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답안 #489579

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
489579 2021-11-23T09:45:42 Z KienTran 3단 점프 (JOI19_jumps) C++14
100 / 100
 1057 ms 114328 KB 
#include <bits/stdc++.h>
#define int long long

using namespace std;

const int O = 5e5 + 5;

int n, q, l[O], r[O], a[O], res[O], tree[O * 4], init[O * 4], lazy[O * 4];
vector <int> qu[O], nxt[O];

void Push(int id){
    int &x = lazy[id];
    if (x == 0) return;

    for (int i = 2 * id; i <= 2 * id + 1; ++ i){
        tree[i] = max(tree[i], init[i] + x);
        lazy[i] = max(lazy[i], x);
    }

    x = 0; return;
}

void Build(int id, int l, int r){
    if (l == r){
        init[id] = a[l];
        return;
    }
    int mid = (l + r) / 2;
    Build(id << 1, l, mid);
    Build(id << 1 | 1, mid + 1, r);
    init[id] = max(init[id << 1], init[id << 1 | 1]);
}

void Update(int id, int l, int r, int u, int v, int x){
    if (l > v || r < u) return;
    if (u <= l && r <= v){
        tree[id] = max(tree[id], init[id] + x);
        lazy[id] = max(lazy[id], x);
        return;
    }
    int mid = (l + r) / 2; Push(id);
    Update(id << 1, l, mid, u, v, x);
    Update(id << 1 | 1, mid + 1, r, u, v, x);
    tree[id] = max(tree[id << 1], tree[id << 1 | 1]);
}

int Get(int id, int l, int r, int u, int v){
    if (l > v || r < u) return 0;
    if (u <= l && r <= v) return tree[id];
    int mid = (l + r) / 2; Push(id);
    return max(Get(id << 1, l, mid, u, v), Get(id << 1 | 1, mid + 1, r, u, v));
}

main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> n;
    for (int i = 1; i <= n; ++ i) cin >> a[i];

    Build(1, 1, n);

    cin >> q;
    for (int i = 1; i <= q; ++ i){
        cin >> l[i] >> r[i];
        qu[l[i]].push_back(i);
    }

    vector <int> Q;
    for (int i = 1; i <= n; ++ i){
        while (Q.size() && a[Q.back()] <= a[i]){
            nxt[Q.back()].push_back(i);
            Q.pop_back();
        }

        if (Q.size()) nxt[Q.back()].push_back(i);

        Q.push_back(i);
    }

    for (int i = n; i >= 1; -- i){
        for (int j : nxt[i]){
            Update(1, 1, n, 2 * j - i, n, a[i] + a[j]);
        }

        for (int j : qu[i]){
            res[j] = Get(1, 1, n, i, r[j]);
        }
    }

    for (int i = 1; i <= q; ++ i) cout << res[i] << "\n";
}

Compilation message

jumps.cpp:54:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   54 | main(){
      | ^~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 23756 KB Output is correct
2 Correct 14 ms 23804 KB Output is correct
3 Correct 13 ms 23852 KB Output is correct
4 Correct 16 ms 23768 KB Output is correct
5 Correct 13 ms 23800 KB Output is correct
6 Correct 13 ms 23804 KB Output is correct
7 Correct 15 ms 23828 KB Output is correct
8 Correct 14 ms 23764 KB Output is correct
9 Correct 14 ms 23756 KB Output is correct
10 Correct 14 ms 23756 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 14 ms 23804 KB Output is correct
3 Correct 13 ms 23852 KB Output is correct
4 Correct 16 ms 23768 KB Output is correct
5 Correct 13 ms 23800 KB Output is correct
6 Correct 13 ms 23804 KB Output is correct
7 Correct 15 ms 23828 KB Output is correct
8 Correct 14 ms 23764 KB Output is correct
9 Correct 14 ms 23756 KB Output is correct
10 Correct 14 ms 23756 KB Output is correct
11 Correct 323 ms 51624 KB Output is correct
12 Correct 291 ms 51916 KB Output is correct
13 Correct 285 ms 52180 KB Output is correct
14 Correct 270 ms 51916 KB Output is correct
15 Correct 290 ms 51972 KB Output is correct
16 Correct 310 ms 51296 KB Output is correct
17 Correct 294 ms 51364 KB Output is correct
18 Correct 290 ms 51208 KB Output is correct
19 Correct 337 ms 51884 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 152 ms 45732 KB Output is correct
2 Correct 92 ms 44684 KB Output is correct
3 Correct 90 ms 46384 KB Output is correct
4 Correct 144 ms 45940 KB Output is correct
5 Correct 155 ms 46128 KB Output is correct
6 Correct 156 ms 46100 KB Output is correct
7 Correct 138 ms 46056 KB Output is correct
8 Correct 143 ms 46128 KB Output is correct
9 Correct 159 ms 46608 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 14 ms 23804 KB Output is correct
3 Correct 13 ms 23852 KB Output is correct
4 Correct 16 ms 23768 KB Output is correct
5 Correct 13 ms 23800 KB Output is correct
6 Correct 13 ms 23804 KB Output is correct
7 Correct 15 ms 23828 KB Output is correct
8 Correct 14 ms 23764 KB Output is correct
9 Correct 14 ms 23756 KB Output is correct
10 Correct 14 ms 23756 KB Output is correct
11 Correct 323 ms 51624 KB Output is correct
12 Correct 291 ms 51916 KB Output is correct
13 Correct 285 ms 52180 KB Output is correct
14 Correct 270 ms 51916 KB Output is correct
15 Correct 290 ms 51972 KB Output is correct
16 Correct 310 ms 51296 KB Output is correct
17 Correct 294 ms 51364 KB Output is correct
18 Correct 290 ms 51208 KB Output is correct
19 Correct 337 ms 51884 KB Output is correct
20 Correct 152 ms 45732 KB Output is correct
21 Correct 92 ms 44684 KB Output is correct
22 Correct 90 ms 46384 KB Output is correct
23 Correct 144 ms 45940 KB Output is correct
24 Correct 155 ms 46128 KB Output is correct
25 Correct 156 ms 46100 KB Output is correct
26 Correct 138 ms 46056 KB Output is correct
27 Correct 143 ms 46128 KB Output is correct
28 Correct 159 ms 46608 KB Output is correct
29 Correct 1020 ms 108632 KB Output is correct
30 Correct 858 ms 105576 KB Output is correct
31 Correct 885 ms 109492 KB Output is correct
32 Correct 1042 ms 108792 KB Output is correct
33 Correct 1032 ms 108696 KB Output is correct
34 Correct 991 ms 106424 KB Output is correct
35 Correct 1008 ms 106052 KB Output is correct
36 Correct 995 ms 106204 KB Output is correct
37 Correct 1057 ms 107608 KB Output is correct
38 Correct 690 ms 114308 KB Output is correct
39 Correct 638 ms 114328 KB Output is correct
40 Correct 611 ms 111176 KB Output is correct
41 Correct 625 ms 110468 KB Output is correct
42 Correct 637 ms 110484 KB Output is correct
43 Correct 630 ms 112284 KB Output is correct
44 Correct 697 ms 113796 KB Output is correct
45 Correct 680 ms 113684 KB Output is correct
46 Correct 661 ms 110600 KB Output is correct
47 Correct 660 ms 110168 KB Output is correct
48 Correct 671 ms 110116 KB Output is correct
49 Correct 679 ms 112284 KB Output is correct
50 Correct 759 ms 111652 KB Output is correct
51 Correct 766 ms 111576 KB Output is correct
52 Correct 713 ms 109188 KB Output is correct
53 Correct 765 ms 108808 KB Output is correct
54 Correct 758 ms 108868 KB Output is correct
55 Correct 731 ms 110556 KB Output is correct