답안 #339796

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
339796	2020-12-26T08:36:49 Z	mihai145	Mountains (NOI20_mountains)	C++14	100 / 100	649 ms	27660 KB

Mountains

#include <iostream>
#include <algorithm>
#include <unordered_map>

using namespace std;

const int NMAX = 3e5;

int N;
long long v[NMAX + 5], vv[NMAX + 5];

int k;
unordered_map <long long, int> norm;

int st[NMAX + 5], dr[NMAX + 5];

struct AIB
{
    int n, v[NMAX + 5];

    void Reset(int _n)
    {
        n = _n;
        for(int i = 0; i <= n; i++)
            v[i] = 0;
    }

    int Lsb(int x)
    {
        return x & (-x);
    }

    void Update(int pos, int val)
    {
        for(int i = pos; i <= n; i += Lsb(i))
            v[i] += val;
    }

    int Query(int pos)
    {
        int ans = 0;

        for(int i = pos; i > 0; i -= Lsb(i))
            ans += v[i];

        return ans;
    }
};

AIB aib;

int main()
{
    cin >> N;

    for(int i = 1; i <= N; i++)
    {
        cin >> v[i];
        vv[i] = v[i];
    }

    sort(vv + 1, vv + N + 1);

    for(int i = 2; i <= N; i++)
        if(vv[i] != vv[i - 1])
            norm[vv[i - 1]] = ++k;

    norm[vv[N]] = ++k;

    aib.Reset(N);
    for(int i = 1; i <= N; i++)
    {
        st[i] = aib.Query(norm[v[i]] - 1);
        aib.Update(norm[v[i]], 1);
    }

    aib.Reset(N);
    for(int i = N; i >= 1; i--)
    {
        dr[i] = aib.Query(norm[v[i]] - 1);
        aib.Update(norm[v[i]], 1);
    }

    long long sol = 0LL;
    for(int i = 1; i <= N; i++)
        sol += 1LL * st[i] * dr[i];

    cout << sol << '\n';

    return 0;
}

Subtask #1
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	512 ms	21980 KB	Output is correct
3	Correct	503 ms	27484 KB	Output is correct
4	Correct	498 ms	27484 KB	Output is correct
5	Correct	493 ms	27612 KB	Output is correct
6	Correct	486 ms	27612 KB	Output is correct
7	Correct	573 ms	27484 KB	Output is correct
8	Correct	531 ms	27484 KB	Output is correct
9	Correct	288 ms	21024 KB	Output is correct
10	Correct	280 ms	20916 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	98 ms	8556 KB	Output is correct
2	Correct	99 ms	8592 KB	Output is correct
3	Correct	98 ms	8556 KB	Output is correct
4	Correct	101 ms	8684 KB	Output is correct
5	Correct	102 ms	8556 KB	Output is correct
6	Correct	101 ms	8600 KB	Output is correct
7	Correct	98 ms	8556 KB	Output is correct
8	Correct	92 ms	8556 KB	Output is correct
9	Correct	91 ms	8556 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	98 ms	8556 KB	Output is correct
2	Correct	99 ms	8592 KB	Output is correct
3	Correct	98 ms	8556 KB	Output is correct
4	Correct	101 ms	8684 KB	Output is correct
5	Correct	102 ms	8556 KB	Output is correct
6	Correct	101 ms	8600 KB	Output is correct
7	Correct	98 ms	8556 KB	Output is correct
8	Correct	92 ms	8556 KB	Output is correct
9	Correct	91 ms	8556 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	116 ms	8572 KB	Output is correct
12	Correct	117 ms	8556 KB	Output is correct
13	Correct	115 ms	8812 KB	Output is correct
14	Correct	111 ms	8556 KB	Output is correct
15	Correct	115 ms	8684 KB	Output is correct
16	Correct	114 ms	8560 KB	Output is correct
17	Correct	112 ms	8556 KB	Output is correct
18	Correct	101 ms	8556 KB	Output is correct
19	Correct	108 ms	8556 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct

Subtask #5
28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	12 ms	1260 KB	Output is correct
12	Correct	12 ms	1260 KB	Output is correct
13	Correct	12 ms	1260 KB	Output is correct
14	Correct	12 ms	1260 KB	Output is correct
15	Correct	12 ms	1260 KB	Output is correct
16	Correct	12 ms	1260 KB	Output is correct
17	Correct	12 ms	1260 KB	Output is correct
18	Correct	13 ms	1132 KB	Output is correct
19	Correct	5 ms	620 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	98 ms	8556 KB	Output is correct
2	Correct	99 ms	8592 KB	Output is correct
3	Correct	98 ms	8556 KB	Output is correct
4	Correct	101 ms	8684 KB	Output is correct
5	Correct	102 ms	8556 KB	Output is correct
6	Correct	101 ms	8600 KB	Output is correct
7	Correct	98 ms	8556 KB	Output is correct
8	Correct	92 ms	8556 KB	Output is correct
9	Correct	91 ms	8556 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	116 ms	8572 KB	Output is correct
12	Correct	117 ms	8556 KB	Output is correct
13	Correct	115 ms	8812 KB	Output is correct
14	Correct	111 ms	8556 KB	Output is correct
15	Correct	115 ms	8684 KB	Output is correct
16	Correct	114 ms	8560 KB	Output is correct
17	Correct	112 ms	8556 KB	Output is correct
18	Correct	101 ms	8556 KB	Output is correct
19	Correct	108 ms	8556 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	244 ms	12580 KB	Output is correct
22	Correct	215 ms	12468 KB	Output is correct
23	Correct	225 ms	12608 KB	Output is correct
24	Correct	208 ms	12560 KB	Output is correct
25	Correct	228 ms	12560 KB	Output is correct
26	Correct	229 ms	12560 KB	Output is correct
27	Correct	205 ms	12560 KB	Output is correct
28	Correct	166 ms	12432 KB	Output is correct
29	Correct	139 ms	12692 KB	Output is correct
30	Correct	1 ms	364 KB	Output is correct

Subtask #7
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	512 ms	21980 KB	Output is correct
3	Correct	503 ms	27484 KB	Output is correct
4	Correct	498 ms	27484 KB	Output is correct
5	Correct	493 ms	27612 KB	Output is correct
6	Correct	486 ms	27612 KB	Output is correct
7	Correct	573 ms	27484 KB	Output is correct
8	Correct	531 ms	27484 KB	Output is correct
9	Correct	288 ms	21024 KB	Output is correct
10	Correct	280 ms	20916 KB	Output is correct
11	Correct	98 ms	8556 KB	Output is correct
12	Correct	99 ms	8592 KB	Output is correct
13	Correct	98 ms	8556 KB	Output is correct
14	Correct	101 ms	8684 KB	Output is correct
15	Correct	102 ms	8556 KB	Output is correct
16	Correct	101 ms	8600 KB	Output is correct
17	Correct	98 ms	8556 KB	Output is correct
18	Correct	92 ms	8556 KB	Output is correct
19	Correct	91 ms	8556 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	116 ms	8572 KB	Output is correct
22	Correct	117 ms	8556 KB	Output is correct
23	Correct	115 ms	8812 KB	Output is correct
24	Correct	111 ms	8556 KB	Output is correct
25	Correct	115 ms	8684 KB	Output is correct
26	Correct	114 ms	8560 KB	Output is correct
27	Correct	112 ms	8556 KB	Output is correct
28	Correct	101 ms	8556 KB	Output is correct
29	Correct	108 ms	8556 KB	Output is correct
30	Correct	1 ms	364 KB	Output is correct
31	Correct	1 ms	364 KB	Output is correct
32	Correct	1 ms	364 KB	Output is correct
33	Correct	1 ms	364 KB	Output is correct
34	Correct	1 ms	364 KB	Output is correct
35	Correct	1 ms	364 KB	Output is correct
36	Correct	1 ms	364 KB	Output is correct
37	Correct	1 ms	364 KB	Output is correct
38	Correct	1 ms	364 KB	Output is correct
39	Correct	1 ms	492 KB	Output is correct
40	Correct	1 ms	364 KB	Output is correct
41	Correct	12 ms	1260 KB	Output is correct
42	Correct	12 ms	1260 KB	Output is correct
43	Correct	12 ms	1260 KB	Output is correct
44	Correct	12 ms	1260 KB	Output is correct
45	Correct	12 ms	1260 KB	Output is correct
46	Correct	12 ms	1260 KB	Output is correct
47	Correct	12 ms	1260 KB	Output is correct
48	Correct	13 ms	1132 KB	Output is correct
49	Correct	5 ms	620 KB	Output is correct
50	Correct	1 ms	364 KB	Output is correct
51	Correct	244 ms	12580 KB	Output is correct
52	Correct	215 ms	12468 KB	Output is correct
53	Correct	225 ms	12608 KB	Output is correct
54	Correct	208 ms	12560 KB	Output is correct
55	Correct	228 ms	12560 KB	Output is correct
56	Correct	229 ms	12560 KB	Output is correct
57	Correct	205 ms	12560 KB	Output is correct
58	Correct	166 ms	12432 KB	Output is correct
59	Correct	139 ms	12692 KB	Output is correct
60	Correct	1 ms	364 KB	Output is correct
61	Correct	602 ms	27660 KB	Output is correct
62	Correct	587 ms	27612 KB	Output is correct
63	Correct	597 ms	27580 KB	Output is correct
64	Correct	605 ms	27612 KB	Output is correct
65	Correct	649 ms	27596 KB	Output is correct
66	Correct	619 ms	27612 KB	Output is correct
67	Correct	620 ms	27612 KB	Output is correct
68	Correct	411 ms	21044 KB	Output is correct
69	Correct	258 ms	16436 KB	Output is correct
70	Correct	1 ms	364 KB	Output is correct

답안 #339796

Compilation message

Subtask #1 2.0 / 2.0

Subtask #2 4.0 / 4.0

Subtask #3 9.0 / 9.0

Subtask #4 36.0 / 36.0

Subtask #5 28.0 / 28.0

Subtask #6 9.0 / 9.0

Subtask #7 12.0 / 12.0

Subtask #1
2.0 / 2.0

Subtask #2
4.0 / 4.0

Subtask #3
9.0 / 9.0

Subtask #4
36.0 / 36.0

Subtask #5
28.0 / 28.0

Subtask #6
9.0 / 9.0

Subtask #7
12.0 / 12.0