oj.uz

답안 #892915

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
892915 2023-12-26T07:25:34 Z votranngocvy Mountains (NOI20_mountains) C++14
100 / 100
 115 ms 18740 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pii pair<int,int>
#define fi first
#define se second
#define mp make_pair
const int N = 3e5 + 5;
int n,a[N],bit[N],f[N];

void compress() {
    vector<pii>vec;
    for (int i = 1; i <= n; i++) vec.push_back(mp(a[i],i));
    sort(vec.begin(),vec.end());
    a[vec[0].se] = 1;
    for (int i = 1; i < n; i++)
        if (vec[i].fi == vec[i - 1].fi) a[vec[i].se] = a[vec[i - 1].se];
        else a[vec[i].se] = i + 1;
}

void update(int i,int x) {
    for (; i < N; i += i & (-i)) bit[i] += x;
}

int get(int i) {
    int ans = 0;
    for (; i > 0; i -= i & (-i)) ans += bit[i];
    return ans;
}

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) cin >> a[i];
    compress();
    for (int i = 1; i <= n; i++) {
        f[i] = get(a[i] - 1);
        update(a[i],1);
    }
    memset(bit,0,sizeof(bit));
    int ans = 0;
    for (int i = n; i > 0; i--) {
        ans += get(a[i] - 1) * f[i];
        update(a[i],1);
    }
    cout << ans << "\n";
}

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4440 KB Output is correct
2 Correct 64 ms 18552 KB Output is correct
3 Correct 60 ms 18740 KB Output is correct
4 Correct 60 ms 17328 KB Output is correct
5 Correct 63 ms 17736 KB Output is correct
6 Correct 58 ms 18376 KB Output is correct
7 Correct 58 ms 18736 KB Output is correct
8 Correct 59 ms 17512 KB Output is correct
9 Correct 64 ms 17872 KB Output is correct
10 Correct 67 ms 17460 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 77 ms 13000 KB Output is correct
2 Correct 85 ms 13008 KB Output is correct
3 Correct 81 ms 11972 KB Output is correct
4 Correct 79 ms 12744 KB Output is correct
5 Correct 76 ms 12332 KB Output is correct
6 Correct 81 ms 13772 KB Output is correct
7 Correct 81 ms 12228 KB Output is correct
8 Correct 49 ms 14224 KB Output is correct
9 Correct 48 ms 13004 KB Output is correct
10 Correct 1 ms 4856 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 77 ms 13000 KB Output is correct
2 Correct 85 ms 13008 KB Output is correct
3 Correct 81 ms 11972 KB Output is correct
4 Correct 79 ms 12744 KB Output is correct
5 Correct 76 ms 12332 KB Output is correct
6 Correct 81 ms 13772 KB Output is correct
7 Correct 81 ms 12228 KB Output is correct
8 Correct 49 ms 14224 KB Output is correct
9 Correct 48 ms 13004 KB Output is correct
10 Correct 1 ms 4856 KB Output is correct
11 Correct 89 ms 12884 KB Output is correct
12 Correct 93 ms 12488 KB Output is correct
13 Correct 92 ms 13260 KB Output is correct
14 Correct 90 ms 12732 KB Output is correct
15 Correct 77 ms 13008 KB Output is correct
16 Correct 111 ms 13520 KB Output is correct
17 Correct 93 ms 13256 KB Output is correct
18 Correct 38 ms 13264 KB Output is correct
19 Correct 38 ms 13508 KB Output is correct
20 Correct 1 ms 4440 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 2 ms 4444 KB Output is correct
3 Correct 2 ms 4444 KB Output is correct
4 Correct 2 ms 4444 KB Output is correct
5 Correct 2 ms 4444 KB Output is correct
6 Correct 2 ms 4312 KB Output is correct
7 Correct 1 ms 4316 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 2 ms 4444 KB Output is correct
3 Correct 2 ms 4444 KB Output is correct
4 Correct 2 ms 4444 KB Output is correct
5 Correct 2 ms 4444 KB Output is correct
6 Correct 2 ms 4312 KB Output is correct
7 Correct 1 ms 4316 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 4 ms 4672 KB Output is correct
12 Correct 5 ms 4616 KB Output is correct
13 Correct 4 ms 4672 KB Output is correct
14 Correct 4 ms 4672 KB Output is correct
15 Correct 5 ms 4732 KB Output is correct
16 Correct 5 ms 4672 KB Output is correct
17 Correct 4 ms 4672 KB Output is correct
18 Correct 4 ms 4672 KB Output is correct
19 Correct 4 ms 4672 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 77 ms 13000 KB Output is correct
2 Correct 85 ms 13008 KB Output is correct
3 Correct 81 ms 11972 KB Output is correct
4 Correct 79 ms 12744 KB Output is correct
5 Correct 76 ms 12332 KB Output is correct
6 Correct 81 ms 13772 KB Output is correct
7 Correct 81 ms 12228 KB Output is correct
8 Correct 49 ms 14224 KB Output is correct
9 Correct 48 ms 13004 KB Output is correct
10 Correct 1 ms 4856 KB Output is correct
11 Correct 89 ms 12884 KB Output is correct
12 Correct 93 ms 12488 KB Output is correct
13 Correct 92 ms 13260 KB Output is correct
14 Correct 90 ms 12732 KB Output is correct
15 Correct 77 ms 13008 KB Output is correct
16 Correct 111 ms 13520 KB Output is correct
17 Correct 93 ms 13256 KB Output is correct
18 Correct 38 ms 13264 KB Output is correct
19 Correct 38 ms 13508 KB Output is correct
20 Correct 1 ms 4440 KB Output is correct
21 Correct 93 ms 14284 KB Output is correct
22 Correct 85 ms 14000 KB Output is correct
23 Correct 95 ms 15056 KB Output is correct
24 Correct 98 ms 13500 KB Output is correct
25 Correct 96 ms 14788 KB Output is correct
26 Correct 95 ms 14792 KB Output is correct
27 Correct 90 ms 14516 KB Output is correct
28 Correct 49 ms 13296 KB Output is correct
29 Correct 46 ms 14532 KB Output is correct
30 Correct 1 ms 4444 KB Output is correct

Subtask #7
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4440 KB Output is correct
2 Correct 64 ms 18552 KB Output is correct
3 Correct 60 ms 18740 KB Output is correct
4 Correct 60 ms 17328 KB Output is correct
5 Correct 63 ms 17736 KB Output is correct
6 Correct 58 ms 18376 KB Output is correct
7 Correct 58 ms 18736 KB Output is correct
8 Correct 59 ms 17512 KB Output is correct
9 Correct 64 ms 17872 KB Output is correct
10 Correct 67 ms 17460 KB Output is correct
11 Correct 77 ms 13000 KB Output is correct
12 Correct 85 ms 13008 KB Output is correct
13 Correct 81 ms 11972 KB Output is correct
14 Correct 79 ms 12744 KB Output is correct
15 Correct 76 ms 12332 KB Output is correct
16 Correct 81 ms 13772 KB Output is correct
17 Correct 81 ms 12228 KB Output is correct
18 Correct 49 ms 14224 KB Output is correct
19 Correct 48 ms 13004 KB Output is correct
20 Correct 1 ms 4856 KB Output is correct
21 Correct 89 ms 12884 KB Output is correct
22 Correct 93 ms 12488 KB Output is correct
23 Correct 92 ms 13260 KB Output is correct
24 Correct 90 ms 12732 KB Output is correct
25 Correct 77 ms 13008 KB Output is correct
26 Correct 111 ms 13520 KB Output is correct
27 Correct 93 ms 13256 KB Output is correct
28 Correct 38 ms 13264 KB Output is correct
29 Correct 38 ms 13508 KB Output is correct
30 Correct 1 ms 4440 KB Output is correct
31 Correct 1 ms 4444 KB Output is correct
32 Correct 2 ms 4444 KB Output is correct
33 Correct 2 ms 4444 KB Output is correct
34 Correct 2 ms 4444 KB Output is correct
35 Correct 2 ms 4444 KB Output is correct
36 Correct 2 ms 4312 KB Output is correct
37 Correct 1 ms 4316 KB Output is correct
38 Correct 1 ms 4444 KB Output is correct
39 Correct 1 ms 4444 KB Output is correct
40 Correct 1 ms 4444 KB Output is correct
41 Correct 4 ms 4672 KB Output is correct
42 Correct 5 ms 4616 KB Output is correct
43 Correct 4 ms 4672 KB Output is correct
44 Correct 4 ms 4672 KB Output is correct
45 Correct 5 ms 4732 KB Output is correct
46 Correct 5 ms 4672 KB Output is correct
47 Correct 4 ms 4672 KB Output is correct
48 Correct 4 ms 4672 KB Output is correct
49 Correct 4 ms 4672 KB Output is correct
50 Correct 1 ms 4444 KB Output is correct
51 Correct 93 ms 14284 KB Output is correct
52 Correct 85 ms 14000 KB Output is correct
53 Correct 95 ms 15056 KB Output is correct
54 Correct 98 ms 13500 KB Output is correct
55 Correct 96 ms 14788 KB Output is correct
56 Correct 95 ms 14792 KB Output is correct
57 Correct 90 ms 14516 KB Output is correct
58 Correct 49 ms 13296 KB Output is correct
59 Correct 46 ms 14532 KB Output is correct
60 Correct 1 ms 4444 KB Output is correct
61 Correct 105 ms 17136 KB Output is correct
62 Correct 106 ms 18676 KB Output is correct
63 Correct 114 ms 18732 KB Output is correct
64 Correct 107 ms 18628 KB Output is correct
65 Correct 96 ms 18120 KB Output is correct
66 Correct 111 ms 18376 KB Output is correct
67 Correct 115 ms 17616 KB Output is correct
68 Correct 101 ms 17092 KB Output is correct
69 Correct 92 ms 13240 KB Output is correct
70 Correct 1 ms 4444 KB Output is correct