#include "shoes.h"
#include <bits/stdc++.h>
#define sz(x) (int)x.size()
using namespace std;
struct fenwick {
int n;
vector<int> t;
fenwick (int n) {
this->n = n;
t.resize(n);
}
void upd(int i, int x) {
while (i < n) {
t[i] += x;
i |= i + 1;
}
}
void upd(int l, int r, int x) {
upd(l, x);
upd(r + 1, -x);
}
int get(int i) {
int r = 0;
for (; i >= 0; i = (i & (i + 1)) - 1) {
r += t[i];
}
return r;
}
};
long long count_swaps(vector<int> s) {
int n = sz(s) / 2;
long long swaps = 0;
set<int> unused;
vector<set<int>> pos(2 * n + 2);
for (int i = 0; i < 2 * n; i++) {
unused.insert(i);
pos[s[i] + n].insert(i);
}
fenwick f(2 * n + 2);
for (int i = 0; i < n; i++) {
int ft = *unused.begin();
unused.erase(unused.begin());
pos[s[ft] + n].erase(ft);
int sc = *pos[-s[ft] + n].begin();
pos[-s[ft] + n].erase(pos[-s[ft] + n].begin());
unused.erase(sc);
int actual_ft = ft + f.get(ft);
int actual_sc = sc + f.get(sc);
if (s[ft] < 0) {
swaps += actual_sc - actual_ft - 1;
f.upd(ft + 1, sc, +1);
} else {
swaps += actual_sc - actual_ft;
f.upd(ft, sc, +1);
}
}
return swaps;
}
/*
g++ -std=gnu++14 -O2 -Wall -pipe -static -o "shoes" "grader.cpp" "shoes.cpp"
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
432 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
500 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
344 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
348 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
1 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
1 ms |
436 KB |
Output is correct |
34 |
Correct |
1 ms |
348 KB |
Output is correct |
35 |
Correct |
1 ms |
344 KB |
Output is correct |
36 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
344 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
344 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
2 ms |
604 KB |
Output is correct |
19 |
Correct |
1 ms |
604 KB |
Output is correct |
20 |
Correct |
12 ms |
3420 KB |
Output is correct |
21 |
Correct |
9 ms |
3416 KB |
Output is correct |
22 |
Correct |
113 ms |
31612 KB |
Output is correct |
23 |
Correct |
105 ms |
31572 KB |
Output is correct |
24 |
Correct |
107 ms |
31708 KB |
Output is correct |
25 |
Correct |
104 ms |
31572 KB |
Output is correct |
26 |
Correct |
111 ms |
32032 KB |
Output is correct |
27 |
Correct |
119 ms |
31828 KB |
Output is correct |
28 |
Correct |
111 ms |
32224 KB |
Output is correct |
29 |
Correct |
113 ms |
32340 KB |
Output is correct |
30 |
Correct |
119 ms |
32448 KB |
Output is correct |
31 |
Correct |
112 ms |
32112 KB |
Output is correct |
32 |
Correct |
112 ms |
32012 KB |
Output is correct |
33 |
Correct |
113 ms |
31828 KB |
Output is correct |
34 |
Correct |
110 ms |
32084 KB |
Output is correct |
35 |
Correct |
1 ms |
344 KB |
Output is correct |
36 |
Correct |
1 ms |
348 KB |
Output is correct |
37 |
Correct |
108 ms |
32224 KB |
Output is correct |
38 |
Correct |
104 ms |
32080 KB |
Output is correct |
39 |
Correct |
106 ms |
31980 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
117 ms |
31720 KB |
Output is correct |
6 |
Correct |
138 ms |
32160 KB |
Output is correct |
7 |
Correct |
106 ms |
32144 KB |
Output is correct |
8 |
Correct |
109 ms |
32084 KB |
Output is correct |
9 |
Correct |
96 ms |
32080 KB |
Output is correct |
10 |
Correct |
146 ms |
32132 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
432 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
500 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
344 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
348 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
1 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
1 ms |
436 KB |
Output is correct |
34 |
Correct |
1 ms |
348 KB |
Output is correct |
35 |
Correct |
1 ms |
344 KB |
Output is correct |
36 |
Correct |
1 ms |
348 KB |
Output is correct |
37 |
Correct |
1 ms |
344 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
1 ms |
440 KB |
Output is correct |
40 |
Correct |
1 ms |
348 KB |
Output is correct |
41 |
Correct |
1 ms |
604 KB |
Output is correct |
42 |
Correct |
1 ms |
604 KB |
Output is correct |
43 |
Correct |
1 ms |
604 KB |
Output is correct |
44 |
Correct |
1 ms |
604 KB |
Output is correct |
45 |
Correct |
2 ms |
604 KB |
Output is correct |
46 |
Correct |
1 ms |
604 KB |
Output is correct |
47 |
Correct |
1 ms |
604 KB |
Output is correct |
48 |
Correct |
1 ms |
852 KB |
Output is correct |
49 |
Correct |
1 ms |
604 KB |
Output is correct |
50 |
Correct |
1 ms |
604 KB |
Output is correct |
51 |
Correct |
1 ms |
604 KB |
Output is correct |
52 |
Correct |
1 ms |
600 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
432 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
500 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
344 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
348 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
1 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
1 ms |
436 KB |
Output is correct |
34 |
Correct |
1 ms |
348 KB |
Output is correct |
35 |
Correct |
1 ms |
344 KB |
Output is correct |
36 |
Correct |
1 ms |
348 KB |
Output is correct |
37 |
Correct |
0 ms |
348 KB |
Output is correct |
38 |
Correct |
1 ms |
348 KB |
Output is correct |
39 |
Correct |
0 ms |
348 KB |
Output is correct |
40 |
Correct |
0 ms |
348 KB |
Output is correct |
41 |
Correct |
0 ms |
348 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
0 ms |
348 KB |
Output is correct |
44 |
Correct |
1 ms |
344 KB |
Output is correct |
45 |
Correct |
0 ms |
344 KB |
Output is correct |
46 |
Correct |
1 ms |
348 KB |
Output is correct |
47 |
Correct |
1 ms |
344 KB |
Output is correct |
48 |
Correct |
1 ms |
348 KB |
Output is correct |
49 |
Correct |
0 ms |
348 KB |
Output is correct |
50 |
Correct |
0 ms |
348 KB |
Output is correct |
51 |
Correct |
1 ms |
348 KB |
Output is correct |
52 |
Correct |
2 ms |
604 KB |
Output is correct |
53 |
Correct |
1 ms |
604 KB |
Output is correct |
54 |
Correct |
12 ms |
3420 KB |
Output is correct |
55 |
Correct |
9 ms |
3416 KB |
Output is correct |
56 |
Correct |
113 ms |
31612 KB |
Output is correct |
57 |
Correct |
105 ms |
31572 KB |
Output is correct |
58 |
Correct |
107 ms |
31708 KB |
Output is correct |
59 |
Correct |
104 ms |
31572 KB |
Output is correct |
60 |
Correct |
111 ms |
32032 KB |
Output is correct |
61 |
Correct |
119 ms |
31828 KB |
Output is correct |
62 |
Correct |
111 ms |
32224 KB |
Output is correct |
63 |
Correct |
113 ms |
32340 KB |
Output is correct |
64 |
Correct |
119 ms |
32448 KB |
Output is correct |
65 |
Correct |
112 ms |
32112 KB |
Output is correct |
66 |
Correct |
112 ms |
32012 KB |
Output is correct |
67 |
Correct |
113 ms |
31828 KB |
Output is correct |
68 |
Correct |
110 ms |
32084 KB |
Output is correct |
69 |
Correct |
1 ms |
344 KB |
Output is correct |
70 |
Correct |
1 ms |
348 KB |
Output is correct |
71 |
Correct |
108 ms |
32224 KB |
Output is correct |
72 |
Correct |
104 ms |
32080 KB |
Output is correct |
73 |
Correct |
106 ms |
31980 KB |
Output is correct |
74 |
Correct |
1 ms |
344 KB |
Output is correct |
75 |
Correct |
1 ms |
348 KB |
Output is correct |
76 |
Correct |
1 ms |
348 KB |
Output is correct |
77 |
Correct |
1 ms |
348 KB |
Output is correct |
78 |
Correct |
117 ms |
31720 KB |
Output is correct |
79 |
Correct |
138 ms |
32160 KB |
Output is correct |
80 |
Correct |
106 ms |
32144 KB |
Output is correct |
81 |
Correct |
109 ms |
32084 KB |
Output is correct |
82 |
Correct |
96 ms |
32080 KB |
Output is correct |
83 |
Correct |
146 ms |
32132 KB |
Output is correct |
84 |
Correct |
1 ms |
344 KB |
Output is correct |
85 |
Correct |
0 ms |
348 KB |
Output is correct |
86 |
Correct |
1 ms |
440 KB |
Output is correct |
87 |
Correct |
1 ms |
348 KB |
Output is correct |
88 |
Correct |
1 ms |
604 KB |
Output is correct |
89 |
Correct |
1 ms |
604 KB |
Output is correct |
90 |
Correct |
1 ms |
604 KB |
Output is correct |
91 |
Correct |
1 ms |
604 KB |
Output is correct |
92 |
Correct |
2 ms |
604 KB |
Output is correct |
93 |
Correct |
1 ms |
604 KB |
Output is correct |
94 |
Correct |
1 ms |
604 KB |
Output is correct |
95 |
Correct |
1 ms |
852 KB |
Output is correct |
96 |
Correct |
1 ms |
604 KB |
Output is correct |
97 |
Correct |
1 ms |
604 KB |
Output is correct |
98 |
Correct |
1 ms |
604 KB |
Output is correct |
99 |
Correct |
1 ms |
600 KB |
Output is correct |
100 |
Correct |
1 ms |
604 KB |
Output is correct |
101 |
Correct |
10 ms |
3420 KB |
Output is correct |
102 |
Correct |
11 ms |
3420 KB |
Output is correct |
103 |
Correct |
181 ms |
32200 KB |
Output is correct |
104 |
Correct |
95 ms |
32080 KB |
Output is correct |
105 |
Correct |
129 ms |
32172 KB |
Output is correct |
106 |
Correct |
105 ms |
32056 KB |
Output is correct |
107 |
Correct |
154 ms |
32168 KB |
Output is correct |
108 |
Correct |
119 ms |
32204 KB |
Output is correct |
109 |
Correct |
118 ms |
32228 KB |
Output is correct |
110 |
Correct |
103 ms |
32140 KB |
Output is correct |
111 |
Correct |
109 ms |
32024 KB |
Output is correct |
112 |
Correct |
177 ms |
32208 KB |
Output is correct |
113 |
Correct |
143 ms |
32092 KB |
Output is correct |
114 |
Correct |
100 ms |
32084 KB |
Output is correct |
115 |
Correct |
113 ms |
31960 KB |
Output is correct |