oj.uz

답안 #349076

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
349076 2021-01-16T14:54:32 Z Vanjanja 3단 점프 (JOI19_jumps) C++14
46 / 100
 2153 ms 42756 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 500005;
int a[N];
vector<pair<int, int>> que[N];
int resenje[N];
int seg[2 * N - 1][2];
int lazy[2 * N - 1];
int n;
int ind = 0;

void build(int u, int l, int r) {
    if (l == r) {
        seg[u][1] = a[l];
        return;
    }
    int mid  = (l + r) >> 1;
    build(u * 2 + 1, l, mid);
    build(u * 2 + 2, mid + 1, r);
    seg[u][1] = max(seg[u * 2 + 1][1], seg[u * 2 + 2][1]);
}

void upd(int u, int x) {
    seg[u][0] = max(seg[u][0], x + seg[u][1]);
    lazy[u] = max(lazy[u], x);
}

void shift(int u) {
    if (!lazy[u])
        return;
    upd(u * 2 + 1, lazy[u]);
    upd(u * 2 + 2, lazy[u]);
    lazy[u] = 0;
}

void update(int u, int l, int r, int L, int R, int x) {
    if (r < L || l > R)
        return;
    if (l >= L && r <= R) {
        upd(u, x);
        return;
    }
    shift(u);
    int mid = (l + r) >> 1;
    update(u * 2 + 1, l, mid, L, R, x);
    update(u * 2 + 2, mid + 1, r, L, R, x);
    seg[u][0] = max(seg[u * 2 + 1][0], seg[u * 2 + 2][0]);
}

int out(int u, int l, int r, int L, int R) {
    if (r < L || l > R)
        return 0;
    if (l >= L && r <= R) {
        return seg[u][0];
    }
    shift(u);
    int mid = (l + r) >> 1;
    return max(out(u * 2 + 1, l, mid, L, R), out(u * 2 + 2, mid + 1, r, L, R));
}

void Update() {
    stack<int> s;
    for (int i = n - 1; i >= 0; i--) {
        while (s.size() && a[s.top()] <= a[i]) {
            int l = 2 * s.top() - i;
            if (l < n)
                update(0, 0, n - 1, l, n - 1, a[i] + a[s.top()]);
            s.pop();
        }
        if (s.size()) {
            int l = 2 * s.top() - i;
            if (l < n)
                update(0, 0, n - 1, l, n - 1, a[i] + a[s.top()]);
        }
        s.push(i);
        for (auto j = que[i].begin(); j != que[i].end(); j++) {
            pair<int, int> par = *j;
            resenje[par.second] = out(0, 0, n - 1, i, par.first);
        }
    }
}

bool cmp(pair<pair<int, int>, int> a, pair<pair<int, int>, int> b) {
    return a.first.first >= b.first.first;
}

void solve() {
    int q;
    cin >> n;
    for (int i = 0; i < n; i++)
        cin >> a[i];
    cin >> q;
    for (int i = 0; i < q; i++) {
        int l, r;
        cin >> l >> r;
        que[l - 1].push_back({r - 1, i});
    }
    build(0, 0, n - 1);
    Update();
    for (int i = 0; i < q; i++)
        cout << resenje[i] << endl;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 12140 KB Output is correct
2 Correct 9 ms 12140 KB Output is correct
3 Correct 9 ms 12160 KB Output is correct
4 Correct 10 ms 12140 KB Output is correct
5 Correct 9 ms 12140 KB Output is correct
6 Correct 10 ms 12140 KB Output is correct
7 Correct 9 ms 12268 KB Output is correct
8 Correct 9 ms 12140 KB Output is correct
9 Correct 9 ms 12140 KB Output is correct
10 Correct 9 ms 12140 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 12140 KB Output is correct
2 Correct 9 ms 12140 KB Output is correct
3 Correct 9 ms 12160 KB Output is correct
4 Correct 10 ms 12140 KB Output is correct
5 Correct 9 ms 12140 KB Output is correct
6 Correct 10 ms 12140 KB Output is correct
7 Correct 9 ms 12268 KB Output is correct
8 Correct 9 ms 12140 KB Output is correct
9 Correct 9 ms 12140 KB Output is correct
10 Correct 9 ms 12140 KB Output is correct
11 Correct 1365 ms 26604 KB Output is correct
12 Correct 1353 ms 26580 KB Output is correct
13 Correct 1358 ms 26292 KB Output is correct
14 Correct 1354 ms 26296 KB Output is correct
15 Correct 1357 ms 26512 KB Output is correct
16 Correct 1364 ms 25724 KB Output is correct
17 Correct 1357 ms 25836 KB Output is correct
18 Correct 1367 ms 25708 KB Output is correct
19 Correct 1358 ms 26092 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 149 ms 19052 KB Output is correct
2 Correct 89 ms 19948 KB Output is correct
3 Correct 88 ms 19052 KB Output is correct
4 Correct 149 ms 19180 KB Output is correct
5 Correct 146 ms 19052 KB Output is correct
6 Correct 145 ms 19052 KB Output is correct
7 Correct 148 ms 19052 KB Output is correct
8 Correct 145 ms 19052 KB Output is correct
9 Correct 144 ms 19052 KB Output is correct

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 12140 KB Output is correct
2 Correct 9 ms 12140 KB Output is correct
3 Correct 9 ms 12160 KB Output is correct
4 Correct 10 ms 12140 KB Output is correct
5 Correct 9 ms 12140 KB Output is correct
6 Correct 10 ms 12140 KB Output is correct
7 Correct 9 ms 12268 KB Output is correct
8 Correct 9 ms 12140 KB Output is correct
9 Correct 9 ms 12140 KB Output is correct
10 Correct 9 ms 12140 KB Output is correct
11 Correct 1365 ms 26604 KB Output is correct
12 Correct 1353 ms 26580 KB Output is correct
13 Correct 1358 ms 26292 KB Output is correct
14 Correct 1354 ms 26296 KB Output is correct
15 Correct 1357 ms 26512 KB Output is correct
16 Correct 1364 ms 25724 KB Output is correct
17 Correct 1357 ms 25836 KB Output is correct
18 Correct 1367 ms 25708 KB Output is correct
19 Correct 1358 ms 26092 KB Output is correct
20 Correct 149 ms 19052 KB Output is correct
21 Correct 89 ms 19948 KB Output is correct
22 Correct 88 ms 19052 KB Output is correct
23 Correct 149 ms 19180 KB Output is correct
24 Correct 146 ms 19052 KB Output is correct
25 Correct 145 ms 19052 KB Output is correct
26 Correct 148 ms 19052 KB Output is correct
27 Correct 145 ms 19052 KB Output is correct
28 Correct 144 ms 19052 KB Output is correct
29 Incorrect 2153 ms 42756 KB Output isn't correct
30 Halted 0 ms 0 KB -