oj.uz

답안 #396442

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
396442 2021-04-30T00:39:02 Z Osama_Alkhodairy 3단 점프 (JOI19_jumps) C++17
100 / 100
 1614 ms 87824 KB 
#include <bits/stdc++.h>
using namespace std;
#define finish(x) return cout << x << endl, 0
#define ll long long

const int N = 500001;

struct item{
    int mx_f, mx_a, mx;
};

int n, q;
vector <int> a, v[N];
vector <pair <int, int> > qu[N];
item tree[4 * N];

item merge(item a, item b){
    item ret = a;
    ret.mx_f = max(ret.mx_f, b.mx_f);
    ret.mx_a = max(ret.mx_a, b.mx_a);
    ret.mx = max(ret.mx, max(b.mx, a.mx_f + b.mx_a));
    return ret;
}
void update(int l, int r, int node, int idx, item c){
    if(r < l || r < idx || l > idx) return;
    if(l == r){
        tree[node].mx_f = max(tree[node].mx_f, c.mx_f);
        tree[node].mx_a = max(tree[node].mx_a, c.mx_a);
        tree[node].mx = tree[node].mx_f + tree[node].mx_a;
        return;
    }
    int mid = (l + r) / 2;
    update(l, mid, 2 * node, idx, c);
    update(mid + 1, r, 2 * node + 1, idx, c);
    tree[node] = merge(tree[2 * node], tree[2 * node + 1]);
}
item query(int l, int r, int node, int s, int e){
    if(r < l || r < s || l > e) return {0, 0, 0};
    if(s <= l && r <= e) return tree[node];
    int mid = (l + r) / 2;
    return merge(query(l, mid, 2 * node, s, e), query(mid + 1, r, 2 * node + 1, s, e));
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin >> n;
    a.resize(n);
    for(auto &i : a) cin >> i;
    vector <int> s;
    for(int i = 0 ; i < n ; i++){
        while(s.size() && a[i] >= a[s.back()]){
            v[s.back()].push_back(i);
            s.pop_back();
        }
        if(s.size()){
            v[s.back()].push_back(i);
        }
        s.push_back(i);
    }
    cin >> q;
    for(int i = 0 ; i < q ; i++){
        int l, r;
        cin >> l >> r;
        l--; r--;
        qu[l].push_back(make_pair(r, i));
    }
    for(int i = 0 ; i < n ; i++){
        update(0, n - 1, 1, i, {0, a[i], 0});
    }
    vector <int> ans(q);
    for(int l = n - 1 ; l >= 0 ; l--){
        for(auto &r : v[l]){
            update(0, n - 1, 1, 2 * r - l, {a[l] + a[r], 0, 0});
        }
        for(auto &i : qu[l]){
            ans[i.second] = query(0, n - 1, 1, l, i.first).mx;
        }
    }
    for(auto &i : ans) cout << i << "\n";
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23756 KB Output is correct
2 Correct 15 ms 23756 KB Output is correct
3 Correct 15 ms 23780 KB Output is correct
4 Correct 15 ms 23884 KB Output is correct
5 Correct 16 ms 23972 KB Output is correct
6 Correct 15 ms 23756 KB Output is correct
7 Correct 15 ms 23760 KB Output is correct
8 Correct 15 ms 23716 KB Output is correct
9 Correct 16 ms 23756 KB Output is correct
10 Correct 15 ms 23712 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23756 KB Output is correct
2 Correct 15 ms 23756 KB Output is correct
3 Correct 15 ms 23780 KB Output is correct
4 Correct 15 ms 23884 KB Output is correct
5 Correct 16 ms 23972 KB Output is correct
6 Correct 15 ms 23756 KB Output is correct
7 Correct 15 ms 23760 KB Output is correct
8 Correct 15 ms 23716 KB Output is correct
9 Correct 16 ms 23756 KB Output is correct
10 Correct 15 ms 23712 KB Output is correct
11 Correct 403 ms 42792 KB Output is correct
12 Correct 403 ms 42800 KB Output is correct
13 Correct 409 ms 42904 KB Output is correct
14 Correct 400 ms 42784 KB Output is correct
15 Correct 403 ms 42824 KB Output is correct
16 Correct 405 ms 42188 KB Output is correct
17 Correct 409 ms 42052 KB Output is correct
18 Correct 401 ms 42140 KB Output is correct
19 Correct 406 ms 42616 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 330 ms 38852 KB Output is correct
2 Correct 222 ms 38792 KB Output is correct
3 Correct 227 ms 39504 KB Output is correct
4 Correct 316 ms 38924 KB Output is correct
5 Correct 319 ms 38896 KB Output is correct
6 Correct 316 ms 38264 KB Output is correct
7 Correct 322 ms 38212 KB Output is correct
8 Correct 316 ms 38076 KB Output is correct
9 Correct 330 ms 38596 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23756 KB Output is correct
2 Correct 15 ms 23756 KB Output is correct
3 Correct 15 ms 23780 KB Output is correct
4 Correct 15 ms 23884 KB Output is correct
5 Correct 16 ms 23972 KB Output is correct
6 Correct 15 ms 23756 KB Output is correct
7 Correct 15 ms 23760 KB Output is correct
8 Correct 15 ms 23716 KB Output is correct
9 Correct 16 ms 23756 KB Output is correct
10 Correct 15 ms 23712 KB Output is correct
11 Correct 403 ms 42792 KB Output is correct
12 Correct 403 ms 42800 KB Output is correct
13 Correct 409 ms 42904 KB Output is correct
14 Correct 400 ms 42784 KB Output is correct
15 Correct 403 ms 42824 KB Output is correct
16 Correct 405 ms 42188 KB Output is correct
17 Correct 409 ms 42052 KB Output is correct
18 Correct 401 ms 42140 KB Output is correct
19 Correct 406 ms 42616 KB Output is correct
20 Correct 330 ms 38852 KB Output is correct
21 Correct 222 ms 38792 KB Output is correct
22 Correct 227 ms 39504 KB Output is correct
23 Correct 316 ms 38924 KB Output is correct
24 Correct 319 ms 38896 KB Output is correct
25 Correct 316 ms 38264 KB Output is correct
26 Correct 322 ms 38212 KB Output is correct
27 Correct 316 ms 38076 KB Output is correct
28 Correct 330 ms 38596 KB Output is correct
29 Correct 1598 ms 82112 KB Output is correct
30 Correct 1309 ms 81504 KB Output is correct
31 Correct 1375 ms 83420 KB Output is correct
32 Correct 1614 ms 82120 KB Output is correct
33 Correct 1609 ms 82264 KB Output is correct
34 Correct 1568 ms 79752 KB Output is correct
35 Correct 1572 ms 79492 KB Output is correct
36 Correct 1569 ms 79520 KB Output is correct
37 Correct 1563 ms 81052 KB Output is correct
38 Correct 1292 ms 87824 KB Output is correct
39 Correct 1287 ms 87820 KB Output is correct
40 Correct 1279 ms 84548 KB Output is correct
41 Correct 1276 ms 84004 KB Output is correct
42 Correct 1296 ms 84120 KB Output is correct
43 Correct 1301 ms 85828 KB Output is correct
44 Correct 1359 ms 87188 KB Output is correct
45 Correct 1363 ms 87220 KB Output is correct
46 Correct 1327 ms 84168 KB Output is correct
47 Correct 1331 ms 83640 KB Output is correct
48 Correct 1335 ms 83564 KB Output is correct
49 Correct 1328 ms 85680 KB Output is correct
50 Correct 1404 ms 85404 KB Output is correct
51 Correct 1402 ms 85316 KB Output is correct
52 Correct 1395 ms 83048 KB Output is correct
53 Correct 1406 ms 82580 KB Output is correct
54 Correct 1397 ms 82624 KB Output is correct
55 Correct 1409 ms 84260 KB Output is correct