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답안 #541144

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
541144 2022-03-22T11:30:22 Z LittleCube Fire (JOI20_ho_t5) C++14
14 / 100
 891 ms 70768 KB 
#pragma GCC optimize("O3,unroll-loops")
#include <bits/stdc++.h>
#define int long long
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;

struct query
{
    int i, T, L, R;
};

struct SegTree
{
    const static int N = 400005;
    ll seg[4 * N + 5], lazy[4 * N + 5];
    void modify(int pos, ll val, int i = 1, int L = 1, int R = N)
    {
        if (pos <= L)
            lazy[i] += val;
        else if (R < pos)
            return;
        else
        {
            int mid = (L + R) / 2;
            lazy[i * 2] += lazy[i];
            lazy[i * 2 + 1] += lazy[i];
            lazy[i] = 0;
            modify(pos, val, i * 2, L, mid);
            modify(pos, val, i * 2 + 1, mid + 1, R);
            seg[i] = seg[i * 2] + lazy[i * 2] * (mid - L + 1) +
                     seg[i * 2 + 1] + lazy[i * 2 + 1] * (R - mid);
        }
    }
    ll query(int qL, int qR, int i = 1, int L = 1, int R = N)
    {
        if (qL <= L && R <= qR)
            return seg[i] + (R - L + 1) * lazy[i];
        else if (R < qL || qR < L)
            return 0;
        else
        {
            int mid = (L + R) / 2;
            seg[i] += (R - L + 1) * lazy[i];
            lazy[i * 2] += lazy[i];
            lazy[i * 2 + 1] += lazy[i];
            lazy[i] = 0;
            return query(qL, qR, i * 2, L, mid) + query(qL, qR, i * 2 + 1, mid + 1, R);
        }
    }
};

ll N, Q, arr[200005], ans[200005], front[200005], back[200005];
SegTree reg, off;
query q[200005];

signed main()
{
    cin >> N >> Q;
    for (int i = 1; i <= N; i++)
        cin >> arr[i];
    for (int i = 1; i <= Q; i++)
    {
        cin >> q[i].T >> q[i].L >> q[i].R;
        q[i].i = i;
    }
    sort(q + 1, q + 1 + Q, [](query q1, query q2)
         { return q1.T < q2.T; });

    int qdx = 1, odx = 0, rdx = 0;
    vector<pair<int, pll>> offmodifies, regularmodifies;
    vector<int> mono;

    auto triangle = [&](int x, int y, ll val)
    {
        regularmodifies.emplace_back(pair<int, pll>{y, {x, val}});
        offmodifies.emplace_back(pair<int, pll>{y, {x + N - y, -val}});
    };

    for (int i = 1; i <= N; i++)
        triangle(i, 0, arr[i]);

    mono.clear();
    for (int i = 1; i <= N; i++)
    {
        while (!mono.empty() && arr[mono.back()] < arr[i])
            mono.pop_back();
        if (!mono.empty())
        {
            triangle(i, i - mono.back(), -arr[i]);
            front[i] = mono.back();
        }
        mono.emplace_back(i);
    }

    mono.clear();
    for (int i = N; i >= 1; i--)
    {
        while (!mono.empty() && arr[mono.back()] < arr[i])
            mono.pop_back();
        if (!mono.empty())
        {
            triangle(mono.back(), mono.back() - i, -arr[i]);
            back[i] = mono.back();
        }
        mono.emplace_back(i);
    }

    for (int i = 1; i <= N; i++)
        if (front[i] && back[i])
            triangle(back[i], back[i] - front[i], arr[i]);
    sort(regularmodifies.begin(), regularmodifies.end());
    sort(offmodifies.begin(), offmodifies.end());

    for (int i = 0; i <= N; i++)
    {
        while (rdx < regularmodifies.size() && regularmodifies[rdx].F == i)
        {
            reg.modify(regularmodifies[rdx].S.F, regularmodifies[rdx].S.S);
            rdx++;
        }
        while (odx < offmodifies.size() && offmodifies[odx].F == i)
        {
            off.modify(offmodifies[odx].S.F, offmodifies[odx].S.S);
            odx++;
        }

        while (qdx <= Q && q[qdx].T == i)
        {
            ans[q[qdx].i] = reg.query(q[qdx].L, q[qdx].R) + off.query(N - i - 1 + q[qdx].L, N - i - 1 + q[qdx].R);
            qdx++;
        }
    }
    for (int i = 1; i <= Q; i++)
        cout << ans[i] << '\n';
}

/*
4 1 1
4 2 2
4 3 3
4 4 4
4 5 5
*/

Compilation message

ho_t5.cpp: In function 'int main()':
ho_t5.cpp:120:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |         while (rdx < regularmodifies.size() && regularmodifies[rdx].F == i)
      |                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~
ho_t5.cpp:125:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  125 |         while (odx < offmodifies.size() && offmodifies[odx].F == i)
      |                ~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 2 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 2 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 2 ms 596 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 2 ms 568 KB Output is correct
27 Correct 1 ms 596 KB Output is correct
28 Correct 1 ms 596 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 1 ms 564 KB Output is correct
32 Correct 1 ms 596 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 891 ms 68004 KB Output is correct
3 Correct 863 ms 69580 KB Output is correct
4 Correct 859 ms 65868 KB Output is correct
5 Correct 877 ms 68392 KB Output is correct
6 Correct 842 ms 65316 KB Output is correct
7 Correct 863 ms 67996 KB Output is correct
8 Correct 850 ms 67216 KB Output is correct
9 Correct 851 ms 67972 KB Output is correct
10 Correct 845 ms 67084 KB Output is correct
11 Correct 872 ms 69316 KB Output is correct
12 Correct 839 ms 67664 KB Output is correct
13 Correct 843 ms 65460 KB Output is correct
14 Correct 837 ms 67480 KB Output is correct
15 Correct 848 ms 67400 KB Output is correct
16 Correct 843 ms 65448 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 794 ms 69216 KB Output is correct
3 Correct 766 ms 68000 KB Output is correct
4 Correct 805 ms 70768 KB Output is correct
5 Correct 784 ms 68816 KB Output is correct
6 Correct 809 ms 69384 KB Output is correct
7 Correct 788 ms 69784 KB Output is correct
8 Correct 823 ms 69112 KB Output is correct
9 Correct 779 ms 68348 KB Output is correct
10 Correct 774 ms 67700 KB Output is correct
11 Correct 805 ms 70588 KB Output is correct
12 Correct 827 ms 69940 KB Output is correct
13 Correct 809 ms 70060 KB Output is correct
14 Correct 773 ms 68620 KB Output is correct
15 Correct 787 ms 70384 KB Output is correct
16 Correct 803 ms 69948 KB Output is correct

Subtask #4
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 809 ms 68508 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 2 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 2 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 2 ms 596 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 2 ms 568 KB Output is correct
27 Correct 1 ms 596 KB Output is correct
28 Correct 1 ms 596 KB Output is correct
29 Correct 1 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 1 ms 564 KB Output is correct
32 Correct 1 ms 596 KB Output is correct
33 Correct 891 ms 68004 KB Output is correct
34 Correct 863 ms 69580 KB Output is correct
35 Correct 859 ms 65868 KB Output is correct
36 Correct 877 ms 68392 KB Output is correct
37 Correct 842 ms 65316 KB Output is correct
38 Correct 863 ms 67996 KB Output is correct
39 Correct 850 ms 67216 KB Output is correct
40 Correct 851 ms 67972 KB Output is correct
41 Correct 845 ms 67084 KB Output is correct
42 Correct 872 ms 69316 KB Output is correct
43 Correct 839 ms 67664 KB Output is correct
44 Correct 843 ms 65460 KB Output is correct
45 Correct 837 ms 67480 KB Output is correct
46 Correct 848 ms 67400 KB Output is correct
47 Correct 843 ms 65448 KB Output is correct
48 Correct 794 ms 69216 KB Output is correct
49 Correct 766 ms 68000 KB Output is correct
50 Correct 805 ms 70768 KB Output is correct
51 Correct 784 ms 68816 KB Output is correct
52 Correct 809 ms 69384 KB Output is correct
53 Correct 788 ms 69784 KB Output is correct
54 Correct 823 ms 69112 KB Output is correct
55 Correct 779 ms 68348 KB Output is correct
56 Correct 774 ms 67700 KB Output is correct
57 Correct 805 ms 70588 KB Output is correct
58 Correct 827 ms 69940 KB Output is correct
59 Correct 809 ms 70060 KB Output is correct
60 Correct 773 ms 68620 KB Output is correct
61 Correct 787 ms 70384 KB Output is correct
62 Correct 803 ms 69948 KB Output is correct
63 Incorrect 809 ms 68508 KB Output isn't correct
64 Halted 0 ms 0 KB -