#include <bits/stdc++.h>
#include "shoes.h"
#define LSOne(s) ((s) & -(s))
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
struct FenwickTree {
vector<ll> ft;
FenwickTree(int n) : ft(n+1) {}
ll rsq(int i) {
ll su = 0;
for (; i > 0; i -= LSOne(i)) {
su += ft[i];
}
return su;
}
void update(int i, ll dv) {
for (; i < (int)ft.size(); i += LSOne(i)) {
ft[i] += dv;
}
}
};
ll count_swaps(std::vector<int> s) {
FenwickTree ft(s.size());
map<int, queue<int>> open;
ll csum = 0;
vector<int> mypartner(s.size());
for (int i = 0; i < s.size(); i++)
{
if (open.find(-s[i]) != open.end() && !open[-s[i]].empty()) {
int j = open[-s[i]].front();
open[-s[i]].pop();
mypartner[j] = i;
mypartner[i] = j;
csum += (s[i] < 0);
}
else {
if (!open.count(s[i])) {
open[s[i]] = {};
}
open[s[i]].push(i);
}
}
for (int i = 0; i < s.size(); i++)
{
int j = mypartner[i];
if (j < i) continue;
csum += (j+ft.rsq(j+1))-(i+ft.rsq(i+1))-1;
ft.update(1, 1);
ft.update(j+1, -1);
}
return csum;
}
Compilation message
shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:33:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
33 | for (int i = 0; i < s.size(); i++)
| ~~^~~~~~~~~~
shoes.cpp:49:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
49 | for (int i = 0; i < s.size(); i++)
| ~~^~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
300 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
212 KB |
Output is correct |
22 |
Correct |
1 ms |
296 KB |
Output is correct |
23 |
Correct |
1 ms |
212 KB |
Output is correct |
24 |
Correct |
1 ms |
296 KB |
Output is correct |
25 |
Correct |
1 ms |
212 KB |
Output is correct |
26 |
Correct |
1 ms |
212 KB |
Output is correct |
27 |
Correct |
1 ms |
212 KB |
Output is correct |
28 |
Correct |
1 ms |
212 KB |
Output is correct |
29 |
Correct |
1 ms |
300 KB |
Output is correct |
30 |
Correct |
1 ms |
300 KB |
Output is correct |
31 |
Correct |
1 ms |
212 KB |
Output is correct |
32 |
Correct |
1 ms |
212 KB |
Output is correct |
33 |
Correct |
1 ms |
212 KB |
Output is correct |
34 |
Correct |
1 ms |
212 KB |
Output is correct |
35 |
Correct |
1 ms |
296 KB |
Output is correct |
36 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
304 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
1 ms |
304 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
304 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
212 KB |
Output is correct |
18 |
Correct |
1 ms |
308 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
4 ms |
724 KB |
Output is correct |
21 |
Correct |
4 ms |
740 KB |
Output is correct |
22 |
Correct |
35 ms |
5508 KB |
Output is correct |
23 |
Correct |
33 ms |
5460 KB |
Output is correct |
24 |
Correct |
31 ms |
5424 KB |
Output is correct |
25 |
Correct |
32 ms |
5620 KB |
Output is correct |
26 |
Correct |
31 ms |
5420 KB |
Output is correct |
27 |
Correct |
32 ms |
5292 KB |
Output is correct |
28 |
Correct |
36 ms |
5904 KB |
Output is correct |
29 |
Correct |
36 ms |
5804 KB |
Output is correct |
30 |
Correct |
33 ms |
5860 KB |
Output is correct |
31 |
Correct |
30 ms |
5428 KB |
Output is correct |
32 |
Correct |
31 ms |
5904 KB |
Output is correct |
33 |
Correct |
34 ms |
5684 KB |
Output is correct |
34 |
Correct |
34 ms |
5804 KB |
Output is correct |
35 |
Correct |
1 ms |
212 KB |
Output is correct |
36 |
Correct |
1 ms |
212 KB |
Output is correct |
37 |
Correct |
35 ms |
5804 KB |
Output is correct |
38 |
Correct |
38 ms |
5804 KB |
Output is correct |
39 |
Correct |
33 ms |
5840 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
302 ms |
77412 KB |
Output is correct |
6 |
Correct |
100 ms |
11808 KB |
Output is correct |
7 |
Correct |
315 ms |
77512 KB |
Output is correct |
8 |
Correct |
38 ms |
5804 KB |
Output is correct |
9 |
Correct |
296 ms |
77468 KB |
Output is correct |
10 |
Correct |
232 ms |
41468 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
300 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
212 KB |
Output is correct |
22 |
Correct |
1 ms |
296 KB |
Output is correct |
23 |
Correct |
1 ms |
212 KB |
Output is correct |
24 |
Correct |
1 ms |
296 KB |
Output is correct |
25 |
Correct |
1 ms |
212 KB |
Output is correct |
26 |
Correct |
1 ms |
212 KB |
Output is correct |
27 |
Correct |
1 ms |
212 KB |
Output is correct |
28 |
Correct |
1 ms |
212 KB |
Output is correct |
29 |
Correct |
1 ms |
300 KB |
Output is correct |
30 |
Correct |
1 ms |
300 KB |
Output is correct |
31 |
Correct |
1 ms |
212 KB |
Output is correct |
32 |
Correct |
1 ms |
212 KB |
Output is correct |
33 |
Correct |
1 ms |
212 KB |
Output is correct |
34 |
Correct |
1 ms |
212 KB |
Output is correct |
35 |
Correct |
1 ms |
296 KB |
Output is correct |
36 |
Correct |
1 ms |
212 KB |
Output is correct |
37 |
Correct |
1 ms |
304 KB |
Output is correct |
38 |
Correct |
1 ms |
212 KB |
Output is correct |
39 |
Correct |
1 ms |
340 KB |
Output is correct |
40 |
Correct |
1 ms |
432 KB |
Output is correct |
41 |
Correct |
2 ms |
980 KB |
Output is correct |
42 |
Correct |
2 ms |
980 KB |
Output is correct |
43 |
Correct |
2 ms |
980 KB |
Output is correct |
44 |
Correct |
2 ms |
852 KB |
Output is correct |
45 |
Correct |
2 ms |
724 KB |
Output is correct |
46 |
Correct |
2 ms |
724 KB |
Output is correct |
47 |
Correct |
2 ms |
596 KB |
Output is correct |
48 |
Correct |
1 ms |
564 KB |
Output is correct |
49 |
Correct |
1 ms |
440 KB |
Output is correct |
50 |
Correct |
1 ms |
340 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
2 ms |
980 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
300 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
212 KB |
Output is correct |
22 |
Correct |
1 ms |
296 KB |
Output is correct |
23 |
Correct |
1 ms |
212 KB |
Output is correct |
24 |
Correct |
1 ms |
296 KB |
Output is correct |
25 |
Correct |
1 ms |
212 KB |
Output is correct |
26 |
Correct |
1 ms |
212 KB |
Output is correct |
27 |
Correct |
1 ms |
212 KB |
Output is correct |
28 |
Correct |
1 ms |
212 KB |
Output is correct |
29 |
Correct |
1 ms |
300 KB |
Output is correct |
30 |
Correct |
1 ms |
300 KB |
Output is correct |
31 |
Correct |
1 ms |
212 KB |
Output is correct |
32 |
Correct |
1 ms |
212 KB |
Output is correct |
33 |
Correct |
1 ms |
212 KB |
Output is correct |
34 |
Correct |
1 ms |
212 KB |
Output is correct |
35 |
Correct |
1 ms |
296 KB |
Output is correct |
36 |
Correct |
1 ms |
212 KB |
Output is correct |
37 |
Correct |
0 ms |
212 KB |
Output is correct |
38 |
Correct |
1 ms |
212 KB |
Output is correct |
39 |
Correct |
1 ms |
212 KB |
Output is correct |
40 |
Correct |
1 ms |
212 KB |
Output is correct |
41 |
Correct |
0 ms |
212 KB |
Output is correct |
42 |
Correct |
1 ms |
304 KB |
Output is correct |
43 |
Correct |
1 ms |
212 KB |
Output is correct |
44 |
Correct |
1 ms |
212 KB |
Output is correct |
45 |
Correct |
1 ms |
304 KB |
Output is correct |
46 |
Correct |
1 ms |
212 KB |
Output is correct |
47 |
Correct |
1 ms |
212 KB |
Output is correct |
48 |
Correct |
1 ms |
304 KB |
Output is correct |
49 |
Correct |
1 ms |
212 KB |
Output is correct |
50 |
Correct |
1 ms |
212 KB |
Output is correct |
51 |
Correct |
1 ms |
212 KB |
Output is correct |
52 |
Correct |
1 ms |
308 KB |
Output is correct |
53 |
Correct |
1 ms |
340 KB |
Output is correct |
54 |
Correct |
4 ms |
724 KB |
Output is correct |
55 |
Correct |
4 ms |
740 KB |
Output is correct |
56 |
Correct |
35 ms |
5508 KB |
Output is correct |
57 |
Correct |
33 ms |
5460 KB |
Output is correct |
58 |
Correct |
31 ms |
5424 KB |
Output is correct |
59 |
Correct |
32 ms |
5620 KB |
Output is correct |
60 |
Correct |
31 ms |
5420 KB |
Output is correct |
61 |
Correct |
32 ms |
5292 KB |
Output is correct |
62 |
Correct |
36 ms |
5904 KB |
Output is correct |
63 |
Correct |
36 ms |
5804 KB |
Output is correct |
64 |
Correct |
33 ms |
5860 KB |
Output is correct |
65 |
Correct |
30 ms |
5428 KB |
Output is correct |
66 |
Correct |
31 ms |
5904 KB |
Output is correct |
67 |
Correct |
34 ms |
5684 KB |
Output is correct |
68 |
Correct |
34 ms |
5804 KB |
Output is correct |
69 |
Correct |
1 ms |
212 KB |
Output is correct |
70 |
Correct |
1 ms |
212 KB |
Output is correct |
71 |
Correct |
35 ms |
5804 KB |
Output is correct |
72 |
Correct |
38 ms |
5804 KB |
Output is correct |
73 |
Correct |
33 ms |
5840 KB |
Output is correct |
74 |
Correct |
0 ms |
212 KB |
Output is correct |
75 |
Correct |
0 ms |
212 KB |
Output is correct |
76 |
Correct |
1 ms |
212 KB |
Output is correct |
77 |
Correct |
0 ms |
212 KB |
Output is correct |
78 |
Correct |
302 ms |
77412 KB |
Output is correct |
79 |
Correct |
100 ms |
11808 KB |
Output is correct |
80 |
Correct |
315 ms |
77512 KB |
Output is correct |
81 |
Correct |
38 ms |
5804 KB |
Output is correct |
82 |
Correct |
296 ms |
77468 KB |
Output is correct |
83 |
Correct |
232 ms |
41468 KB |
Output is correct |
84 |
Correct |
1 ms |
304 KB |
Output is correct |
85 |
Correct |
1 ms |
212 KB |
Output is correct |
86 |
Correct |
1 ms |
340 KB |
Output is correct |
87 |
Correct |
1 ms |
432 KB |
Output is correct |
88 |
Correct |
2 ms |
980 KB |
Output is correct |
89 |
Correct |
2 ms |
980 KB |
Output is correct |
90 |
Correct |
2 ms |
980 KB |
Output is correct |
91 |
Correct |
2 ms |
852 KB |
Output is correct |
92 |
Correct |
2 ms |
724 KB |
Output is correct |
93 |
Correct |
2 ms |
724 KB |
Output is correct |
94 |
Correct |
2 ms |
596 KB |
Output is correct |
95 |
Correct |
1 ms |
564 KB |
Output is correct |
96 |
Correct |
1 ms |
440 KB |
Output is correct |
97 |
Correct |
1 ms |
340 KB |
Output is correct |
98 |
Correct |
1 ms |
340 KB |
Output is correct |
99 |
Correct |
2 ms |
980 KB |
Output is correct |
100 |
Correct |
2 ms |
980 KB |
Output is correct |
101 |
Correct |
19 ms |
7444 KB |
Output is correct |
102 |
Correct |
13 ms |
3028 KB |
Output is correct |
103 |
Correct |
348 ms |
77440 KB |
Output is correct |
104 |
Correct |
266 ms |
77348 KB |
Output is correct |
105 |
Correct |
268 ms |
59432 KB |
Output is correct |
106 |
Correct |
326 ms |
77500 KB |
Output is correct |
107 |
Correct |
108 ms |
13452 KB |
Output is correct |
108 |
Correct |
125 ms |
21420 KB |
Output is correct |
109 |
Correct |
33 ms |
5812 KB |
Output is correct |
110 |
Correct |
31 ms |
5836 KB |
Output is correct |
111 |
Correct |
306 ms |
69440 KB |
Output is correct |
112 |
Correct |
286 ms |
61468 KB |
Output is correct |
113 |
Correct |
118 ms |
14292 KB |
Output is correct |
114 |
Correct |
311 ms |
77476 KB |
Output is correct |
115 |
Correct |
310 ms |
77384 KB |
Output is correct |