#include "bits/stdc++.h"
#include "ext/pb_ds/assoc_container.hpp"
#include "ext/pb_ds/tree_policy.hpp"
#include "ext/rope"
using namespace std;
using namespace chrono;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
mt19937 rng(high_resolution_clock::now().time_since_epoch().count());
mt19937_64 rngll(high_resolution_clock::now().time_since_epoch().count());
#define lambdify(x) [&](auto &&...args){ return x(forward<decltype(args)>(args)...); }
template<typename T, typename U> T &ctmax(T &x, const U &y){ return x = max<T>(x, y); }
template<typename T, typename U> T &ctmin(T &x, const U &y){ return x = min<T>(x, y); }
template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
struct segment{
int n;
vector<int> val;
segment(int n): n(n), val(n << 1, 1){
for(auto i = n - 1; i > 0; -- i){
val[i] = val[i << 1] + val[i << 1 ^ 1];
}
}
void update(int p, int x){
for(val[p += n] += x; p > 1; p >>= 1){
val[p >> 1] = val[p] + val[p ^ 1];
}
}
int query(int l, int r){
int res = 0;
for(l += n, r += n; l < r; l >>= 1, r >>= 1){
if(l & 1){
res += val[l ++];
}
if(r & 1){
res += val[-- r];
}
}
return res;
}
};
long long count_swaps(vector<int> a){
int n = int(a.size()) / 2;
map<int, queue<int>> q;
vector<int> paired(2 * n, -1);
for(auto i = 0; i < 2 * n; ++ i){
if(q.count(-a[i])){
auto &c = q[-a[i]];
paired[c.front()] = i;
c.pop();
if(c.empty()){
q.erase(-a[i]);
}
}
else{
q[a[i]].push(i);
}
}
segment tr(2 * n);
long long res = 0;
for(auto i = 0; i < 2 * n; ++ i){
if(~paired[i]){
if(a[i] > 0){
++ res;
}
int j = paired[i];
res += tr.query(i + 1, j);
tr.update(j, -1);
}
}
return res;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
384 KB |
Output is correct |
2 |
Correct |
4 ms |
256 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
384 KB |
Output is correct |
2 |
Correct |
4 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
384 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 |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 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 |
384 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
384 KB |
Output is correct |
13 |
Correct |
5 ms |
384 KB |
Output is correct |
14 |
Correct |
4 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 |
4 ms |
256 KB |
Output is correct |
20 |
Correct |
5 ms |
256 KB |
Output is correct |
21 |
Correct |
5 ms |
256 KB |
Output is correct |
22 |
Correct |
4 ms |
256 KB |
Output is correct |
23 |
Correct |
5 ms |
256 KB |
Output is correct |
24 |
Correct |
5 ms |
256 KB |
Output is correct |
25 |
Correct |
5 ms |
256 KB |
Output is correct |
26 |
Correct |
5 ms |
384 KB |
Output is correct |
27 |
Correct |
4 ms |
256 KB |
Output is correct |
28 |
Correct |
5 ms |
256 KB |
Output is correct |
29 |
Correct |
4 ms |
256 KB |
Output is correct |
30 |
Correct |
4 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
256 KB |
Output is correct |
32 |
Correct |
5 ms |
384 KB |
Output is correct |
33 |
Correct |
4 ms |
256 KB |
Output is correct |
34 |
Correct |
4 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 |
384 KB |
Output is correct |
2 |
Correct |
4 ms |
256 KB |
Output is correct |
3 |
Correct |
4 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
5 ms |
384 KB |
Output is correct |
6 |
Correct |
5 ms |
512 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
4 ms |
256 KB |
Output is correct |
9 |
Correct |
4 ms |
384 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 |
384 KB |
Output is correct |
18 |
Correct |
5 ms |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
384 KB |
Output is correct |
20 |
Correct |
8 ms |
896 KB |
Output is correct |
21 |
Correct |
9 ms |
768 KB |
Output is correct |
22 |
Correct |
47 ms |
4600 KB |
Output is correct |
23 |
Correct |
52 ms |
5496 KB |
Output is correct |
24 |
Correct |
44 ms |
5496 KB |
Output is correct |
25 |
Correct |
41 ms |
5472 KB |
Output is correct |
26 |
Correct |
48 ms |
5496 KB |
Output is correct |
27 |
Correct |
50 ms |
5368 KB |
Output is correct |
28 |
Correct |
43 ms |
5592 KB |
Output is correct |
29 |
Correct |
41 ms |
5720 KB |
Output is correct |
30 |
Correct |
42 ms |
5592 KB |
Output is correct |
31 |
Correct |
46 ms |
5496 KB |
Output is correct |
32 |
Correct |
41 ms |
5600 KB |
Output is correct |
33 |
Correct |
40 ms |
5464 KB |
Output is correct |
34 |
Correct |
43 ms |
5728 KB |
Output is correct |
35 |
Correct |
4 ms |
256 KB |
Output is correct |
36 |
Correct |
4 ms |
256 KB |
Output is correct |
37 |
Correct |
41 ms |
5600 KB |
Output is correct |
38 |
Correct |
41 ms |
5592 KB |
Output is correct |
39 |
Correct |
44 ms |
5728 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
416 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
4 ms |
256 KB |
Output is correct |
4 |
Correct |
4 ms |
256 KB |
Output is correct |
5 |
Correct |
258 ms |
74996 KB |
Output is correct |
6 |
Correct |
106 ms |
9464 KB |
Output is correct |
7 |
Correct |
265 ms |
75896 KB |
Output is correct |
8 |
Correct |
46 ms |
5712 KB |
Output is correct |
9 |
Correct |
271 ms |
75896 KB |
Output is correct |
10 |
Correct |
227 ms |
39928 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
384 KB |
Output is correct |
2 |
Correct |
4 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
384 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 |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 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 |
384 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
384 KB |
Output is correct |
13 |
Correct |
5 ms |
384 KB |
Output is correct |
14 |
Correct |
4 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 |
4 ms |
256 KB |
Output is correct |
20 |
Correct |
5 ms |
256 KB |
Output is correct |
21 |
Correct |
5 ms |
256 KB |
Output is correct |
22 |
Correct |
4 ms |
256 KB |
Output is correct |
23 |
Correct |
5 ms |
256 KB |
Output is correct |
24 |
Correct |
5 ms |
256 KB |
Output is correct |
25 |
Correct |
5 ms |
256 KB |
Output is correct |
26 |
Correct |
5 ms |
384 KB |
Output is correct |
27 |
Correct |
4 ms |
256 KB |
Output is correct |
28 |
Correct |
5 ms |
256 KB |
Output is correct |
29 |
Correct |
4 ms |
256 KB |
Output is correct |
30 |
Correct |
4 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
256 KB |
Output is correct |
32 |
Correct |
5 ms |
384 KB |
Output is correct |
33 |
Correct |
4 ms |
256 KB |
Output is correct |
34 |
Correct |
4 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 |
4 ms |
256 KB |
Output is correct |
38 |
Correct |
5 ms |
384 KB |
Output is correct |
39 |
Correct |
5 ms |
384 KB |
Output is correct |
40 |
Correct |
5 ms |
384 KB |
Output is correct |
41 |
Correct |
6 ms |
640 KB |
Output is correct |
42 |
Correct |
5 ms |
384 KB |
Output is correct |
43 |
Correct |
5 ms |
384 KB |
Output is correct |
44 |
Correct |
6 ms |
896 KB |
Output is correct |
45 |
Correct |
5 ms |
384 KB |
Output is correct |
46 |
Correct |
5 ms |
384 KB |
Output is correct |
47 |
Correct |
5 ms |
640 KB |
Output is correct |
48 |
Correct |
5 ms |
512 KB |
Output is correct |
49 |
Correct |
5 ms |
512 KB |
Output is correct |
50 |
Correct |
5 ms |
384 KB |
Output is correct |
51 |
Correct |
5 ms |
384 KB |
Output is correct |
52 |
Correct |
6 ms |
1024 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
384 KB |
Output is correct |
2 |
Correct |
4 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
384 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 |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 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 |
384 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
384 KB |
Output is correct |
13 |
Correct |
5 ms |
384 KB |
Output is correct |
14 |
Correct |
4 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 |
4 ms |
256 KB |
Output is correct |
20 |
Correct |
5 ms |
256 KB |
Output is correct |
21 |
Correct |
5 ms |
256 KB |
Output is correct |
22 |
Correct |
4 ms |
256 KB |
Output is correct |
23 |
Correct |
5 ms |
256 KB |
Output is correct |
24 |
Correct |
5 ms |
256 KB |
Output is correct |
25 |
Correct |
5 ms |
256 KB |
Output is correct |
26 |
Correct |
5 ms |
384 KB |
Output is correct |
27 |
Correct |
4 ms |
256 KB |
Output is correct |
28 |
Correct |
5 ms |
256 KB |
Output is correct |
29 |
Correct |
4 ms |
256 KB |
Output is correct |
30 |
Correct |
4 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
256 KB |
Output is correct |
32 |
Correct |
5 ms |
384 KB |
Output is correct |
33 |
Correct |
4 ms |
256 KB |
Output is correct |
34 |
Correct |
4 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 |
4 ms |
256 KB |
Output is correct |
38 |
Correct |
5 ms |
256 KB |
Output is correct |
39 |
Correct |
5 ms |
384 KB |
Output is correct |
40 |
Correct |
5 ms |
512 KB |
Output is correct |
41 |
Correct |
5 ms |
256 KB |
Output is correct |
42 |
Correct |
4 ms |
256 KB |
Output is correct |
43 |
Correct |
4 ms |
384 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 |
256 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 |
384 KB |
Output is correct |
52 |
Correct |
5 ms |
384 KB |
Output is correct |
53 |
Correct |
5 ms |
384 KB |
Output is correct |
54 |
Correct |
8 ms |
896 KB |
Output is correct |
55 |
Correct |
9 ms |
768 KB |
Output is correct |
56 |
Correct |
47 ms |
4600 KB |
Output is correct |
57 |
Correct |
52 ms |
5496 KB |
Output is correct |
58 |
Correct |
44 ms |
5496 KB |
Output is correct |
59 |
Correct |
41 ms |
5472 KB |
Output is correct |
60 |
Correct |
48 ms |
5496 KB |
Output is correct |
61 |
Correct |
50 ms |
5368 KB |
Output is correct |
62 |
Correct |
43 ms |
5592 KB |
Output is correct |
63 |
Correct |
41 ms |
5720 KB |
Output is correct |
64 |
Correct |
42 ms |
5592 KB |
Output is correct |
65 |
Correct |
46 ms |
5496 KB |
Output is correct |
66 |
Correct |
41 ms |
5600 KB |
Output is correct |
67 |
Correct |
40 ms |
5464 KB |
Output is correct |
68 |
Correct |
43 ms |
5728 KB |
Output is correct |
69 |
Correct |
4 ms |
256 KB |
Output is correct |
70 |
Correct |
4 ms |
256 KB |
Output is correct |
71 |
Correct |
41 ms |
5600 KB |
Output is correct |
72 |
Correct |
41 ms |
5592 KB |
Output is correct |
73 |
Correct |
44 ms |
5728 KB |
Output is correct |
74 |
Correct |
5 ms |
416 KB |
Output is correct |
75 |
Correct |
5 ms |
384 KB |
Output is correct |
76 |
Correct |
4 ms |
256 KB |
Output is correct |
77 |
Correct |
4 ms |
256 KB |
Output is correct |
78 |
Correct |
258 ms |
74996 KB |
Output is correct |
79 |
Correct |
106 ms |
9464 KB |
Output is correct |
80 |
Correct |
265 ms |
75896 KB |
Output is correct |
81 |
Correct |
46 ms |
5712 KB |
Output is correct |
82 |
Correct |
271 ms |
75896 KB |
Output is correct |
83 |
Correct |
227 ms |
39928 KB |
Output is correct |
84 |
Correct |
4 ms |
256 KB |
Output is correct |
85 |
Correct |
5 ms |
384 KB |
Output is correct |
86 |
Correct |
5 ms |
384 KB |
Output is correct |
87 |
Correct |
5 ms |
384 KB |
Output is correct |
88 |
Correct |
6 ms |
640 KB |
Output is correct |
89 |
Correct |
5 ms |
384 KB |
Output is correct |
90 |
Correct |
5 ms |
384 KB |
Output is correct |
91 |
Correct |
6 ms |
896 KB |
Output is correct |
92 |
Correct |
5 ms |
384 KB |
Output is correct |
93 |
Correct |
5 ms |
384 KB |
Output is correct |
94 |
Correct |
5 ms |
640 KB |
Output is correct |
95 |
Correct |
5 ms |
512 KB |
Output is correct |
96 |
Correct |
5 ms |
512 KB |
Output is correct |
97 |
Correct |
5 ms |
384 KB |
Output is correct |
98 |
Correct |
5 ms |
384 KB |
Output is correct |
99 |
Correct |
6 ms |
1024 KB |
Output is correct |
100 |
Correct |
6 ms |
768 KB |
Output is correct |
101 |
Correct |
20 ms |
4096 KB |
Output is correct |
102 |
Correct |
18 ms |
1664 KB |
Output is correct |
103 |
Correct |
310 ms |
40056 KB |
Output is correct |
104 |
Correct |
55 ms |
5496 KB |
Output is correct |
105 |
Correct |
105 ms |
6008 KB |
Output is correct |
106 |
Correct |
254 ms |
75896 KB |
Output is correct |
107 |
Correct |
82 ms |
6136 KB |
Output is correct |
108 |
Correct |
55 ms |
5496 KB |
Output is correct |
109 |
Correct |
45 ms |
5588 KB |
Output is correct |
110 |
Correct |
41 ms |
5592 KB |
Output is correct |
111 |
Correct |
265 ms |
68088 KB |
Output is correct |
112 |
Correct |
317 ms |
52472 KB |
Output is correct |
113 |
Correct |
123 ms |
12792 KB |
Output is correct |
114 |
Correct |
257 ms |
75896 KB |
Output is correct |
115 |
Correct |
257 ms |
75896 KB |
Output is correct |