#include<bits/stdc++.h>
using namespace std;
bool le (int a, int b) {
if (abs(a) == abs(b)) return a < b;
return abs(a) < abs(b);
}
int n;
long long inv (vector<int> &b, int l, int r) {
if (r == l) return 0;
int mid = (l + r)/2;
long long now = inv(b, l, mid) + inv(b, mid+1, r);
int i = l, j = mid+1;
vector<int> c;
// for (int i = l; i <= mid; i++) cerr << b[i] << ' '; cerr << " : ";
// for (int i = mid+1; i <= r; i++) cerr << b[i] << ' '; cerr << endl;
while (i <= mid and j <= r) {
if (le(b[i], b[j])) c.push_back(b[i++]);
else c.push_back(b[j++]), now += mid-i+1;
}
while(i <= mid) c.push_back(b[i++]);
while(j <= r) c.push_back(b[j++]);
for (int i = l, j = 0; i <= r; i++, j++) b[i] = c[j];
// for (int i = 0; i < 2*n; i++) cerr << b[i] << ' '; cerr << endl;
return now;
}
long long count_swaps (vector<int> a){
n = a.size() / 2;
vector<int> b;
map<int, queue<int>> q;
int cnt = 1;
for (auto x : a) {
if (!q[x].empty()) { b.push_back(q[x].front()); q[x].pop(); continue; }
b.push_back(cnt * (x<0?-1:1));
q[-x].push(cnt * (x<0?1:-1));
cnt++;
}
// for (auto x : b) cerr << x << ' '; cerr << endl;
return inv (b, 0, b.size()-1);
}
// int main () {
// printf("%lld", count_swaps({3, -3, 2, 1, -1, -1, -2, -3, 1, 3}));
// return 0;
// }
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
5 ms |
256 KB |
Output is correct |
6 |
Correct |
5 ms |
256 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
5 ms |
256 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
256 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
256 KB |
Output is correct |
13 |
Correct |
5 ms |
256 KB |
Output is correct |
14 |
Correct |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 ms |
256 KB |
Output is correct |
16 |
Correct |
5 ms |
256 KB |
Output is correct |
17 |
Correct |
5 ms |
256 KB |
Output is correct |
18 |
Correct |
5 ms |
256 KB |
Output is correct |
19 |
Correct |
5 ms |
256 KB |
Output is correct |
20 |
Correct |
5 ms |
376 KB |
Output is correct |
21 |
Correct |
5 ms |
256 KB |
Output is correct |
22 |
Correct |
5 ms |
376 KB |
Output is correct |
23 |
Correct |
5 ms |
256 KB |
Output is correct |
24 |
Correct |
5 ms |
376 KB |
Output is correct |
25 |
Correct |
5 ms |
256 KB |
Output is correct |
26 |
Correct |
5 ms |
256 KB |
Output is correct |
27 |
Correct |
5 ms |
256 KB |
Output is correct |
28 |
Correct |
5 ms |
256 KB |
Output is correct |
29 |
Correct |
5 ms |
376 KB |
Output is correct |
30 |
Correct |
5 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
256 KB |
Output is correct |
32 |
Correct |
5 ms |
256 KB |
Output is correct |
33 |
Correct |
5 ms |
376 KB |
Output is correct |
34 |
Correct |
5 ms |
256 KB |
Output is correct |
35 |
Correct |
5 ms |
256 KB |
Output is correct |
36 |
Correct |
5 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
376 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
5 ms |
256 KB |
Output is correct |
6 |
Correct |
5 ms |
256 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
5 ms |
256 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
256 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
256 KB |
Output is correct |
13 |
Correct |
5 ms |
376 KB |
Output is correct |
14 |
Correct |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 ms |
256 KB |
Output is correct |
16 |
Correct |
5 ms |
256 KB |
Output is correct |
17 |
Correct |
5 ms |
376 KB |
Output is correct |
18 |
Correct |
5 ms |
376 KB |
Output is correct |
19 |
Correct |
5 ms |
376 KB |
Output is correct |
20 |
Correct |
14 ms |
888 KB |
Output is correct |
21 |
Correct |
13 ms |
888 KB |
Output is correct |
22 |
Correct |
91 ms |
4308 KB |
Output is correct |
23 |
Correct |
89 ms |
4316 KB |
Output is correct |
24 |
Correct |
91 ms |
4320 KB |
Output is correct |
25 |
Correct |
84 ms |
4716 KB |
Output is correct |
26 |
Correct |
89 ms |
5452 KB |
Output is correct |
27 |
Correct |
91 ms |
5332 KB |
Output is correct |
28 |
Correct |
86 ms |
5964 KB |
Output is correct |
29 |
Correct |
87 ms |
5868 KB |
Output is correct |
30 |
Correct |
87 ms |
5868 KB |
Output is correct |
31 |
Correct |
91 ms |
5468 KB |
Output is correct |
32 |
Correct |
86 ms |
5868 KB |
Output is correct |
33 |
Correct |
86 ms |
5740 KB |
Output is correct |
34 |
Correct |
85 ms |
5868 KB |
Output is correct |
35 |
Correct |
5 ms |
256 KB |
Output is correct |
36 |
Correct |
5 ms |
256 KB |
Output is correct |
37 |
Correct |
84 ms |
5952 KB |
Output is correct |
38 |
Correct |
86 ms |
5868 KB |
Output is correct |
39 |
Correct |
86 ms |
5868 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
376 KB |
Output is correct |
5 |
Correct |
609 ms |
148368 KB |
Output is correct |
6 |
Correct |
214 ms |
18124 KB |
Output is correct |
7 |
Correct |
604 ms |
149716 KB |
Output is correct |
8 |
Correct |
87 ms |
5868 KB |
Output is correct |
9 |
Correct |
600 ms |
149564 KB |
Output is correct |
10 |
Correct |
429 ms |
77524 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
5 ms |
256 KB |
Output is correct |
6 |
Correct |
5 ms |
256 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
5 ms |
256 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
256 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
256 KB |
Output is correct |
13 |
Correct |
5 ms |
256 KB |
Output is correct |
14 |
Correct |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 ms |
256 KB |
Output is correct |
16 |
Correct |
5 ms |
256 KB |
Output is correct |
17 |
Correct |
5 ms |
256 KB |
Output is correct |
18 |
Correct |
5 ms |
256 KB |
Output is correct |
19 |
Correct |
5 ms |
256 KB |
Output is correct |
20 |
Correct |
5 ms |
376 KB |
Output is correct |
21 |
Correct |
5 ms |
256 KB |
Output is correct |
22 |
Correct |
5 ms |
376 KB |
Output is correct |
23 |
Correct |
5 ms |
256 KB |
Output is correct |
24 |
Correct |
5 ms |
376 KB |
Output is correct |
25 |
Correct |
5 ms |
256 KB |
Output is correct |
26 |
Correct |
5 ms |
256 KB |
Output is correct |
27 |
Correct |
5 ms |
256 KB |
Output is correct |
28 |
Correct |
5 ms |
256 KB |
Output is correct |
29 |
Correct |
5 ms |
376 KB |
Output is correct |
30 |
Correct |
5 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
256 KB |
Output is correct |
32 |
Correct |
5 ms |
256 KB |
Output is correct |
33 |
Correct |
5 ms |
376 KB |
Output is correct |
34 |
Correct |
5 ms |
256 KB |
Output is correct |
35 |
Correct |
5 ms |
256 KB |
Output is correct |
36 |
Correct |
5 ms |
256 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 |
504 KB |
Output is correct |
40 |
Correct |
5 ms |
632 KB |
Output is correct |
41 |
Correct |
7 ms |
1784 KB |
Output is correct |
42 |
Correct |
7 ms |
1784 KB |
Output is correct |
43 |
Correct |
7 ms |
1656 KB |
Output is correct |
44 |
Correct |
7 ms |
1400 KB |
Output is correct |
45 |
Correct |
7 ms |
1272 KB |
Output is correct |
46 |
Correct |
7 ms |
1144 KB |
Output is correct |
47 |
Correct |
7 ms |
1016 KB |
Output is correct |
48 |
Correct |
6 ms |
760 KB |
Output is correct |
49 |
Correct |
6 ms |
632 KB |
Output is correct |
50 |
Correct |
6 ms |
376 KB |
Output is correct |
51 |
Correct |
5 ms |
376 KB |
Output is correct |
52 |
Correct |
7 ms |
1784 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
5 ms |
256 KB |
Output is correct |
6 |
Correct |
5 ms |
256 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
5 ms |
256 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
256 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
256 KB |
Output is correct |
13 |
Correct |
5 ms |
256 KB |
Output is correct |
14 |
Correct |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 ms |
256 KB |
Output is correct |
16 |
Correct |
5 ms |
256 KB |
Output is correct |
17 |
Correct |
5 ms |
256 KB |
Output is correct |
18 |
Correct |
5 ms |
256 KB |
Output is correct |
19 |
Correct |
5 ms |
256 KB |
Output is correct |
20 |
Correct |
5 ms |
376 KB |
Output is correct |
21 |
Correct |
5 ms |
256 KB |
Output is correct |
22 |
Correct |
5 ms |
376 KB |
Output is correct |
23 |
Correct |
5 ms |
256 KB |
Output is correct |
24 |
Correct |
5 ms |
376 KB |
Output is correct |
25 |
Correct |
5 ms |
256 KB |
Output is correct |
26 |
Correct |
5 ms |
256 KB |
Output is correct |
27 |
Correct |
5 ms |
256 KB |
Output is correct |
28 |
Correct |
5 ms |
256 KB |
Output is correct |
29 |
Correct |
5 ms |
376 KB |
Output is correct |
30 |
Correct |
5 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
256 KB |
Output is correct |
32 |
Correct |
5 ms |
256 KB |
Output is correct |
33 |
Correct |
5 ms |
376 KB |
Output is correct |
34 |
Correct |
5 ms |
256 KB |
Output is correct |
35 |
Correct |
5 ms |
256 KB |
Output is correct |
36 |
Correct |
5 ms |
256 KB |
Output is correct |
37 |
Correct |
5 ms |
376 KB |
Output is correct |
38 |
Correct |
5 ms |
256 KB |
Output is correct |
39 |
Correct |
5 ms |
256 KB |
Output is correct |
40 |
Correct |
5 ms |
256 KB |
Output is correct |
41 |
Correct |
5 ms |
256 KB |
Output is correct |
42 |
Correct |
5 ms |
256 KB |
Output is correct |
43 |
Correct |
5 ms |
256 KB |
Output is correct |
44 |
Correct |
5 ms |
256 KB |
Output is correct |
45 |
Correct |
5 ms |
256 KB |
Output is correct |
46 |
Correct |
5 ms |
256 KB |
Output is correct |
47 |
Correct |
5 ms |
376 KB |
Output is correct |
48 |
Correct |
5 ms |
256 KB |
Output is correct |
49 |
Correct |
5 ms |
256 KB |
Output is correct |
50 |
Correct |
5 ms |
256 KB |
Output is correct |
51 |
Correct |
5 ms |
376 KB |
Output is correct |
52 |
Correct |
5 ms |
376 KB |
Output is correct |
53 |
Correct |
5 ms |
376 KB |
Output is correct |
54 |
Correct |
14 ms |
888 KB |
Output is correct |
55 |
Correct |
13 ms |
888 KB |
Output is correct |
56 |
Correct |
91 ms |
4308 KB |
Output is correct |
57 |
Correct |
89 ms |
4316 KB |
Output is correct |
58 |
Correct |
91 ms |
4320 KB |
Output is correct |
59 |
Correct |
84 ms |
4716 KB |
Output is correct |
60 |
Correct |
89 ms |
5452 KB |
Output is correct |
61 |
Correct |
91 ms |
5332 KB |
Output is correct |
62 |
Correct |
86 ms |
5964 KB |
Output is correct |
63 |
Correct |
87 ms |
5868 KB |
Output is correct |
64 |
Correct |
87 ms |
5868 KB |
Output is correct |
65 |
Correct |
91 ms |
5468 KB |
Output is correct |
66 |
Correct |
86 ms |
5868 KB |
Output is correct |
67 |
Correct |
86 ms |
5740 KB |
Output is correct |
68 |
Correct |
85 ms |
5868 KB |
Output is correct |
69 |
Correct |
5 ms |
256 KB |
Output is correct |
70 |
Correct |
5 ms |
256 KB |
Output is correct |
71 |
Correct |
84 ms |
5952 KB |
Output is correct |
72 |
Correct |
86 ms |
5868 KB |
Output is correct |
73 |
Correct |
86 ms |
5868 KB |
Output is correct |
74 |
Correct |
5 ms |
256 KB |
Output is correct |
75 |
Correct |
5 ms |
256 KB |
Output is correct |
76 |
Correct |
5 ms |
256 KB |
Output is correct |
77 |
Correct |
5 ms |
376 KB |
Output is correct |
78 |
Correct |
609 ms |
148368 KB |
Output is correct |
79 |
Correct |
214 ms |
18124 KB |
Output is correct |
80 |
Correct |
604 ms |
149716 KB |
Output is correct |
81 |
Correct |
87 ms |
5868 KB |
Output is correct |
82 |
Correct |
600 ms |
149564 KB |
Output is correct |
83 |
Correct |
429 ms |
77524 KB |
Output is correct |
84 |
Correct |
5 ms |
376 KB |
Output is correct |
85 |
Correct |
5 ms |
376 KB |
Output is correct |
86 |
Correct |
5 ms |
504 KB |
Output is correct |
87 |
Correct |
5 ms |
632 KB |
Output is correct |
88 |
Correct |
7 ms |
1784 KB |
Output is correct |
89 |
Correct |
7 ms |
1784 KB |
Output is correct |
90 |
Correct |
7 ms |
1656 KB |
Output is correct |
91 |
Correct |
7 ms |
1400 KB |
Output is correct |
92 |
Correct |
7 ms |
1272 KB |
Output is correct |
93 |
Correct |
7 ms |
1144 KB |
Output is correct |
94 |
Correct |
7 ms |
1016 KB |
Output is correct |
95 |
Correct |
6 ms |
760 KB |
Output is correct |
96 |
Correct |
6 ms |
632 KB |
Output is correct |
97 |
Correct |
6 ms |
376 KB |
Output is correct |
98 |
Correct |
5 ms |
376 KB |
Output is correct |
99 |
Correct |
7 ms |
1784 KB |
Output is correct |
100 |
Correct |
8 ms |
1784 KB |
Output is correct |
101 |
Correct |
42 ms |
13816 KB |
Output is correct |
102 |
Correct |
29 ms |
3832 KB |
Output is correct |
103 |
Correct |
642 ms |
149580 KB |
Output is correct |
104 |
Correct |
527 ms |
149476 KB |
Output is correct |
105 |
Correct |
446 ms |
87388 KB |
Output is correct |
106 |
Correct |
599 ms |
149580 KB |
Output is correct |
107 |
Correct |
219 ms |
21452 KB |
Output is correct |
108 |
Correct |
270 ms |
37580 KB |
Output is correct |
109 |
Correct |
85 ms |
5868 KB |
Output is correct |
110 |
Correct |
84 ms |
5868 KB |
Output is correct |
111 |
Correct |
560 ms |
133608 KB |
Output is correct |
112 |
Correct |
550 ms |
117588 KB |
Output is correct |
113 |
Correct |
244 ms |
23260 KB |
Output is correct |
114 |
Correct |
606 ms |
149588 KB |
Output is correct |
115 |
Correct |
606 ms |
149596 KB |
Output is correct |