#include <bits/stdc++.h>
using namespace std;
priority_queue<pair<long long, int> >pq;
long long ft[300005];
long long in1[300005];
long long in2[300005];
int cnt2 = 1;
int ls(int x){
return x & -x;
}
int query(int x){
long long sum = 0;
for(;x;x -= ls(x)){
sum += ft[x];
}
return sum;
}
void update(int x, int v){
for(;x<=cnt2;x += ls(x)){
ft[x] += v;
}
}
int main(){
int n;
cin >> n;
long long cnt = 0;
cnt2 = 1;
pair<long long, int> d[n+1];
long long c[n+1];
for(int i=1;i<=n;i++){
cin >> c[i];
}
for(int i = 1; i <= n; i++){
d[i].first = c[i];
d[i].second = i;
}
sort(d + 1, d + n + 1);
for(int i = 1; i <= n; i++){
if (i > 1 && d[i].first != d[i-1].first) cnt2++;
c[d[i].second] = cnt2;
}
for(int i=1;i<=n;i++){
in1[i] = query(c[i] - 1);
update(c[i], 1);
}
fill(ft, ft + n + 1, 0);
for(int i=n;i>=1;i--){
in2[i] = query(c[i]-1);
update(c[i], 1);
}
for(int i=0;i<n;i++){
cnt += in1[i]*in2[i];
}
cout << cnt;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
256 ms |
19904 KB |
Output is correct |
3 |
Correct |
246 ms |
19856 KB |
Output is correct |
4 |
Correct |
243 ms |
19860 KB |
Output is correct |
5 |
Correct |
220 ms |
19856 KB |
Output is correct |
6 |
Correct |
252 ms |
19856 KB |
Output is correct |
7 |
Correct |
231 ms |
19864 KB |
Output is correct |
8 |
Correct |
233 ms |
19860 KB |
Output is correct |
9 |
Correct |
224 ms |
19892 KB |
Output is correct |
10 |
Correct |
236 ms |
19864 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
76 ms |
14864 KB |
Output is correct |
2 |
Correct |
133 ms |
14952 KB |
Output is correct |
3 |
Correct |
86 ms |
14960 KB |
Output is correct |
4 |
Correct |
87 ms |
14952 KB |
Output is correct |
5 |
Correct |
79 ms |
14924 KB |
Output is correct |
6 |
Correct |
136 ms |
14872 KB |
Output is correct |
7 |
Correct |
97 ms |
14860 KB |
Output is correct |
8 |
Correct |
56 ms |
14908 KB |
Output is correct |
9 |
Correct |
60 ms |
14880 KB |
Output is correct |
10 |
Correct |
1 ms |
216 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
76 ms |
14864 KB |
Output is correct |
2 |
Correct |
133 ms |
14952 KB |
Output is correct |
3 |
Correct |
86 ms |
14960 KB |
Output is correct |
4 |
Correct |
87 ms |
14952 KB |
Output is correct |
5 |
Correct |
79 ms |
14924 KB |
Output is correct |
6 |
Correct |
136 ms |
14872 KB |
Output is correct |
7 |
Correct |
97 ms |
14860 KB |
Output is correct |
8 |
Correct |
56 ms |
14908 KB |
Output is correct |
9 |
Correct |
60 ms |
14880 KB |
Output is correct |
10 |
Correct |
1 ms |
216 KB |
Output is correct |
11 |
Correct |
102 ms |
15148 KB |
Output is correct |
12 |
Correct |
159 ms |
15116 KB |
Output is correct |
13 |
Correct |
99 ms |
15136 KB |
Output is correct |
14 |
Correct |
112 ms |
15160 KB |
Output is correct |
15 |
Correct |
101 ms |
15220 KB |
Output is correct |
16 |
Correct |
124 ms |
15124 KB |
Output is correct |
17 |
Correct |
98 ms |
15124 KB |
Output is correct |
18 |
Correct |
74 ms |
15180 KB |
Output is correct |
19 |
Correct |
78 ms |
15132 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
312 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
2 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
312 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
2 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
9 ms |
960 KB |
Output is correct |
12 |
Correct |
13 ms |
896 KB |
Output is correct |
13 |
Correct |
9 ms |
852 KB |
Output is correct |
14 |
Correct |
9 ms |
984 KB |
Output is correct |
15 |
Correct |
9 ms |
904 KB |
Output is correct |
16 |
Correct |
12 ms |
852 KB |
Output is correct |
17 |
Correct |
8 ms |
852 KB |
Output is correct |
18 |
Correct |
21 ms |
848 KB |
Output is correct |
19 |
Correct |
4 ms |
708 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
76 ms |
14864 KB |
Output is correct |
2 |
Correct |
133 ms |
14952 KB |
Output is correct |
3 |
Correct |
86 ms |
14960 KB |
Output is correct |
4 |
Correct |
87 ms |
14952 KB |
Output is correct |
5 |
Correct |
79 ms |
14924 KB |
Output is correct |
6 |
Correct |
136 ms |
14872 KB |
Output is correct |
7 |
Correct |
97 ms |
14860 KB |
Output is correct |
8 |
Correct |
56 ms |
14908 KB |
Output is correct |
9 |
Correct |
60 ms |
14880 KB |
Output is correct |
10 |
Correct |
1 ms |
216 KB |
Output is correct |
11 |
Correct |
102 ms |
15148 KB |
Output is correct |
12 |
Correct |
159 ms |
15116 KB |
Output is correct |
13 |
Correct |
99 ms |
15136 KB |
Output is correct |
14 |
Correct |
112 ms |
15160 KB |
Output is correct |
15 |
Correct |
101 ms |
15220 KB |
Output is correct |
16 |
Correct |
124 ms |
15124 KB |
Output is correct |
17 |
Correct |
98 ms |
15124 KB |
Output is correct |
18 |
Correct |
74 ms |
15180 KB |
Output is correct |
19 |
Correct |
78 ms |
15132 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
21 |
Correct |
142 ms |
16012 KB |
Output is correct |
22 |
Correct |
139 ms |
16012 KB |
Output is correct |
23 |
Correct |
145 ms |
16016 KB |
Output is correct |
24 |
Correct |
152 ms |
16016 KB |
Output is correct |
25 |
Correct |
150 ms |
16012 KB |
Output is correct |
26 |
Correct |
163 ms |
16168 KB |
Output is correct |
27 |
Correct |
142 ms |
16032 KB |
Output is correct |
28 |
Correct |
139 ms |
16096 KB |
Output is correct |
29 |
Correct |
122 ms |
16016 KB |
Output is correct |
30 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
256 ms |
19904 KB |
Output is correct |
3 |
Correct |
246 ms |
19856 KB |
Output is correct |
4 |
Correct |
243 ms |
19860 KB |
Output is correct |
5 |
Correct |
220 ms |
19856 KB |
Output is correct |
6 |
Correct |
252 ms |
19856 KB |
Output is correct |
7 |
Correct |
231 ms |
19864 KB |
Output is correct |
8 |
Correct |
233 ms |
19860 KB |
Output is correct |
9 |
Correct |
224 ms |
19892 KB |
Output is correct |
10 |
Correct |
236 ms |
19864 KB |
Output is correct |
11 |
Correct |
76 ms |
14864 KB |
Output is correct |
12 |
Correct |
133 ms |
14952 KB |
Output is correct |
13 |
Correct |
86 ms |
14960 KB |
Output is correct |
14 |
Correct |
87 ms |
14952 KB |
Output is correct |
15 |
Correct |
79 ms |
14924 KB |
Output is correct |
16 |
Correct |
136 ms |
14872 KB |
Output is correct |
17 |
Correct |
97 ms |
14860 KB |
Output is correct |
18 |
Correct |
56 ms |
14908 KB |
Output is correct |
19 |
Correct |
60 ms |
14880 KB |
Output is correct |
20 |
Correct |
1 ms |
216 KB |
Output is correct |
21 |
Correct |
102 ms |
15148 KB |
Output is correct |
22 |
Correct |
159 ms |
15116 KB |
Output is correct |
23 |
Correct |
99 ms |
15136 KB |
Output is correct |
24 |
Correct |
112 ms |
15160 KB |
Output is correct |
25 |
Correct |
101 ms |
15220 KB |
Output is correct |
26 |
Correct |
124 ms |
15124 KB |
Output is correct |
27 |
Correct |
98 ms |
15124 KB |
Output is correct |
28 |
Correct |
74 ms |
15180 KB |
Output is correct |
29 |
Correct |
78 ms |
15132 KB |
Output is correct |
30 |
Correct |
1 ms |
212 KB |
Output is correct |
31 |
Correct |
1 ms |
312 KB |
Output is correct |
32 |
Correct |
1 ms |
340 KB |
Output is correct |
33 |
Correct |
1 ms |
340 KB |
Output is correct |
34 |
Correct |
1 ms |
340 KB |
Output is correct |
35 |
Correct |
1 ms |
340 KB |
Output is correct |
36 |
Correct |
2 ms |
340 KB |
Output is correct |
37 |
Correct |
1 ms |
340 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
1 ms |
340 KB |
Output is correct |
40 |
Correct |
1 ms |
212 KB |
Output is correct |
41 |
Correct |
9 ms |
960 KB |
Output is correct |
42 |
Correct |
13 ms |
896 KB |
Output is correct |
43 |
Correct |
9 ms |
852 KB |
Output is correct |
44 |
Correct |
9 ms |
984 KB |
Output is correct |
45 |
Correct |
9 ms |
904 KB |
Output is correct |
46 |
Correct |
12 ms |
852 KB |
Output is correct |
47 |
Correct |
8 ms |
852 KB |
Output is correct |
48 |
Correct |
21 ms |
848 KB |
Output is correct |
49 |
Correct |
4 ms |
708 KB |
Output is correct |
50 |
Correct |
1 ms |
212 KB |
Output is correct |
51 |
Correct |
142 ms |
16012 KB |
Output is correct |
52 |
Correct |
139 ms |
16012 KB |
Output is correct |
53 |
Correct |
145 ms |
16016 KB |
Output is correct |
54 |
Correct |
152 ms |
16016 KB |
Output is correct |
55 |
Correct |
150 ms |
16012 KB |
Output is correct |
56 |
Correct |
163 ms |
16168 KB |
Output is correct |
57 |
Correct |
142 ms |
16032 KB |
Output is correct |
58 |
Correct |
139 ms |
16096 KB |
Output is correct |
59 |
Correct |
122 ms |
16016 KB |
Output is correct |
60 |
Correct |
1 ms |
212 KB |
Output is correct |
61 |
Correct |
283 ms |
19860 KB |
Output is correct |
62 |
Correct |
288 ms |
19860 KB |
Output is correct |
63 |
Correct |
266 ms |
19860 KB |
Output is correct |
64 |
Correct |
281 ms |
19860 KB |
Output is correct |
65 |
Correct |
272 ms |
19880 KB |
Output is correct |
66 |
Correct |
264 ms |
19800 KB |
Output is correct |
67 |
Correct |
252 ms |
19848 KB |
Output is correct |
68 |
Correct |
290 ms |
19860 KB |
Output is correct |
69 |
Correct |
145 ms |
16208 KB |
Output is correct |
70 |
Correct |
1 ms |
308 KB |
Output is correct |