 KB Output is correct
4 Correct 126 ms 69012 KB Output is correct
5 Correct 129 ms 69148 KB Output is correct
6 Correct 119 ms 69208 KB Output is correct
7 Correct 120 ms 69104 KB Output is correct
8 Correct 126 ms 69360 KB Output is correct
9 Correct 132 ms 69456 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 27228 KB Output is correct
2 Correct 6 ms 27228 KB Output is correct
3 Correct 6 ms 27228 KB Output is correct
4 Correct 6 ms 27324 KB Output is correct
5 Correct 6 ms 27228 KB Output is correct
6 Correct 6 ms 27228 KB Output is correct
7 Correct 7 ms 27320 KB Output is correct
8 Correct 6 ms 27224 KB Output is correct
9 Correct 6 ms 27228 KB Output is correct
10 Correct 6 ms 27260 KB Output is correct
11 Correct 183 ms 53084 KB Output is correct
12 Correct 181 ms 53248 KB Output is correct
13 Correct 182 ms 53112 KB Output is correct
14 Correct 178 ms 53076 KB Output is correct
15 Correct 207 ms 53172 KB Output is correct
16 Correct 195 ms 52588 KB Output is correct
17 Correct 181 ms 52436 KB Output is correct
18 Correct 185 ms 52524 KB Output is correct
19 Correct 178 ms 53052 KB Output is correct
20 Correct 130 ms 68128 KB Output is correct
21 Correct 78 ms 68432 KB Output is correct
22 Correct 80 ms 69460 KB Output is correct
23 Correct 126 ms 69012 KB Output is correct
24 Correct 129 ms 69148 KB Output is correct
25 Correct 119 ms 69208 KB Output is correct
26 Correct 120 ms 69104 KB Output is correct
27 Correct 126 ms 69360 KB Output is correct
28 Correct 132 ms 69456 KB Output is correct
29 Correct 918 ms 157776 KB Output is correct
30 Correct 865 ms 158692 KB Output is correct
31 Correct 779 ms 158684 KB Output is correct
32 Correct 907 ms 157616 KB Output is correct
33 Correct 865 ms 158040 KB Output is correct
34 Correct 847 ms 155484 KB Output is correct
35 Correct 839 ms 155208 KB Output is correct
36 Correct 866 ms 155412 KB Output is correct
37 Correct 856 ms 156400 KB Output is correct
38 Correct 491 ms 160340 KB Output is correct
39 Correct 491 ms 160340 KB Output is correct
40 Correct 477 ms 156940 KB Output is correct
41 Correct 480 ms 156584 KB Output is correct
42 Correct 472 ms 156436 KB Output is correct
43 Correct 484 ms 158104 KB Output is correct
44 Correct 539 ms 159824 KB Output is correct
45 Correct 545 ms 160064 KB Output is correct
46 Correct 530 ms 156740 KB Output is correct
47 Correct 541 ms 156516 KB Output is correct
48 Correct 538 ms 156496 KB Output is correct
49 Correct 551 ms 158548 KB Output is correct
50 Correct 656 ms 159284 KB Output is correct
51 Correct 643 ms 159292 KB Output is correct
52 Correct 633 ms 156864 KB Output is correct
53 Correct 643 ms 156504 KB Output is correct
54 Correct 647 ms 156496 KB Output is correct
55 Correct 642 ms 158292 KB Output is correct