//Never stop trying
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
template <typename T>
using ordered_set=tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
//s.order_of_key(), *s.find_by_order()
using namespace std;
#define boost ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
typedef string str;
typedef long long ll;
#define int ll
typedef double db;
typedef long double ld;
typedef pair<int,int> pi;
#define fi first
#define se second
typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<str> vs;
typedef vector<pi> vpi;
#define pb push_back
#define eb emplace_back
#define pf push_front
#define lb lower_bound
#define ub upper_bound
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define endl "\n"
const int MOD = 1e9+7; //998244353
const ll INF = 1e18;
const int nx[4]={0,0,1,-1}, ny[4]={1,-1,0,0}; //right left down up
const int MX=3e5+70;
int N;
int t[MX];
int bit[MX];
int r[MX],l[MX];
int lsb(int i){return i&-i;}
void update(int idx){
while(idx<MX){
bit[idx]++;
idx+=lsb(idx);
}
}
int getSum(int idx){
int ans=0;
while(idx>0){
ans+=bit[idx];
idx-=lsb(idx);
}
return ans;
}
int32_t main(){
boost;
for(int i=0; i<MX; i++) r[i]=l[i]=bit[i]=0;
cin>>N;
vpi vec;
for(int i=0; i<N; i++){
cin>>t[i];
vec.pb({t[i],i});
}sort(all(vec));
int nb=0;
for(int i=0; i<N; i++){
if(i==0||vec[i-1].fi<vec[i].fi) nb++;
t[vec[i].se]=nb;
}
for(int i=0; i<N; i++){
l[i]=getSum(t[i]-1);
update(t[i]);
}
for(int i=0; i<MX; i++) bit[i]=0;
for(int i=N-1; i>=0; i--){
r[i]=getSum(t[i]-1);
update(t[i]);
}
int res=0;
for(int i=0; i<N; i++) res+=r[i]*l[i];
cout << res << endl;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
7424 KB |
Output is correct |
2 |
Correct |
102 ms |
17760 KB |
Output is correct |
3 |
Correct |
111 ms |
22752 KB |
Output is correct |
4 |
Correct |
105 ms |
22752 KB |
Output is correct |
5 |
Correct |
103 ms |
22752 KB |
Output is correct |
6 |
Correct |
107 ms |
22748 KB |
Output is correct |
7 |
Correct |
108 ms |
22752 KB |
Output is correct |
8 |
Correct |
112 ms |
22752 KB |
Output is correct |
9 |
Correct |
107 ms |
22756 KB |
Output is correct |
10 |
Correct |
112 ms |
22880 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
95 ms |
17832 KB |
Output is correct |
2 |
Correct |
110 ms |
17768 KB |
Output is correct |
3 |
Correct |
99 ms |
17776 KB |
Output is correct |
4 |
Correct |
95 ms |
17776 KB |
Output is correct |
5 |
Correct |
101 ms |
17776 KB |
Output is correct |
6 |
Correct |
107 ms |
17648 KB |
Output is correct |
7 |
Correct |
104 ms |
17776 KB |
Output is correct |
8 |
Correct |
78 ms |
17896 KB |
Output is correct |
9 |
Correct |
75 ms |
17776 KB |
Output is correct |
10 |
Correct |
9 ms |
7424 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
95 ms |
17832 KB |
Output is correct |
2 |
Correct |
110 ms |
17768 KB |
Output is correct |
3 |
Correct |
99 ms |
17776 KB |
Output is correct |
4 |
Correct |
95 ms |
17776 KB |
Output is correct |
5 |
Correct |
101 ms |
17776 KB |
Output is correct |
6 |
Correct |
107 ms |
17648 KB |
Output is correct |
7 |
Correct |
104 ms |
17776 KB |
Output is correct |
8 |
Correct |
78 ms |
17896 KB |
Output is correct |
9 |
Correct |
75 ms |
17776 KB |
Output is correct |
10 |
Correct |
9 ms |
7424 KB |
Output is correct |
11 |
Correct |
98 ms |
17768 KB |
Output is correct |
12 |
Correct |
99 ms |
17768 KB |
Output is correct |
13 |
Correct |
97 ms |
17768 KB |
Output is correct |
14 |
Correct |
98 ms |
17768 KB |
Output is correct |
15 |
Correct |
100 ms |
17776 KB |
Output is correct |
16 |
Correct |
102 ms |
17776 KB |
Output is correct |
17 |
Correct |
98 ms |
17772 KB |
Output is correct |
18 |
Correct |
72 ms |
17768 KB |
Output is correct |
19 |
Correct |
72 ms |
17768 KB |
Output is correct |
20 |
Correct |
8 ms |
7424 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
7424 KB |
Output is correct |
2 |
Correct |
9 ms |
7424 KB |
Output is correct |
3 |
Correct |
8 ms |
7424 KB |
Output is correct |
4 |
Correct |
9 ms |
7424 KB |
Output is correct |
5 |
Correct |
8 ms |
7424 KB |
Output is correct |
6 |
Correct |
9 ms |
7424 KB |
Output is correct |
7 |
Correct |
9 ms |
7424 KB |
Output is correct |
8 |
Correct |
9 ms |
7552 KB |
Output is correct |
9 |
Correct |
9 ms |
7424 KB |
Output is correct |
10 |
Correct |
8 ms |
7424 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
7424 KB |
Output is correct |
2 |
Correct |
9 ms |
7424 KB |
Output is correct |
3 |
Correct |
8 ms |
7424 KB |
Output is correct |
4 |
Correct |
9 ms |
7424 KB |
Output is correct |
5 |
Correct |
8 ms |
7424 KB |
Output is correct |
6 |
Correct |
9 ms |
7424 KB |
Output is correct |
7 |
Correct |
9 ms |
7424 KB |
Output is correct |
8 |
Correct |
9 ms |
7552 KB |
Output is correct |
9 |
Correct |
9 ms |
7424 KB |
Output is correct |
10 |
Correct |
8 ms |
7424 KB |
Output is correct |
11 |
Correct |
13 ms |
7808 KB |
Output is correct |
12 |
Correct |
13 ms |
7808 KB |
Output is correct |
13 |
Correct |
13 ms |
7808 KB |
Output is correct |
14 |
Correct |
13 ms |
7808 KB |
Output is correct |
15 |
Correct |
12 ms |
7808 KB |
Output is correct |
16 |
Correct |
14 ms |
7936 KB |
Output is correct |
17 |
Correct |
13 ms |
7808 KB |
Output is correct |
18 |
Correct |
12 ms |
7936 KB |
Output is correct |
19 |
Correct |
11 ms |
7808 KB |
Output is correct |
20 |
Correct |
9 ms |
7424 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
95 ms |
17832 KB |
Output is correct |
2 |
Correct |
110 ms |
17768 KB |
Output is correct |
3 |
Correct |
99 ms |
17776 KB |
Output is correct |
4 |
Correct |
95 ms |
17776 KB |
Output is correct |
5 |
Correct |
101 ms |
17776 KB |
Output is correct |
6 |
Correct |
107 ms |
17648 KB |
Output is correct |
7 |
Correct |
104 ms |
17776 KB |
Output is correct |
8 |
Correct |
78 ms |
17896 KB |
Output is correct |
9 |
Correct |
75 ms |
17776 KB |
Output is correct |
10 |
Correct |
9 ms |
7424 KB |
Output is correct |
11 |
Correct |
98 ms |
17768 KB |
Output is correct |
12 |
Correct |
99 ms |
17768 KB |
Output is correct |
13 |
Correct |
97 ms |
17768 KB |
Output is correct |
14 |
Correct |
98 ms |
17768 KB |
Output is correct |
15 |
Correct |
100 ms |
17776 KB |
Output is correct |
16 |
Correct |
102 ms |
17776 KB |
Output is correct |
17 |
Correct |
98 ms |
17772 KB |
Output is correct |
18 |
Correct |
72 ms |
17768 KB |
Output is correct |
19 |
Correct |
72 ms |
17768 KB |
Output is correct |
20 |
Correct |
8 ms |
7424 KB |
Output is correct |
21 |
Correct |
123 ms |
17764 KB |
Output is correct |
22 |
Correct |
124 ms |
19428 KB |
Output is correct |
23 |
Correct |
124 ms |
19428 KB |
Output is correct |
24 |
Correct |
118 ms |
19428 KB |
Output is correct |
25 |
Correct |
120 ms |
19432 KB |
Output is correct |
26 |
Correct |
121 ms |
19424 KB |
Output is correct |
27 |
Correct |
120 ms |
19432 KB |
Output is correct |
28 |
Correct |
79 ms |
19420 KB |
Output is correct |
29 |
Correct |
84 ms |
19432 KB |
Output is correct |
30 |
Correct |
9 ms |
7424 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
7424 KB |
Output is correct |
2 |
Correct |
102 ms |
17760 KB |
Output is correct |
3 |
Correct |
111 ms |
22752 KB |
Output is correct |
4 |
Correct |
105 ms |
22752 KB |
Output is correct |
5 |
Correct |
103 ms |
22752 KB |
Output is correct |
6 |
Correct |
107 ms |
22748 KB |
Output is correct |
7 |
Correct |
108 ms |
22752 KB |
Output is correct |
8 |
Correct |
112 ms |
22752 KB |
Output is correct |
9 |
Correct |
107 ms |
22756 KB |
Output is correct |
10 |
Correct |
112 ms |
22880 KB |
Output is correct |
11 |
Correct |
95 ms |
17832 KB |
Output is correct |
12 |
Correct |
110 ms |
17768 KB |
Output is correct |
13 |
Correct |
99 ms |
17776 KB |
Output is correct |
14 |
Correct |
95 ms |
17776 KB |
Output is correct |
15 |
Correct |
101 ms |
17776 KB |
Output is correct |
16 |
Correct |
107 ms |
17648 KB |
Output is correct |
17 |
Correct |
104 ms |
17776 KB |
Output is correct |
18 |
Correct |
78 ms |
17896 KB |
Output is correct |
19 |
Correct |
75 ms |
17776 KB |
Output is correct |
20 |
Correct |
9 ms |
7424 KB |
Output is correct |
21 |
Correct |
98 ms |
17768 KB |
Output is correct |
22 |
Correct |
99 ms |
17768 KB |
Output is correct |
23 |
Correct |
97 ms |
17768 KB |
Output is correct |
24 |
Correct |
98 ms |
17768 KB |
Output is correct |
25 |
Correct |
100 ms |
17776 KB |
Output is correct |
26 |
Correct |
102 ms |
17776 KB |
Output is correct |
27 |
Correct |
98 ms |
17772 KB |
Output is correct |
28 |
Correct |
72 ms |
17768 KB |
Output is correct |
29 |
Correct |
72 ms |
17768 KB |
Output is correct |
30 |
Correct |
8 ms |
7424 KB |
Output is correct |
31 |
Correct |
9 ms |
7424 KB |
Output is correct |
32 |
Correct |
9 ms |
7424 KB |
Output is correct |
33 |
Correct |
8 ms |
7424 KB |
Output is correct |
34 |
Correct |
9 ms |
7424 KB |
Output is correct |
35 |
Correct |
8 ms |
7424 KB |
Output is correct |
36 |
Correct |
9 ms |
7424 KB |
Output is correct |
37 |
Correct |
9 ms |
7424 KB |
Output is correct |
38 |
Correct |
9 ms |
7552 KB |
Output is correct |
39 |
Correct |
9 ms |
7424 KB |
Output is correct |
40 |
Correct |
8 ms |
7424 KB |
Output is correct |
41 |
Correct |
13 ms |
7808 KB |
Output is correct |
42 |
Correct |
13 ms |
7808 KB |
Output is correct |
43 |
Correct |
13 ms |
7808 KB |
Output is correct |
44 |
Correct |
13 ms |
7808 KB |
Output is correct |
45 |
Correct |
12 ms |
7808 KB |
Output is correct |
46 |
Correct |
14 ms |
7936 KB |
Output is correct |
47 |
Correct |
13 ms |
7808 KB |
Output is correct |
48 |
Correct |
12 ms |
7936 KB |
Output is correct |
49 |
Correct |
11 ms |
7808 KB |
Output is correct |
50 |
Correct |
9 ms |
7424 KB |
Output is correct |
51 |
Correct |
123 ms |
17764 KB |
Output is correct |
52 |
Correct |
124 ms |
19428 KB |
Output is correct |
53 |
Correct |
124 ms |
19428 KB |
Output is correct |
54 |
Correct |
118 ms |
19428 KB |
Output is correct |
55 |
Correct |
120 ms |
19432 KB |
Output is correct |
56 |
Correct |
121 ms |
19424 KB |
Output is correct |
57 |
Correct |
120 ms |
19432 KB |
Output is correct |
58 |
Correct |
79 ms |
19420 KB |
Output is correct |
59 |
Correct |
84 ms |
19432 KB |
Output is correct |
60 |
Correct |
9 ms |
7424 KB |
Output is correct |
61 |
Correct |
149 ms |
22748 KB |
Output is correct |
62 |
Correct |
151 ms |
22756 KB |
Output is correct |
63 |
Correct |
148 ms |
22756 KB |
Output is correct |
64 |
Correct |
155 ms |
22752 KB |
Output is correct |
65 |
Correct |
146 ms |
22756 KB |
Output is correct |
66 |
Correct |
153 ms |
22752 KB |
Output is correct |
67 |
Correct |
154 ms |
22756 KB |
Output is correct |
68 |
Correct |
156 ms |
22880 KB |
Output is correct |
69 |
Correct |
123 ms |
19556 KB |
Output is correct |
70 |
Correct |
8 ms |
7424 KB |
Output is correct |