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답안 #541143

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
541143 2022-03-22T11:29:04 Z LittleCube Fire (JOI20_ho_t5) C++14
14 / 100
 912 ms 71080 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 = 400000;
    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 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 696 KB Output is correct
4 Correct 1 ms 708 KB Output is correct
5 Correct 1 ms 692 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 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 2 ms 596 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 692 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 696 KB Output is correct
19 Correct 2 ms 692 KB Output is correct
20 Correct 1 ms 692 KB Output is correct
21 Correct 2 ms 596 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 2 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 1 ms 596 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 596 KB Output is correct
32 Correct 2 ms 692 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 866 ms 68632 KB Output is correct
3 Correct 863 ms 70008 KB Output is correct
4 Correct 872 ms 66604 KB Output is correct
5 Correct 867 ms 68668 KB Output is correct
6 Correct 862 ms 65624 KB Output is correct
7 Correct 894 ms 68256 KB Output is correct
8 Correct 868 ms 67588 KB Output is correct
9 Correct 897 ms 68220 KB Output is correct
10 Correct 884 ms 67296 KB Output is correct
11 Correct 880 ms 69672 KB Output is correct
12 Correct 872 ms 67956 KB Output is correct
13 Correct 868 ms 65948 KB Output is correct
14 Correct 912 ms 67956 KB Output is correct
15 Correct 890 ms 67812 KB Output is correct
16 Correct 847 ms 65696 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 790 ms 69916 KB Output is correct
3 Correct 787 ms 68400 KB Output is correct
4 Correct 815 ms 71080 KB Output is correct
5 Correct 767 ms 69136 KB Output is correct
6 Correct 797 ms 69840 KB Output is correct
7 Correct 796 ms 70152 KB Output is correct
8 Correct 784 ms 69288 KB Output is correct
9 Correct 787 ms 68780 KB Output is correct
10 Correct 749 ms 68008 KB Output is correct
11 Correct 807 ms 70936 KB Output is correct
12 Correct 794 ms 70108 KB Output is correct
13 Correct 812 ms 70292 KB Output is correct
14 Correct 786 ms 68720 KB Output is correct
15 Correct 811 ms 70632 KB Output is correct
16 Correct 788 ms 70120 KB Output is correct

Subtask #4
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 805 ms 68844 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 696 KB Output is correct
4 Correct 1 ms 708 KB Output is correct
5 Correct 1 ms 692 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 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 2 ms 596 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 692 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 696 KB Output is correct
19 Correct 2 ms 692 KB Output is correct
20 Correct 1 ms 692 KB Output is correct
21 Correct 2 ms 596 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 2 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 1 ms 596 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 596 KB Output is correct
32 Correct 2 ms 692 KB Output is correct
33 Correct 866 ms 68632 KB Output is correct
34 Correct 863 ms 70008 KB Output is correct
35 Correct 872 ms 66604 KB Output is correct
36 Correct 867 ms 68668 KB Output is correct
37 Correct 862 ms 65624 KB Output is correct
38 Correct 894 ms 68256 KB Output is correct
39 Correct 868 ms 67588 KB Output is correct
40 Correct 897 ms 68220 KB Output is correct
41 Correct 884 ms 67296 KB Output is correct
42 Correct 880 ms 69672 KB Output is correct
43 Correct 872 ms 67956 KB Output is correct
44 Correct 868 ms 65948 KB Output is correct
45 Correct 912 ms 67956 KB Output is correct
46 Correct 890 ms 67812 KB Output is correct
47 Correct 847 ms 65696 KB Output is correct
48 Correct 790 ms 69916 KB Output is correct
49 Correct 787 ms 68400 KB Output is correct
50 Correct 815 ms 71080 KB Output is correct
51 Correct 767 ms 69136 KB Output is correct
52 Correct 797 ms 69840 KB Output is correct
53 Correct 796 ms 70152 KB Output is correct
54 Correct 784 ms 69288 KB Output is correct
55 Correct 787 ms 68780 KB Output is correct
56 Correct 749 ms 68008 KB Output is correct
57 Correct 807 ms 70936 KB Output is correct
58 Correct 794 ms 70108 KB Output is correct
59 Correct 812 ms 70292 KB Output is correct
60 Correct 786 ms 68720 KB Output is correct
61 Correct 811 ms 70632 KB Output is correct
62 Correct 788 ms 70120 KB Output is correct
63 Incorrect 805 ms 68844 KB Output isn't correct
64 Halted 0 ms 0 KB -