#include <bits/stdc++.h>
using namespace std;
const int N = 3e5 + 3;
int n;
long long a[N];
vector<long long> s;
map<long long,int> ma;
long long fa[N],fb[N];
long long ans;
void update(long long (&a)[N],int idx,long long val){ idx++; while(idx<N) a[idx]+=val,idx+=(idx & -idx); }
long long read(long long (&a)[N],int idx){ idx++; long long val = 0; while(idx>0) val+=a[idx],idx-=(idx & -idx); return val; }
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> n;
for(int i = 1;i <= n;i++) cin >> a[i],s.push_back(a[i]);
sort(s.begin(),s.end());
int id = 0;
for(int x : s) if(!ma[x]) ma[x] = ++id;
for(int i = 1;i <= n;i++) a[i] = ma[a[i]];
for(int i = 1;i <= n;i++)
{
ans+=read(fb,N-2)-read(fb,a[i]);
update(fb,a[i],read(fa,a[i]-1));
update(fa,a[i],1);
}
cout << ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
512 KB |
Output is correct |
2 |
Correct |
443 ms |
47872 KB |
Output is correct |
3 |
Correct |
435 ms |
47868 KB |
Output is correct |
4 |
Correct |
406 ms |
47988 KB |
Output is correct |
5 |
Correct |
424 ms |
47804 KB |
Output is correct |
6 |
Correct |
412 ms |
47968 KB |
Output is correct |
7 |
Correct |
412 ms |
47840 KB |
Output is correct |
8 |
Correct |
433 ms |
47892 KB |
Output is correct |
9 |
Correct |
255 ms |
29664 KB |
Output is correct |
10 |
Correct |
254 ms |
29664 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
69 ms |
6644 KB |
Output is correct |
2 |
Correct |
63 ms |
7284 KB |
Output is correct |
3 |
Correct |
63 ms |
7284 KB |
Output is correct |
4 |
Correct |
60 ms |
7284 KB |
Output is correct |
5 |
Correct |
60 ms |
7276 KB |
Output is correct |
6 |
Correct |
63 ms |
7284 KB |
Output is correct |
7 |
Correct |
58 ms |
7276 KB |
Output is correct |
8 |
Correct |
57 ms |
7284 KB |
Output is correct |
9 |
Correct |
57 ms |
7284 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
69 ms |
6644 KB |
Output is correct |
2 |
Correct |
63 ms |
7284 KB |
Output is correct |
3 |
Correct |
63 ms |
7284 KB |
Output is correct |
4 |
Correct |
60 ms |
7284 KB |
Output is correct |
5 |
Correct |
60 ms |
7276 KB |
Output is correct |
6 |
Correct |
63 ms |
7284 KB |
Output is correct |
7 |
Correct |
58 ms |
7276 KB |
Output is correct |
8 |
Correct |
57 ms |
7284 KB |
Output is correct |
9 |
Correct |
57 ms |
7284 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
11 |
Correct |
82 ms |
7540 KB |
Output is correct |
12 |
Correct |
83 ms |
7532 KB |
Output is correct |
13 |
Correct |
85 ms |
7532 KB |
Output is correct |
14 |
Correct |
87 ms |
7540 KB |
Output is correct |
15 |
Correct |
82 ms |
7540 KB |
Output is correct |
16 |
Correct |
80 ms |
7540 KB |
Output is correct |
17 |
Correct |
79 ms |
7540 KB |
Output is correct |
18 |
Correct |
59 ms |
7540 KB |
Output is correct |
19 |
Correct |
65 ms |
7540 KB |
Output is correct |
20 |
Correct |
5 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
512 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
512 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
69 ms |
6644 KB |
Output is correct |
2 |
Correct |
63 ms |
7284 KB |
Output is correct |
3 |
Correct |
63 ms |
7284 KB |
Output is correct |
4 |
Correct |
60 ms |
7284 KB |
Output is correct |
5 |
Correct |
60 ms |
7276 KB |
Output is correct |
6 |
Correct |
63 ms |
7284 KB |
Output is correct |
7 |
Correct |
58 ms |
7276 KB |
Output is correct |
8 |
Correct |
57 ms |
7284 KB |
Output is correct |
9 |
Correct |
57 ms |
7284 KB |
Output is correct |
10 |
Correct |
4 ms |
384 KB |
Output is correct |
11 |
Correct |
82 ms |
7540 KB |
Output is correct |
12 |
Correct |
83 ms |
7532 KB |
Output is correct |
13 |
Correct |
85 ms |
7532 KB |
Output is correct |
14 |
Correct |
87 ms |
7540 KB |
Output is correct |
15 |
Correct |
82 ms |
7540 KB |
Output is correct |
16 |
Correct |
80 ms |
7540 KB |
Output is correct |
17 |
Correct |
79 ms |
7540 KB |
Output is correct |
18 |
Correct |
59 ms |
7540 KB |
Output is correct |
19 |
Correct |
65 ms |
7540 KB |
Output is correct |
20 |
Correct |
5 ms |
384 KB |
Output is correct |
21 |
Correct |
255 ms |
14280 KB |
Output is correct |
22 |
Correct |
268 ms |
14412 KB |
Output is correct |
23 |
Correct |
248 ms |
14304 KB |
Output is correct |
24 |
Correct |
246 ms |
14176 KB |
Output is correct |
25 |
Correct |
248 ms |
14304 KB |
Output is correct |
26 |
Correct |
253 ms |
14304 KB |
Output is correct |
27 |
Correct |
260 ms |
14304 KB |
Output is correct |
28 |
Correct |
145 ms |
14304 KB |
Output is correct |
29 |
Correct |
148 ms |
14176 KB |
Output is correct |
30 |
Correct |
5 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
512 KB |
Output is correct |
2 |
Correct |
443 ms |
47872 KB |
Output is correct |
3 |
Correct |
435 ms |
47868 KB |
Output is correct |
4 |
Correct |
406 ms |
47988 KB |
Output is correct |
5 |
Correct |
424 ms |
47804 KB |
Output is correct |
6 |
Correct |
412 ms |
47968 KB |
Output is correct |
7 |
Correct |
412 ms |
47840 KB |
Output is correct |
8 |
Correct |
433 ms |
47892 KB |
Output is correct |
9 |
Correct |
255 ms |
29664 KB |
Output is correct |
10 |
Correct |
254 ms |
29664 KB |
Output is correct |
11 |
Correct |
69 ms |
6644 KB |
Output is correct |
12 |
Correct |
63 ms |
7284 KB |
Output is correct |
13 |
Correct |
63 ms |
7284 KB |
Output is correct |
14 |
Correct |
60 ms |
7284 KB |
Output is correct |
15 |
Correct |
60 ms |
7276 KB |
Output is correct |
16 |
Correct |
63 ms |
7284 KB |
Output is correct |
17 |
Correct |
58 ms |
7276 KB |
Output is correct |
18 |
Correct |
57 ms |
7284 KB |
Output is correct |
19 |
Correct |
57 ms |
7284 KB |
Output is correct |
20 |
Correct |
4 ms |
384 KB |
Output is correct |
21 |
Correct |
82 ms |
7540 KB |
Output is correct |
22 |
Correct |
83 ms |
7532 KB |
Output is correct |
23 |
Correct |
85 ms |
7532 KB |
Output is correct |
24 |
Correct |
87 ms |
7540 KB |
Output is correct |
25 |
Correct |
82 ms |
7540 KB |
Output is correct |
26 |
Correct |
80 ms |
7540 KB |
Output is correct |
27 |
Correct |
79 ms |
7540 KB |
Output is correct |
28 |
Correct |
59 ms |
7540 KB |
Output is correct |
29 |
Correct |
65 ms |
7540 KB |
Output is correct |
30 |
Correct |
5 ms |
384 KB |
Output is correct |
31 |
Incorrect |
5 ms |
512 KB |
Output isn't correct |
32 |
Halted |
0 ms |
0 KB |
- |