답안 #478190

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
478190	2021-10-06T11:01:36 Z	blue	Mountains (NOI20_mountains)	C++17	100 / 100	156 ms	16476 KB

Mountains

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

const int maxN = 300'000;
long long H[1+maxN];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N;
    cin >> N;

    for(int i = 1; i <= N; i++) cin >> H[i];

    vector<int> ind(N);
    for(int i = 1; i <= N; i++) ind[i-1] = i;

    sort(ind.begin(), ind.end(), [] (int p, int q)
    {
        if(H[p] == H[q]) return p > q;
        return H[p] < H[q];
    });

    vector<long long> lft(1+N, 0), rgt(1+N, 0);

    vector<int> BIT(1+N, 0);
    for(int i: ind)
    {
        for(int j = i; j <= N; j += j&-j)
            BIT[j]++;

        for(int j = i-1; j >= 1; j -= j&-j)
            lft[i] += BIT[j];
    }
    // cerr << "check\n";

    BIT = vector<int>(1+N, 0);
    sort(ind.begin(), ind.end(), [] (int p, int q)
    {
        if(H[p] == H[q]) return p < q;
        return H[p] < H[q];
    });

    // cerr << "check\n";

    for(int i: ind)
    {
        for(int j = i; j <= N; j += j&-j)
            BIT[j]++;

        for(int j = N; j >= 1; j -= j&-j)
            rgt[i] += BIT[j];

        for(int j = i; j >= 1; j -= j&-j)
            rgt[i] -= BIT[j];
    }

    // for(int i = 1; i <= N; i++) cerr << lft[i] << ' ';
    // cerr << '\n';

    long long ans = 0;
    for(int i = 1; i <= N; i++) ans += lft[i] * rgt[i];

    cout << ans << '\n';
}

Subtask #1
2.0 / 2.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	102 ms	16336 KB	Output is correct
3	Correct	103 ms	16412 KB	Output is correct
4	Correct	102 ms	16272 KB	Output is correct
5	Correct	104 ms	16324 KB	Output is correct
6	Correct	96 ms	16256 KB	Output is correct
7	Correct	99 ms	16324 KB	Output is correct
8	Correct	93 ms	16324 KB	Output is correct
9	Correct	105 ms	16476 KB	Output is correct
10	Correct	102 ms	16372 KB	Output is correct

Subtask #2
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	91 ms	10852 KB	Output is correct
2	Correct	107 ms	10828 KB	Output is correct
3	Correct	95 ms	10856 KB	Output is correct
4	Correct	107 ms	10820 KB	Output is correct
5	Correct	90 ms	10852 KB	Output is correct
6	Correct	110 ms	10868 KB	Output is correct
7	Correct	112 ms	10764 KB	Output is correct
8	Correct	129 ms	10868 KB	Output is correct
9	Correct	113 ms	10884 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct

Subtask #3
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	91 ms	10852 KB	Output is correct
2	Correct	107 ms	10828 KB	Output is correct
3	Correct	95 ms	10856 KB	Output is correct
4	Correct	107 ms	10820 KB	Output is correct
5	Correct	90 ms	10852 KB	Output is correct
6	Correct	110 ms	10868 KB	Output is correct
7	Correct	112 ms	10764 KB	Output is correct
8	Correct	129 ms	10868 KB	Output is correct
9	Correct	113 ms	10884 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	114 ms	10872 KB	Output is correct
12	Correct	115 ms	10840 KB	Output is correct
13	Correct	119 ms	10876 KB	Output is correct
14	Correct	111 ms	10752 KB	Output is correct
15	Correct	131 ms	10872 KB	Output is correct
16	Correct	124 ms	10764 KB	Output is correct
17	Correct	124 ms	10820 KB	Output is correct
18	Correct	81 ms	10820 KB	Output is correct
19	Correct	82 ms	10820 KB	Output is correct
20	Correct	0 ms	204 KB	Output is correct

Subtask #4
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	336 KB	Output is correct
3	Correct	1 ms	336 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	336 KB	Output is correct
8	Correct	1 ms	336 KB	Output is correct
9	Correct	1 ms	336 KB	Output is correct
10	Correct	1 ms	208 KB	Output is correct

Subtask #5
28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	336 KB	Output is correct
3	Correct	1 ms	336 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	336 KB	Output is correct
8	Correct	1 ms	336 KB	Output is correct
9	Correct	1 ms	336 KB	Output is correct
10	Correct	1 ms	208 KB	Output is correct
11	Correct	4 ms	848 KB	Output is correct
12	Correct	4 ms	848 KB	Output is correct
13	Correct	4 ms	848 KB	Output is correct
14	Correct	4 ms	848 KB	Output is correct
15	Correct	5 ms	848 KB	Output is correct
16	Correct	4 ms	844 KB	Output is correct
17	Correct	4 ms	848 KB	Output is correct
18	Correct	4 ms	844 KB	Output is correct
19	Correct	3 ms	592 KB	Output is correct
20	Correct	1 ms	208 KB	Output is correct

Subtask #6
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	91 ms	10852 KB	Output is correct
2	Correct	107 ms	10828 KB	Output is correct
3	Correct	95 ms	10856 KB	Output is correct
4	Correct	107 ms	10820 KB	Output is correct
5	Correct	90 ms	10852 KB	Output is correct
6	Correct	110 ms	10868 KB	Output is correct
7	Correct	112 ms	10764 KB	Output is correct
8	Correct	129 ms	10868 KB	Output is correct
9	Correct	113 ms	10884 KB	Output is correct
10	Correct	0 ms	204 KB	Output is correct
11	Correct	114 ms	10872 KB	Output is correct
12	Correct	115 ms	10840 KB	Output is correct
13	Correct	119 ms	10876 KB	Output is correct
14	Correct	111 ms	10752 KB	Output is correct
15	Correct	131 ms	10872 KB	Output is correct
16	Correct	124 ms	10764 KB	Output is correct
17	Correct	124 ms	10820 KB	Output is correct
18	Correct	81 ms	10820 KB	Output is correct
19	Correct	82 ms	10820 KB	Output is correct
20	Correct	0 ms	204 KB	Output is correct
21	Correct	128 ms	10872 KB	Output is correct
22	Correct	132 ms	10868 KB	Output is correct
23	Correct	129 ms	10940 KB	Output is correct
24	Correct	131 ms	10756 KB	Output is correct
25	Correct	115 ms	10868 KB	Output is correct
26	Correct	123 ms	10824 KB	Output is correct
27	Correct	121 ms	10820 KB	Output is correct
28	Correct	79 ms	10820 KB	Output is correct
29	Correct	72 ms	10816 KB	Output is correct
30	Correct	0 ms	204 KB	Output is correct

Subtask #7
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	102 ms	16336 KB	Output is correct
3	Correct	103 ms	16412 KB	Output is correct
4	Correct	102 ms	16272 KB	Output is correct
5	Correct	104 ms	16324 KB	Output is correct
6	Correct	96 ms	16256 KB	Output is correct
7	Correct	99 ms	16324 KB	Output is correct
8	Correct	93 ms	16324 KB	Output is correct
9	Correct	105 ms	16476 KB	Output is correct
10	Correct	102 ms	16372 KB	Output is correct
11	Correct	91 ms	10852 KB	Output is correct
12	Correct	107 ms	10828 KB	Output is correct
13	Correct	95 ms	10856 KB	Output is correct
14	Correct	107 ms	10820 KB	Output is correct
15	Correct	90 ms	10852 KB	Output is correct
16	Correct	110 ms	10868 KB	Output is correct
17	Correct	112 ms	10764 KB	Output is correct
18	Correct	129 ms	10868 KB	Output is correct
19	Correct	113 ms	10884 KB	Output is correct
20	Correct	0 ms	204 KB	Output is correct
21	Correct	114 ms	10872 KB	Output is correct
22	Correct	115 ms	10840 KB	Output is correct
23	Correct	119 ms	10876 KB	Output is correct
24	Correct	111 ms	10752 KB	Output is correct
25	Correct	131 ms	10872 KB	Output is correct
26	Correct	124 ms	10764 KB	Output is correct
27	Correct	124 ms	10820 KB	Output is correct
28	Correct	81 ms	10820 KB	Output is correct
29	Correct	82 ms	10820 KB	Output is correct
30	Correct	0 ms	204 KB	Output is correct
31	Correct	1 ms	332 KB	Output is correct
32	Correct	1 ms	336 KB	Output is correct
33	Correct	1 ms	336 KB	Output is correct
34	Correct	1 ms	336 KB	Output is correct
35	Correct	1 ms	336 KB	Output is correct
36	Correct	1 ms	336 KB	Output is correct
37	Correct	1 ms	336 KB	Output is correct
38	Correct	1 ms	336 KB	Output is correct
39	Correct	1 ms	336 KB	Output is correct
40	Correct	1 ms	208 KB	Output is correct
41	Correct	4 ms	848 KB	Output is correct
42	Correct	4 ms	848 KB	Output is correct
43	Correct	4 ms	848 KB	Output is correct
44	Correct	4 ms	848 KB	Output is correct
45	Correct	5 ms	848 KB	Output is correct
46	Correct	4 ms	844 KB	Output is correct
47	Correct	4 ms	848 KB	Output is correct
48	Correct	4 ms	844 KB	Output is correct
49	Correct	3 ms	592 KB	Output is correct
50	Correct	1 ms	208 KB	Output is correct
51	Correct	128 ms	10872 KB	Output is correct
52	Correct	132 ms	10868 KB	Output is correct
53	Correct	129 ms	10940 KB	Output is correct
54	Correct	131 ms	10756 KB	Output is correct
55	Correct	115 ms	10868 KB	Output is correct
56	Correct	123 ms	10824 KB	Output is correct
57	Correct	121 ms	10820 KB	Output is correct
58	Correct	79 ms	10820 KB	Output is correct
59	Correct	72 ms	10816 KB	Output is correct
60	Correct	0 ms	204 KB	Output is correct
61	Correct	151 ms	16324 KB	Output is correct
62	Correct	139 ms	16304 KB	Output is correct
63	Correct	138 ms	16388 KB	Output is correct
64	Correct	148 ms	16384 KB	Output is correct
65	Correct	156 ms	16420 KB	Output is correct
66	Correct	140 ms	16328 KB	Output is correct
67	Correct	144 ms	16368 KB	Output is correct
68	Correct	155 ms	16452 KB	Output is correct
69	Correct	117 ms	12708 KB	Output is correct
70	Correct	0 ms	208 KB	Output is correct

답안 #478190

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