oj.uz

Submission #209413

# Submission time Handle Problem Language Result Execution time Memory
209413 2020-03-14T07:18:33 Z model_code Mountains (NOI20_mountains) C++17
100 / 100
 111 ms 6264 KB 
#include <bits/stdc++.h>
using namespace std;
constexpr int MAXN=300'000;
int n;
struct {
    int data_[MAXN+1];
    int query(int index){
        int ret=0;
        for(;index>0;index-=(index&-index)){
            ret+=data_[index];
        }
        return ret;
    }
    void update(int index){
        for(++index;index<=n;index+=(index&-index)){
            ++data_[index];
        }
    }
} fw;
pair<long long, int> arr[MAXN];
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin>>n;
    assert(3<=n&&n<=MAXN);
    for(int i=0;i<n;++i){
        cin>>arr[i].first;
        assert(0<=arr[i].first&&arr[i].first<=1'000'000'000'000'000'000ll);
        arr[i].second=i;
    }
    sort(arr,arr+n,[](const pair<long long, int>& a, const pair<long long, int>& b){
        return a.first<b.first;
    });
    long long ans=0;
    for(int i=0;i<n;){
        const long long val=arr[i].first;
        int j;
        for(j=i;j<n&&arr[j].first==val;++j){
            const int idx=arr[j].second;
            const int tmp=fw.query(idx);
            ans+=tmp*static_cast<long long>(i-tmp);
        }
        for(;i<j;++i){
            const int idx=arr[i].second;
            fw.update(idx);
        }
    }
    cout<<ans<<'\n';
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 252 KB Output is correct
2 Correct 87 ms 6264 KB Output is correct
3 Correct 87 ms 6244 KB Output is correct
4 Correct 90 ms 6264 KB Output is correct
5 Correct 86 ms 6264 KB Output is correct
6 Correct 84 ms 6264 KB Output is correct
7 Correct 89 ms 6264 KB Output is correct
8 Correct 85 ms 6136 KB Output is correct
9 Correct 89 ms 6264 KB Output is correct
10 Correct 88 ms 6264 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 6136 KB Output is correct
2 Correct 45 ms 6264 KB Output is correct
3 Correct 43 ms 6136 KB Output is correct
4 Correct 43 ms 6136 KB Output is correct
5 Correct 44 ms 6136 KB Output is correct
6 Correct 44 ms 6136 KB Output is correct
7 Correct 43 ms 6136 KB Output is correct
8 Correct 41 ms 6136 KB Output is correct
9 Correct 50 ms 6136 KB Output is correct
10 Correct 5 ms 376 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 6136 KB Output is correct
2 Correct 45 ms 6264 KB Output is correct
3 Correct 43 ms 6136 KB Output is correct
4 Correct 43 ms 6136 KB Output is correct
5 Correct 44 ms 6136 KB Output is correct
6 Correct 44 ms 6136 KB Output is correct
7 Correct 43 ms 6136 KB Output is correct
8 Correct 41 ms 6136 KB Output is correct
9 Correct 50 ms 6136 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 53 ms 6136 KB Output is correct
12 Correct 52 ms 6264 KB Output is correct
13 Correct 54 ms 6136 KB Output is correct
14 Correct 54 ms 6264 KB Output is correct
15 Correct 55 ms 6136 KB Output is correct
16 Correct 53 ms 6136 KB Output is correct
17 Correct 54 ms 6228 KB Output is correct
18 Correct 42 ms 6264 KB Output is correct
19 Correct 41 ms 6136 KB Output is correct
20 Correct 5 ms 376 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 8 ms 504 KB Output is correct
12 Correct 7 ms 504 KB Output is correct
13 Correct 8 ms 504 KB Output is correct
14 Correct 8 ms 504 KB Output is correct
15 Correct 8 ms 504 KB Output is correct
16 Correct 8 ms 504 KB Output is correct
17 Correct 8 ms 504 KB Output is correct
18 Correct 8 ms 504 KB Output is correct
19 Correct 6 ms 504 KB Output is correct
20 Correct 5 ms 376 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 6136 KB Output is correct
2 Correct 45 ms 6264 KB Output is correct
3 Correct 43 ms 6136 KB Output is correct
4 Correct 43 ms 6136 KB Output is correct
5 Correct 44 ms 6136 KB Output is correct
6 Correct 44 ms 6136 KB Output is correct
7 Correct 43 ms 6136 KB Output is correct
8 Correct 41 ms 6136 KB Output is correct
9 Correct 50 ms 6136 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 53 ms 6136 KB Output is correct
12 Correct 52 ms 6264 KB Output is correct
13 Correct 54 ms 6136 KB Output is correct
14 Correct 54 ms 6264 KB Output is correct
15 Correct 55 ms 6136 KB Output is correct
16 Correct 53 ms 6136 KB Output is correct
17 Correct 54 ms 6228 KB Output is correct
18 Correct 42 ms 6264 KB Output is correct
19 Correct 41 ms 6136 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 82 ms 6136 KB Output is correct
22 Correct 76 ms 6136 KB Output is correct
23 Correct 77 ms 6136 KB Output is correct
24 Correct 80 ms 6136 KB Output is correct
25 Correct 79 ms 6136 KB Output is correct
26 Correct 82 ms 6136 KB Output is correct
27 Correct 77 ms 6136 KB Output is correct
28 Correct 60 ms 6136 KB Output is correct
29 Correct 61 ms 6140 KB Output is correct
30 Correct 5 ms 376 KB Output is correct

Subtask #7
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 252 KB Output is correct
2 Correct 87 ms 6264 KB Output is correct
3 Correct 87 ms 6244 KB Output is correct
4 Correct 90 ms 6264 KB Output is correct
5 Correct 86 ms 6264 KB Output is correct
6 Correct 84 ms 6264 KB Output is correct
7 Correct 89 ms 6264 KB Output is correct
8 Correct 85 ms 6136 KB Output is correct
9 Correct 89 ms 6264 KB Output is correct
10 Correct 88 ms 6264 KB Output is correct
11 Correct 44 ms 6136 KB Output is correct
12 Correct 45 ms 6264 KB Output is correct
13 Correct 43 ms 6136 KB Output is correct
14 Correct 43 ms 6136 KB Output is correct
15 Correct 44 ms 6136 KB Output is correct
16 Correct 44 ms 6136 KB Output is correct
17 Correct 43 ms 6136 KB Output is correct
18 Correct 41 ms 6136 KB Output is correct
19 Correct 50 ms 6136 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 53 ms 6136 KB Output is correct
22 Correct 52 ms 6264 KB Output is correct
23 Correct 54 ms 6136 KB Output is correct
24 Correct 54 ms 6264 KB Output is correct
25 Correct 55 ms 6136 KB Output is correct
26 Correct 53 ms 6136 KB Output is correct
27 Correct 54 ms 6228 KB Output is correct
28 Correct 42 ms 6264 KB Output is correct
29 Correct 41 ms 6136 KB Output is correct
30 Correct 5 ms 376 KB Output is correct
31 Correct 5 ms 376 KB Output is correct
32 Correct 5 ms 376 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 376 KB Output is correct
35 Correct 5 ms 376 KB Output is correct
36 Correct 5 ms 376 KB Output is correct
37 Correct 5 ms 376 KB Output is correct
38 Correct 5 ms 376 KB Output is correct
39 Correct 5 ms 376 KB Output is correct
40 Correct 5 ms 376 KB Output is correct
41 Correct 8 ms 504 KB Output is correct
42 Correct 7 ms 504 KB Output is correct
43 Correct 8 ms 504 KB Output is correct
44 Correct 8 ms 504 KB Output is correct
45 Correct 8 ms 504 KB Output is correct
46 Correct 8 ms 504 KB Output is correct
47 Correct 8 ms 504 KB Output is correct
48 Correct 8 ms 504 KB Output is correct
49 Correct 6 ms 504 KB Output is correct
50 Correct 5 ms 376 KB Output is correct
51 Correct 82 ms 6136 KB Output is correct
52 Correct 76 ms 6136 KB Output is correct
53 Correct 77 ms 6136 KB Output is correct
54 Correct 80 ms 6136 KB Output is correct
55 Correct 79 ms 6136 KB Output is correct
56 Correct 82 ms 6136 KB Output is correct
57 Correct 77 ms 6136 KB Output is correct
58 Correct 60 ms 6136 KB Output is correct
59 Correct 61 ms 6140 KB Output is correct
60 Correct 5 ms 376 KB Output is correct
61 Correct 108 ms 6136 KB Output is correct
62 Correct 109 ms 6136 KB Output is correct
63 Correct 109 ms 6136 KB Output is correct
64 Correct 108 ms 6136 KB Output is correct
65 Correct 111 ms 6136 KB Output is correct
66 Correct 111 ms 6136 KB Output is correct
67 Correct 107 ms 6136 KB Output is correct
68 Correct 111 ms 6136 KB Output is correct
69 Correct 82 ms 6136 KB Output is correct
70 Correct 5 ms 376 KB Output is correct