#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++)
{
assert(a[i]<N);
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 |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
417 ms |
44000 KB |
Output is correct |
3 |
Correct |
424 ms |
44300 KB |
Output is correct |
4 |
Correct |
406 ms |
44000 KB |
Output is correct |
5 |
Correct |
435 ms |
44128 KB |
Output is correct |
6 |
Correct |
411 ms |
43996 KB |
Output is correct |
7 |
Correct |
408 ms |
44000 KB |
Output is correct |
8 |
Correct |
415 ms |
44000 KB |
Output is correct |
9 |
Correct |
243 ms |
25952 KB |
Output is correct |
10 |
Correct |
245 ms |
25952 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
64 ms |
7276 KB |
Output is correct |
2 |
Correct |
62 ms |
7412 KB |
Output is correct |
3 |
Correct |
60 ms |
7284 KB |
Output is correct |
4 |
Correct |
61 ms |
7284 KB |
Output is correct |
5 |
Correct |
61 ms |
7284 KB |
Output is correct |
6 |
Correct |
64 ms |
7284 KB |
Output is correct |
7 |
Correct |
68 ms |
7276 KB |
Output is correct |
8 |
Correct |
56 ms |
7196 KB |
Output is correct |
9 |
Correct |
56 ms |
7284 KB |
Output is correct |
10 |
Correct |
5 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
64 ms |
7276 KB |
Output is correct |
2 |
Correct |
62 ms |
7412 KB |
Output is correct |
3 |
Correct |
60 ms |
7284 KB |
Output is correct |
4 |
Correct |
61 ms |
7284 KB |
Output is correct |
5 |
Correct |
61 ms |
7284 KB |
Output is correct |
6 |
Correct |
64 ms |
7284 KB |
Output is correct |
7 |
Correct |
68 ms |
7276 KB |
Output is correct |
8 |
Correct |
56 ms |
7196 KB |
Output is correct |
9 |
Correct |
56 ms |
7284 KB |
Output is correct |
10 |
Correct |
5 ms |
384 KB |
Output is correct |
11 |
Correct |
83 ms |
7540 KB |
Output is correct |
12 |
Correct |
86 ms |
7532 KB |
Output is correct |
13 |
Correct |
83 ms |
7540 KB |
Output is correct |
14 |
Correct |
86 ms |
7540 KB |
Output is correct |
15 |
Correct |
81 ms |
7540 KB |
Output is correct |
16 |
Correct |
81 ms |
7540 KB |
Output is correct |
17 |
Correct |
85 ms |
7540 KB |
Output is correct |
18 |
Correct |
61 ms |
7528 KB |
Output is correct |
19 |
Correct |
61 ms |
7532 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 |
64 ms |
7276 KB |
Output is correct |
2 |
Correct |
62 ms |
7412 KB |
Output is correct |
3 |
Correct |
60 ms |
7284 KB |
Output is correct |
4 |
Correct |
61 ms |
7284 KB |
Output is correct |
5 |
Correct |
61 ms |
7284 KB |
Output is correct |
6 |
Correct |
64 ms |
7284 KB |
Output is correct |
7 |
Correct |
68 ms |
7276 KB |
Output is correct |
8 |
Correct |
56 ms |
7196 KB |
Output is correct |
9 |
Correct |
56 ms |
7284 KB |
Output is correct |
10 |
Correct |
5 ms |
384 KB |
Output is correct |
11 |
Correct |
83 ms |
7540 KB |
Output is correct |
12 |
Correct |
86 ms |
7532 KB |
Output is correct |
13 |
Correct |
83 ms |
7540 KB |
Output is correct |
14 |
Correct |
86 ms |
7540 KB |
Output is correct |
15 |
Correct |
81 ms |
7540 KB |
Output is correct |
16 |
Correct |
81 ms |
7540 KB |
Output is correct |
17 |
Correct |
85 ms |
7540 KB |
Output is correct |
18 |
Correct |
61 ms |
7528 KB |
Output is correct |
19 |
Correct |
61 ms |
7532 KB |
Output is correct |
20 |
Correct |
5 ms |
384 KB |
Output is correct |
21 |
Correct |
261 ms |
13352 KB |
Output is correct |
22 |
Correct |
272 ms |
13408 KB |
Output is correct |
23 |
Correct |
249 ms |
13408 KB |
Output is correct |
24 |
Correct |
272 ms |
13408 KB |
Output is correct |
25 |
Correct |
260 ms |
13536 KB |
Output is correct |
26 |
Correct |
267 ms |
13408 KB |
Output is correct |
27 |
Correct |
263 ms |
13412 KB |
Output is correct |
28 |
Correct |
143 ms |
13384 KB |
Output is correct |
29 |
Correct |
155 ms |
13408 KB |
Output is correct |
30 |
Correct |
5 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
417 ms |
44000 KB |
Output is correct |
3 |
Correct |
424 ms |
44300 KB |
Output is correct |
4 |
Correct |
406 ms |
44000 KB |
Output is correct |
5 |
Correct |
435 ms |
44128 KB |
Output is correct |
6 |
Correct |
411 ms |
43996 KB |
Output is correct |
7 |
Correct |
408 ms |
44000 KB |
Output is correct |
8 |
Correct |
415 ms |
44000 KB |
Output is correct |
9 |
Correct |
243 ms |
25952 KB |
Output is correct |
10 |
Correct |
245 ms |
25952 KB |
Output is correct |
11 |
Correct |
64 ms |
7276 KB |
Output is correct |
12 |
Correct |
62 ms |
7412 KB |
Output is correct |
13 |
Correct |
60 ms |
7284 KB |
Output is correct |
14 |
Correct |
61 ms |
7284 KB |
Output is correct |
15 |
Correct |
61 ms |
7284 KB |
Output is correct |
16 |
Correct |
64 ms |
7284 KB |
Output is correct |
17 |
Correct |
68 ms |
7276 KB |
Output is correct |
18 |
Correct |
56 ms |
7196 KB |
Output is correct |
19 |
Correct |
56 ms |
7284 KB |
Output is correct |
20 |
Correct |
5 ms |
384 KB |
Output is correct |
21 |
Correct |
83 ms |
7540 KB |
Output is correct |
22 |
Correct |
86 ms |
7532 KB |
Output is correct |
23 |
Correct |
83 ms |
7540 KB |
Output is correct |
24 |
Correct |
86 ms |
7540 KB |
Output is correct |
25 |
Correct |
81 ms |
7540 KB |
Output is correct |
26 |
Correct |
81 ms |
7540 KB |
Output is correct |
27 |
Correct |
85 ms |
7540 KB |
Output is correct |
28 |
Correct |
61 ms |
7528 KB |
Output is correct |
29 |
Correct |
61 ms |
7532 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 |
- |