oj.uz

답안 #502930

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
502930 2022-01-06T18:46:00 Z amunduzbaev 3단 점프 (JOI19_jumps) C++14
100 / 100
 1298 ms 106564 KB 
#include "bits/stdc++.h"
using namespace std;
 
#define ar array
#define int long long

const int N = 5e5 + 5;

struct ST{
	int tree[N * 4], add[N * 4], p[N * 4];
	void sett(int i, int v, int lx = 0, int rx = N, int x = 1){
		if(lx == rx) { add[x] = v; return; }
		int m = (lx + rx) >> 1;
		if(i <= m) sett(i, v, lx, m, x<<1);
		else sett(i, v, m+1, rx, x<<1|1);
		add[x] = max(add[x<<1], add[x<<1|1]);
	}
	
	void push(int x, int lx, int rx){
		if(lx == rx || !p[x]) return;
		tree[x<<1] = max(tree[x<<1], p[x] + add[x<<1]);
		tree[x<<1|1] = max(tree[x<<1|1], p[x] + add[x<<1|1]);
		p[x<<1] = max(p[x<<1], p[x]), p[x<<1|1] = max(p[x<<1|1], p[x]);
		p[x] = 0; 
	}
	
	void umax(int l, int r, int v, int lx = 0, int rx = N, int x = 1){
		if(lx > r || rx < l) return;
		if(lx >= l && rx <= r){
			tree[x] = max(tree[x], v + add[x]);
			p[x] = max(p[x], v); return;
		} push(x, lx, rx); int m = (lx + rx) >> 1;
		umax(l, r, v, lx, m, x<<1), umax(l, r, v, m+1, rx, x<<1|1);
		tree[x] = max(tree[x<<1], tree[x<<1|1]);
	}
	
	int get(int l, int r, int lx = 0, int rx = N, int x = 1){
		if(lx > r || rx < l) return 0;
		if(lx >= l && rx <= r) return tree[x];
		push(x, lx, rx);
		int m = (lx + rx) >> 1;
		return max(get(l, r, lx, m, x<<1), get(l, r, m+1, rx, x<<1|1));
	}
}tree;
 
signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n; cin>>n;
	vector<int> a(n);
	for(int i=0;i<n;i++) cin>>a[i];
	vector<vector<ar<int, 2>>> qq(n);
	int q; cin>>q;
	for(int i=0;i<q;i++){
		int l, r; cin>>l>>r; l--, r--;
		qq[l].push_back({r, i});
	}
	
	for(int i=0;i<n;i++) tree.sett(i, a[i]);
	vector<int> ss;
	vector<vector<int>> pp(n);
	for(int i=0;i<n;i++){
		while(!ss.empty() && a[ss.back()] < a[i]) ss.pop_back();
		if(!ss.empty()) pp[ss.back()].push_back(i);
		ss.push_back(i);
	} ss.clear();
	for(int i=n-1;~i;i--){
		while(!ss.empty() && a[ss.back()] < a[i]) ss.pop_back();
		if(!ss.empty()) pp[i].push_back(ss.back());
		ss.push_back(i);
	}
	
	vector<int> res(q);
	for(int i=n-1;~i;i--){
		for(auto j : pp[i]){
			if(j + j - i < n) tree.umax(j + j - i, n - 1, a[i] + a[j]);
		}
		
		for(auto x : qq[i]){
			res[x[1]] = tree.get(i, x[0]);
		}
	}
	
	for(int i=0;i<q;i++) cout<<res[i]<<"\n";
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 576 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 444 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 448 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 576 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 444 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 448 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 281 ms 28052 KB Output is correct
12 Correct 269 ms 28128 KB Output is correct
13 Correct 298 ms 28116 KB Output is correct
14 Correct 258 ms 28012 KB Output is correct
15 Correct 264 ms 28132 KB Output is correct
16 Correct 251 ms 27520 KB Output is correct
17 Correct 326 ms 27456 KB Output is correct
18 Correct 280 ms 27164 KB Output is correct
19 Correct 243 ms 27880 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 210 ms 30272 KB Output is correct
2 Correct 139 ms 30592 KB Output is correct
3 Correct 133 ms 30764 KB Output is correct
4 Correct 209 ms 30308 KB Output is correct
5 Correct 253 ms 30220 KB Output is correct
6 Correct 220 ms 29744 KB Output is correct
7 Correct 208 ms 29632 KB Output is correct
8 Correct 227 ms 29632 KB Output is correct
9 Correct 208 ms 30148 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 576 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 444 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 1 ms 448 KB Output is correct
9 Correct 0 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 281 ms 28052 KB Output is correct
12 Correct 269 ms 28128 KB Output is correct
13 Correct 298 ms 28116 KB Output is correct
14 Correct 258 ms 28012 KB Output is correct
15 Correct 264 ms 28132 KB Output is correct
16 Correct 251 ms 27520 KB Output is correct
17 Correct 326 ms 27456 KB Output is correct
18 Correct 280 ms 27164 KB Output is correct
19 Correct 243 ms 27880 KB Output is correct
20 Correct 210 ms 30272 KB Output is correct
21 Correct 139 ms 30592 KB Output is correct
22 Correct 133 ms 30764 KB Output is correct
23 Correct 209 ms 30308 KB Output is correct
24 Correct 253 ms 30220 KB Output is correct
25 Correct 220 ms 29744 KB Output is correct
26 Correct 208 ms 29632 KB Output is correct
27 Correct 227 ms 29632 KB Output is correct
28 Correct 208 ms 30148 KB Output is correct
29 Correct 1203 ms 103980 KB Output is correct
30 Correct 1002 ms 104836 KB Output is correct
31 Correct 970 ms 104884 KB Output is correct
32 Correct 1172 ms 104068 KB Output is correct
33 Correct 1199 ms 104028 KB Output is correct
34 Correct 1236 ms 101620 KB Output is correct
35 Correct 1298 ms 101420 KB Output is correct
36 Correct 1185 ms 101388 KB Output is correct
37 Correct 1195 ms 102840 KB Output is correct
38 Correct 959 ms 106536 KB Output is correct
39 Correct 996 ms 106564 KB Output is correct
40 Correct 995 ms 103144 KB Output is correct
41 Correct 1010 ms 102680 KB Output is correct
42 Correct 1058 ms 102724 KB Output is correct
43 Correct 904 ms 104564 KB Output is correct
44 Correct 988 ms 106376 KB Output is correct
45 Correct 999 ms 106244 KB Output is correct
46 Correct 909 ms 103256 KB Output is correct
47 Correct 1029 ms 102748 KB Output is correct
48 Correct 973 ms 102788 KB Output is correct
49 Correct 967 ms 104840 KB Output is correct
50 Correct 1037 ms 105584 KB Output is correct
51 Correct 1047 ms 105600 KB Output is correct
52 Correct 1056 ms 102976 KB Output is correct
53 Correct 1031 ms 102740 KB Output is correct
54 Correct 1039 ms 102792 KB Output is correct
55 Correct 1024 ms 104388 KB Output is correct