oj.uz

답안 #944878

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
944878 2024-03-13T07:15:51 Z gelastropod 3단 점프 (JOI19_jumps) C++14
5 / 100
 260 ms 524288 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

struct node
{
    int s, e, m, v;
    node *l, *r;

    node(int _s, int _e) : s(_s), e(_e), m((_s + _e) / 2), v(0)
    {
        if (s != e)
            l = new node(s, m),
            r = new node(m + 1, e);
    }

    void upd(int n, int x)
    {
        if (s == e)
        {
            v = x;
            return;
        }
        if (n <= m)
            l->upd(n, x);
        else
            r->upd(n, x);
        v = max(l->v, r->v);
    }

    int qry(int a, int b)
    {
        if (b < s || a > e)
            return -1;
        if (a <= s && b >= e)
            return v;
        return max(l->qry(a, b), r->qry(a, b));
    }
} *root;

signed main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int N, x, Q, l, r;
    cin >> N;
    vector<int> stiff;
    root = new node(0, N + 5);
    for (int i = 0; i < N; i++)
    {
        cin >> x;
        root->upd(i, x);
        stiff.push_back(x);
    }
    vector<vector<int>> precomp(N + 5, vector<int>(N + 5, -1)), prefix(N + 5, vector<int>(N + 5, -1)), ans(N, vector<int>(N + 5, -1));
    for (int i = 0; i < N; i++)
    {
        for (int j = i + 2; j < N; j++)
        {
            precomp[i][j] = stiff[i] + stiff[j] + root->qry(i + 1, (i + j) / 2);
        }
    }
    for (int i = N - 1; i >= 0; i--)
    {
        for (int j = i + 2; j < N; j++)
        {
            prefix[i][j] = max(prefix[i + 1][j], precomp[i][j]);
        }
    }
    for (int i = 0; i < N; i++)
    {
        for (int j = i + 2; j < N; j++)
        {
            ans[i][j] = max(ans[i][j - 1], prefix[i][j]);
        }
    }
    cin >> Q;
    for (int i = 0; i < Q; i++)
    {
        cin >> l >> r;
        l--, r--;
        cout << ans[l][r] << '\n';
    }
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Runtime error 217 ms 524288 KB Execution killed with signal 9
12 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 260 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Runtime error 217 ms 524288 KB Execution killed with signal 9
12 Halted 0 ms 0 KB -