#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
using lli = long long;
using pii = pair<int,int>;
int n;
struct seg_tr{
int tr[200001];
void init() {
for(int i=0;i<=n;i++) tr[i] = 0;
}
void upd(int cur, int val) {
while(cur<=n) tr[cur]+=val, cur+=cur&-cur;
}
int get(int cur) {
int ret=0;
while(cur) ret+=tr[cur], cur-=cur&-cur;
return ret;
}
}seg;
long long count_swaps(vector<int> s) {
set<pii> vi, iv;
n = s.size();
seg.init();
for(int i=0;i<s.size();i++) {
vi.insert({s[i], i});
iv.insert({i, s[i]});
seg.upd(i+1, 1);
}
lli ans = 0;
int n=s.size() / 2;
for(int i=0;i<n;i++) {
auto st = iv.begin();
auto mat = vi.lower_bound({-st->se, 0});
ans += seg.get(mat->se);
if(st->se < 0) ans--;
seg.upd(st->fi+1, -1);
seg.upd(mat->se+1, -1);
iv.erase({mat->se, -st->se});
vi.erase(mat);
vi.erase({st->se, st->fi});
iv.erase(st);
}
return ans;
}
Compilation message
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:27:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<s.size();i++) {
~^~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
348 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
348 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
256 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
380 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
256 KB |
Output is correct |
20 |
Correct |
2 ms |
252 KB |
Output is correct |
21 |
Correct |
2 ms |
376 KB |
Output is correct |
22 |
Correct |
2 ms |
360 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
256 KB |
Output is correct |
25 |
Correct |
2 ms |
256 KB |
Output is correct |
26 |
Correct |
2 ms |
256 KB |
Output is correct |
27 |
Correct |
2 ms |
256 KB |
Output is correct |
28 |
Correct |
2 ms |
256 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
256 KB |
Output is correct |
32 |
Correct |
2 ms |
256 KB |
Output is correct |
33 |
Correct |
2 ms |
380 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
348 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
256 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
256 KB |
Output is correct |
11 |
Correct |
2 ms |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
4 ms |
504 KB |
Output is correct |
19 |
Correct |
3 ms |
504 KB |
Output is correct |
20 |
Correct |
18 ms |
2552 KB |
Output is correct |
21 |
Correct |
18 ms |
2552 KB |
Output is correct |
22 |
Correct |
211 ms |
22684 KB |
Output is correct |
23 |
Correct |
226 ms |
22904 KB |
Output is correct |
24 |
Correct |
213 ms |
22768 KB |
Output is correct |
25 |
Correct |
233 ms |
22588 KB |
Output is correct |
26 |
Correct |
210 ms |
22792 KB |
Output is correct |
27 |
Correct |
225 ms |
22516 KB |
Output is correct |
28 |
Correct |
229 ms |
22648 KB |
Output is correct |
29 |
Correct |
234 ms |
22840 KB |
Output is correct |
30 |
Correct |
227 ms |
22748 KB |
Output is correct |
31 |
Correct |
206 ms |
22780 KB |
Output is correct |
32 |
Correct |
209 ms |
22776 KB |
Output is correct |
33 |
Correct |
230 ms |
22552 KB |
Output is correct |
34 |
Correct |
229 ms |
22776 KB |
Output is correct |
35 |
Correct |
2 ms |
252 KB |
Output is correct |
36 |
Correct |
2 ms |
256 KB |
Output is correct |
37 |
Correct |
213 ms |
22792 KB |
Output is correct |
38 |
Correct |
206 ms |
22664 KB |
Output is correct |
39 |
Correct |
213 ms |
22896 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
395 ms |
22756 KB |
Output is correct |
6 |
Correct |
424 ms |
22784 KB |
Output is correct |
7 |
Correct |
384 ms |
22728 KB |
Output is correct |
8 |
Correct |
210 ms |
22876 KB |
Output is correct |
9 |
Correct |
397 ms |
22904 KB |
Output is correct |
10 |
Correct |
403 ms |
22876 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
348 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
256 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
380 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
256 KB |
Output is correct |
20 |
Correct |
2 ms |
252 KB |
Output is correct |
21 |
Correct |
2 ms |
376 KB |
Output is correct |
22 |
Correct |
2 ms |
360 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
256 KB |
Output is correct |
25 |
Correct |
2 ms |
256 KB |
Output is correct |
26 |
Correct |
2 ms |
256 KB |
Output is correct |
27 |
Correct |
2 ms |
256 KB |
Output is correct |
28 |
Correct |
2 ms |
256 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
256 KB |
Output is correct |
32 |
Correct |
2 ms |
256 KB |
Output is correct |
33 |
Correct |
2 ms |
380 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
376 KB |
Output is correct |
37 |
Correct |
2 ms |
256 KB |
Output is correct |
38 |
Correct |
2 ms |
376 KB |
Output is correct |
39 |
Correct |
2 ms |
376 KB |
Output is correct |
40 |
Correct |
2 ms |
376 KB |
Output is correct |
41 |
Correct |
4 ms |
504 KB |
Output is correct |
42 |
Correct |
4 ms |
504 KB |
Output is correct |
43 |
Correct |
4 ms |
504 KB |
Output is correct |
44 |
Correct |
4 ms |
504 KB |
Output is correct |
45 |
Correct |
4 ms |
504 KB |
Output is correct |
46 |
Correct |
3 ms |
504 KB |
Output is correct |
47 |
Correct |
4 ms |
504 KB |
Output is correct |
48 |
Correct |
4 ms |
504 KB |
Output is correct |
49 |
Correct |
4 ms |
504 KB |
Output is correct |
50 |
Correct |
3 ms |
504 KB |
Output is correct |
51 |
Correct |
3 ms |
504 KB |
Output is correct |
52 |
Correct |
4 ms |
504 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
348 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
256 KB |
Output is correct |
8 |
Correct |
2 ms |
256 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
380 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
256 KB |
Output is correct |
20 |
Correct |
2 ms |
252 KB |
Output is correct |
21 |
Correct |
2 ms |
376 KB |
Output is correct |
22 |
Correct |
2 ms |
360 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
256 KB |
Output is correct |
25 |
Correct |
2 ms |
256 KB |
Output is correct |
26 |
Correct |
2 ms |
256 KB |
Output is correct |
27 |
Correct |
2 ms |
256 KB |
Output is correct |
28 |
Correct |
2 ms |
256 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
256 KB |
Output is correct |
32 |
Correct |
2 ms |
256 KB |
Output is correct |
33 |
Correct |
2 ms |
380 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
376 KB |
Output is correct |
37 |
Correct |
2 ms |
376 KB |
Output is correct |
38 |
Correct |
2 ms |
256 KB |
Output is correct |
39 |
Correct |
2 ms |
256 KB |
Output is correct |
40 |
Correct |
2 ms |
376 KB |
Output is correct |
41 |
Correct |
2 ms |
256 KB |
Output is correct |
42 |
Correct |
2 ms |
256 KB |
Output is correct |
43 |
Correct |
2 ms |
376 KB |
Output is correct |
44 |
Correct |
2 ms |
256 KB |
Output is correct |
45 |
Correct |
2 ms |
256 KB |
Output is correct |
46 |
Correct |
2 ms |
376 KB |
Output is correct |
47 |
Correct |
2 ms |
256 KB |
Output is correct |
48 |
Correct |
2 ms |
376 KB |
Output is correct |
49 |
Correct |
2 ms |
376 KB |
Output is correct |
50 |
Correct |
2 ms |
376 KB |
Output is correct |
51 |
Correct |
2 ms |
376 KB |
Output is correct |
52 |
Correct |
4 ms |
504 KB |
Output is correct |
53 |
Correct |
3 ms |
504 KB |
Output is correct |
54 |
Correct |
18 ms |
2552 KB |
Output is correct |
55 |
Correct |
18 ms |
2552 KB |
Output is correct |
56 |
Correct |
211 ms |
22684 KB |
Output is correct |
57 |
Correct |
226 ms |
22904 KB |
Output is correct |
58 |
Correct |
213 ms |
22768 KB |
Output is correct |
59 |
Correct |
233 ms |
22588 KB |
Output is correct |
60 |
Correct |
210 ms |
22792 KB |
Output is correct |
61 |
Correct |
225 ms |
22516 KB |
Output is correct |
62 |
Correct |
229 ms |
22648 KB |
Output is correct |
63 |
Correct |
234 ms |
22840 KB |
Output is correct |
64 |
Correct |
227 ms |
22748 KB |
Output is correct |
65 |
Correct |
206 ms |
22780 KB |
Output is correct |
66 |
Correct |
209 ms |
22776 KB |
Output is correct |
67 |
Correct |
230 ms |
22552 KB |
Output is correct |
68 |
Correct |
229 ms |
22776 KB |
Output is correct |
69 |
Correct |
2 ms |
252 KB |
Output is correct |
70 |
Correct |
2 ms |
256 KB |
Output is correct |
71 |
Correct |
213 ms |
22792 KB |
Output is correct |
72 |
Correct |
206 ms |
22664 KB |
Output is correct |
73 |
Correct |
213 ms |
22896 KB |
Output is correct |
74 |
Correct |
2 ms |
256 KB |
Output is correct |
75 |
Correct |
2 ms |
376 KB |
Output is correct |
76 |
Correct |
2 ms |
256 KB |
Output is correct |
77 |
Correct |
2 ms |
256 KB |
Output is correct |
78 |
Correct |
395 ms |
22756 KB |
Output is correct |
79 |
Correct |
424 ms |
22784 KB |
Output is correct |
80 |
Correct |
384 ms |
22728 KB |
Output is correct |
81 |
Correct |
210 ms |
22876 KB |
Output is correct |
82 |
Correct |
397 ms |
22904 KB |
Output is correct |
83 |
Correct |
403 ms |
22876 KB |
Output is correct |
84 |
Correct |
2 ms |
256 KB |
Output is correct |
85 |
Correct |
2 ms |
376 KB |
Output is correct |
86 |
Correct |
2 ms |
376 KB |
Output is correct |
87 |
Correct |
2 ms |
376 KB |
Output is correct |
88 |
Correct |
4 ms |
504 KB |
Output is correct |
89 |
Correct |
4 ms |
504 KB |
Output is correct |
90 |
Correct |
4 ms |
504 KB |
Output is correct |
91 |
Correct |
4 ms |
504 KB |
Output is correct |
92 |
Correct |
4 ms |
504 KB |
Output is correct |
93 |
Correct |
3 ms |
504 KB |
Output is correct |
94 |
Correct |
4 ms |
504 KB |
Output is correct |
95 |
Correct |
4 ms |
504 KB |
Output is correct |
96 |
Correct |
4 ms |
504 KB |
Output is correct |
97 |
Correct |
3 ms |
504 KB |
Output is correct |
98 |
Correct |
3 ms |
504 KB |
Output is correct |
99 |
Correct |
4 ms |
504 KB |
Output is correct |
100 |
Correct |
4 ms |
504 KB |
Output is correct |
101 |
Correct |
28 ms |
2556 KB |
Output is correct |
102 |
Correct |
29 ms |
2552 KB |
Output is correct |
103 |
Correct |
530 ms |
22912 KB |
Output is correct |
104 |
Correct |
411 ms |
22780 KB |
Output is correct |
105 |
Correct |
462 ms |
22776 KB |
Output is correct |
106 |
Correct |
379 ms |
22764 KB |
Output is correct |
107 |
Correct |
456 ms |
22860 KB |
Output is correct |
108 |
Correct |
410 ms |
22788 KB |
Output is correct |
109 |
Correct |
200 ms |
22648 KB |
Output is correct |
110 |
Correct |
234 ms |
22800 KB |
Output is correct |
111 |
Correct |
390 ms |
22804 KB |
Output is correct |
112 |
Correct |
483 ms |
22776 KB |
Output is correct |
113 |
Correct |
489 ms |
22776 KB |
Output is correct |
114 |
Correct |
415 ms |
22780 KB |
Output is correct |
115 |
Correct |
390 ms |
22760 KB |
Output is correct |