#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
int n;
vector<int> L[200005], R[200005];
vector<pii> P;
int fenwick[200005];
void updt(int idx,int v) {
idx++;
while(idx <= n) {
fenwick[idx] += v;
idx += idx & (-idx);
}
}
int sum(int idx) {
idx++;
int ret = 0;
while(idx) {
ret += fenwick[idx];
idx -= idx & (-idx);
}
return ret;
}
ll count_swaps(std::vector<int> s) {
n = s.size();
for(int i=0;i<n;i++) {
if(s[i] < 0) {
L[-s[i]].push_back(i);
} else {
R[s[i]].push_back(i);
}
}
ll ret = 0;
for(int i=0;i<=n;i++) {
for(int j=0;j<L[i].size();j++) {
if(R[i][j] < L[i][j]) ret++;
P.push_back(pii(min(L[i][j],R[i][j]), max(L[i][j],R[i][j])));
}
}
sort(P.begin(),P.end());
for(int i=0;i<n;i++) {
updt(i,1);
}
for(pii p : P) {
//cout<<p.first<<' '<<p.second<<'\n';
ret += (ll)sum(p.second-1) - sum(p.first);
updt(p.second, -1);
}
return ret;
}
Compilation message
shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:40:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0;j<L[i].size();j++) {
~^~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
3 |
Correct |
10 ms |
9724 KB |
Output is correct |
4 |
Correct |
10 ms |
9720 KB |
Output is correct |
5 |
Correct |
10 ms |
9720 KB |
Output is correct |
6 |
Correct |
10 ms |
9720 KB |
Output is correct |
7 |
Correct |
10 ms |
9720 KB |
Output is correct |
8 |
Correct |
10 ms |
9720 KB |
Output is correct |
9 |
Correct |
10 ms |
9692 KB |
Output is correct |
10 |
Correct |
10 ms |
9720 KB |
Output is correct |
11 |
Correct |
10 ms |
9724 KB |
Output is correct |
12 |
Correct |
10 ms |
9720 KB |
Output is correct |
13 |
Correct |
10 ms |
9720 KB |
Output is correct |
14 |
Correct |
10 ms |
9720 KB |
Output is correct |
15 |
Correct |
11 ms |
9720 KB |
Output is correct |
16 |
Correct |
10 ms |
9720 KB |
Output is correct |
17 |
Correct |
10 ms |
9776 KB |
Output is correct |
18 |
Correct |
10 ms |
9720 KB |
Output is correct |
19 |
Correct |
12 ms |
9848 KB |
Output is correct |
20 |
Correct |
13 ms |
9724 KB |
Output is correct |
21 |
Correct |
13 ms |
9720 KB |
Output is correct |
22 |
Correct |
12 ms |
9724 KB |
Output is correct |
23 |
Correct |
13 ms |
9720 KB |
Output is correct |
24 |
Correct |
13 ms |
9720 KB |
Output is correct |
25 |
Correct |
11 ms |
9720 KB |
Output is correct |
26 |
Correct |
11 ms |
9720 KB |
Output is correct |
27 |
Correct |
11 ms |
9724 KB |
Output is correct |
28 |
Correct |
11 ms |
9720 KB |
Output is correct |
29 |
Correct |
10 ms |
9720 KB |
Output is correct |
30 |
Correct |
11 ms |
9720 KB |
Output is correct |
31 |
Correct |
11 ms |
9720 KB |
Output is correct |
32 |
Correct |
11 ms |
9720 KB |
Output is correct |
33 |
Correct |
10 ms |
9720 KB |
Output is correct |
34 |
Correct |
11 ms |
9720 KB |
Output is correct |
35 |
Correct |
10 ms |
9720 KB |
Output is correct |
36 |
Correct |
11 ms |
9720 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
3 |
Correct |
13 ms |
9720 KB |
Output is correct |
4 |
Correct |
10 ms |
9720 KB |
Output is correct |
5 |
Correct |
10 ms |
9720 KB |
Output is correct |
6 |
Correct |
11 ms |
9720 KB |
Output is correct |
7 |
Correct |
10 ms |
9720 KB |
Output is correct |
8 |
Correct |
11 ms |
9696 KB |
Output is correct |
9 |
Correct |
11 ms |
9720 KB |
Output is correct |
10 |
Correct |
11 ms |
9728 KB |
Output is correct |
11 |
Correct |
11 ms |
9720 KB |
Output is correct |
12 |
Correct |
10 ms |
9720 KB |
Output is correct |
13 |
Correct |
11 ms |
9720 KB |
Output is correct |
14 |
Correct |
11 ms |
9720 KB |
Output is correct |
15 |
Correct |
10 ms |
9720 KB |
Output is correct |
16 |
Correct |
10 ms |
9720 KB |
Output is correct |
17 |
Correct |
11 ms |
9724 KB |
Output is correct |
18 |
Correct |
10 ms |
9720 KB |
Output is correct |
19 |
Correct |
11 ms |
9720 KB |
Output is correct |
20 |
Correct |
14 ms |
10232 KB |
Output is correct |
21 |
Correct |
14 ms |
10232 KB |
Output is correct |
22 |
Correct |
52 ms |
13844 KB |
Output is correct |
23 |
Correct |
49 ms |
13772 KB |
Output is correct |
24 |
Correct |
53 ms |
13796 KB |
Output is correct |
25 |
Correct |
49 ms |
13828 KB |
Output is correct |
26 |
Correct |
53 ms |
13764 KB |
Output is correct |
27 |
Correct |
47 ms |
13800 KB |
Output is correct |
28 |
Correct |
50 ms |
13804 KB |
Output is correct |
29 |
Correct |
50 ms |
13776 KB |
Output is correct |
30 |
Correct |
51 ms |
13804 KB |
Output is correct |
31 |
Correct |
52 ms |
13696 KB |
Output is correct |
32 |
Correct |
50 ms |
13804 KB |
Output is correct |
33 |
Correct |
48 ms |
13804 KB |
Output is correct |
34 |
Correct |
54 ms |
13804 KB |
Output is correct |
35 |
Correct |
12 ms |
9720 KB |
Output is correct |
36 |
Correct |
13 ms |
9720 KB |
Output is correct |
37 |
Correct |
52 ms |
13804 KB |
Output is correct |
38 |
Correct |
53 ms |
13784 KB |
Output is correct |
39 |
Correct |
51 ms |
13804 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
3 |
Correct |
11 ms |
9692 KB |
Output is correct |
4 |
Correct |
10 ms |
9720 KB |
Output is correct |
5 |
Correct |
94 ms |
19308 KB |
Output is correct |
6 |
Correct |
74 ms |
14452 KB |
Output is correct |
7 |
Correct |
93 ms |
19280 KB |
Output is correct |
8 |
Correct |
57 ms |
13884 KB |
Output is correct |
9 |
Correct |
93 ms |
19308 KB |
Output is correct |
10 |
Correct |
88 ms |
16236 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
3 |
Correct |
10 ms |
9724 KB |
Output is correct |
4 |
Correct |
10 ms |
9720 KB |
Output is correct |
5 |
Correct |
10 ms |
9720 KB |
Output is correct |
6 |
Correct |
10 ms |
9720 KB |
Output is correct |
7 |
Correct |
10 ms |
9720 KB |
Output is correct |
8 |
Correct |
10 ms |
9720 KB |
Output is correct |
9 |
Correct |
10 ms |
9692 KB |
Output is correct |
10 |
Correct |
10 ms |
9720 KB |
Output is correct |
11 |
Correct |
10 ms |
9724 KB |
Output is correct |
12 |
Correct |
10 ms |
9720 KB |
Output is correct |
13 |
Correct |
10 ms |
9720 KB |
Output is correct |
14 |
Correct |
10 ms |
9720 KB |
Output is correct |
15 |
Correct |
11 ms |
9720 KB |
Output is correct |
16 |
Correct |
10 ms |
9720 KB |
Output is correct |
17 |
Correct |
10 ms |
9776 KB |
Output is correct |
18 |
Correct |
10 ms |
9720 KB |
Output is correct |
19 |
Correct |
12 ms |
9848 KB |
Output is correct |
20 |
Correct |
13 ms |
9724 KB |
Output is correct |
21 |
Correct |
13 ms |
9720 KB |
Output is correct |
22 |
Correct |
12 ms |
9724 KB |
Output is correct |
23 |
Correct |
13 ms |
9720 KB |
Output is correct |
24 |
Correct |
13 ms |
9720 KB |
Output is correct |
25 |
Correct |
11 ms |
9720 KB |
Output is correct |
26 |
Correct |
11 ms |
9720 KB |
Output is correct |
27 |
Correct |
11 ms |
9724 KB |
Output is correct |
28 |
Correct |
11 ms |
9720 KB |
Output is correct |
29 |
Correct |
10 ms |
9720 KB |
Output is correct |
30 |
Correct |
11 ms |
9720 KB |
Output is correct |
31 |
Correct |
11 ms |
9720 KB |
Output is correct |
32 |
Correct |
11 ms |
9720 KB |
Output is correct |
33 |
Correct |
10 ms |
9720 KB |
Output is correct |
34 |
Correct |
11 ms |
9720 KB |
Output is correct |
35 |
Correct |
10 ms |
9720 KB |
Output is correct |
36 |
Correct |
11 ms |
9720 KB |
Output is correct |
37 |
Correct |
10 ms |
9720 KB |
Output is correct |
38 |
Correct |
10 ms |
9796 KB |
Output is correct |
39 |
Correct |
13 ms |
9720 KB |
Output is correct |
40 |
Correct |
13 ms |
9720 KB |
Output is correct |
41 |
Correct |
11 ms |
9848 KB |
Output is correct |
42 |
Correct |
11 ms |
9848 KB |
Output is correct |
43 |
Correct |
11 ms |
9720 KB |
Output is correct |
44 |
Correct |
11 ms |
9848 KB |
Output is correct |
45 |
Correct |
11 ms |
9852 KB |
Output is correct |
46 |
Correct |
11 ms |
9848 KB |
Output is correct |
47 |
Correct |
11 ms |
9848 KB |
Output is correct |
48 |
Correct |
11 ms |
9720 KB |
Output is correct |
49 |
Correct |
12 ms |
9720 KB |
Output is correct |
50 |
Correct |
13 ms |
9764 KB |
Output is correct |
51 |
Correct |
13 ms |
9720 KB |
Output is correct |
52 |
Correct |
12 ms |
9848 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
3 |
Correct |
10 ms |
9724 KB |
Output is correct |
4 |
Correct |
10 ms |
9720 KB |
Output is correct |
5 |
Correct |
10 ms |
9720 KB |
Output is correct |
6 |
Correct |
10 ms |
9720 KB |
Output is correct |
7 |
Correct |
10 ms |
9720 KB |
Output is correct |
8 |
Correct |
10 ms |
9720 KB |
Output is correct |
9 |
Correct |
10 ms |
9692 KB |
Output is correct |
10 |
Correct |
10 ms |
9720 KB |
Output is correct |
11 |
Correct |
10 ms |
9724 KB |
Output is correct |
12 |
Correct |
10 ms |
9720 KB |
Output is correct |
13 |
Correct |
10 ms |
9720 KB |
Output is correct |
14 |
Correct |
10 ms |
9720 KB |
Output is correct |
15 |
Correct |
11 ms |
9720 KB |
Output is correct |
16 |
Correct |
10 ms |
9720 KB |
Output is correct |
17 |
Correct |
10 ms |
9776 KB |
Output is correct |
18 |
Correct |
10 ms |
9720 KB |
Output is correct |
19 |
Correct |
12 ms |
9848 KB |
Output is correct |
20 |
Correct |
13 ms |
9724 KB |
Output is correct |
21 |
Correct |
13 ms |
9720 KB |
Output is correct |
22 |
Correct |
12 ms |
9724 KB |
Output is correct |
23 |
Correct |
13 ms |
9720 KB |
Output is correct |
24 |
Correct |
13 ms |
9720 KB |
Output is correct |
25 |
Correct |
11 ms |
9720 KB |
Output is correct |
26 |
Correct |
11 ms |
9720 KB |
Output is correct |
27 |
Correct |
11 ms |
9724 KB |
Output is correct |
28 |
Correct |
11 ms |
9720 KB |
Output is correct |
29 |
Correct |
10 ms |
9720 KB |
Output is correct |
30 |
Correct |
11 ms |
9720 KB |
Output is correct |
31 |
Correct |
11 ms |
9720 KB |
Output is correct |
32 |
Correct |
11 ms |
9720 KB |
Output is correct |
33 |
Correct |
10 ms |
9720 KB |
Output is correct |
34 |
Correct |
11 ms |
9720 KB |
Output is correct |
35 |
Correct |
10 ms |
9720 KB |
Output is correct |
36 |
Correct |
11 ms |
9720 KB |
Output is correct |
37 |
Correct |
13 ms |
9720 KB |
Output is correct |
38 |
Correct |
10 ms |
9720 KB |
Output is correct |
39 |
Correct |
10 ms |
9720 KB |
Output is correct |
40 |
Correct |
11 ms |
9720 KB |
Output is correct |
41 |
Correct |
10 ms |
9720 KB |
Output is correct |
42 |
Correct |
11 ms |
9696 KB |
Output is correct |
43 |
Correct |
11 ms |
9720 KB |
Output is correct |
44 |
Correct |
11 ms |
9728 KB |
Output is correct |
45 |
Correct |
11 ms |
9720 KB |
Output is correct |
46 |
Correct |
10 ms |
9720 KB |
Output is correct |
47 |
Correct |
11 ms |
9720 KB |
Output is correct |
48 |
Correct |
11 ms |
9720 KB |
Output is correct |
49 |
Correct |
10 ms |
9720 KB |
Output is correct |
50 |
Correct |
10 ms |
9720 KB |
Output is correct |
51 |
Correct |
11 ms |
9724 KB |
Output is correct |
52 |
Correct |
10 ms |
9720 KB |
Output is correct |
53 |
Correct |
11 ms |
9720 KB |
Output is correct |
54 |
Correct |
14 ms |
10232 KB |
Output is correct |
55 |
Correct |
14 ms |
10232 KB |
Output is correct |
56 |
Correct |
52 ms |
13844 KB |
Output is correct |
57 |
Correct |
49 ms |
13772 KB |
Output is correct |
58 |
Correct |
53 ms |
13796 KB |
Output is correct |
59 |
Correct |
49 ms |
13828 KB |
Output is correct |
60 |
Correct |
53 ms |
13764 KB |
Output is correct |
61 |
Correct |
47 ms |
13800 KB |
Output is correct |
62 |
Correct |
50 ms |
13804 KB |
Output is correct |
63 |
Correct |
50 ms |
13776 KB |
Output is correct |
64 |
Correct |
51 ms |
13804 KB |
Output is correct |
65 |
Correct |
52 ms |
13696 KB |
Output is correct |
66 |
Correct |
50 ms |
13804 KB |
Output is correct |
67 |
Correct |
48 ms |
13804 KB |
Output is correct |
68 |
Correct |
54 ms |
13804 KB |
Output is correct |
69 |
Correct |
12 ms |
9720 KB |
Output is correct |
70 |
Correct |
13 ms |
9720 KB |
Output is correct |
71 |
Correct |
52 ms |
13804 KB |
Output is correct |
72 |
Correct |
53 ms |
13784 KB |
Output is correct |
73 |
Correct |
51 ms |
13804 KB |
Output is correct |
74 |
Correct |
11 ms |
9720 KB |
Output is correct |
75 |
Correct |
10 ms |
9720 KB |
Output is correct |
76 |
Correct |
11 ms |
9692 KB |
Output is correct |
77 |
Correct |
10 ms |
9720 KB |
Output is correct |
78 |
Correct |
94 ms |
19308 KB |
Output is correct |
79 |
Correct |
74 ms |
14452 KB |
Output is correct |
80 |
Correct |
93 ms |
19280 KB |
Output is correct |
81 |
Correct |
57 ms |
13884 KB |
Output is correct |
82 |
Correct |
93 ms |
19308 KB |
Output is correct |
83 |
Correct |
88 ms |
16236 KB |
Output is correct |
84 |
Correct |
10 ms |
9720 KB |
Output is correct |
85 |
Correct |
10 ms |
9796 KB |
Output is correct |
86 |
Correct |
13 ms |
9720 KB |
Output is correct |
87 |
Correct |
13 ms |
9720 KB |
Output is correct |
88 |
Correct |
11 ms |
9848 KB |
Output is correct |
89 |
Correct |
11 ms |
9848 KB |
Output is correct |
90 |
Correct |
11 ms |
9720 KB |
Output is correct |
91 |
Correct |
11 ms |
9848 KB |
Output is correct |
92 |
Correct |
11 ms |
9852 KB |
Output is correct |
93 |
Correct |
11 ms |
9848 KB |
Output is correct |
94 |
Correct |
11 ms |
9848 KB |
Output is correct |
95 |
Correct |
11 ms |
9720 KB |
Output is correct |
96 |
Correct |
12 ms |
9720 KB |
Output is correct |
97 |
Correct |
13 ms |
9764 KB |
Output is correct |
98 |
Correct |
13 ms |
9720 KB |
Output is correct |
99 |
Correct |
12 ms |
9848 KB |
Output is correct |
100 |
Correct |
13 ms |
9848 KB |
Output is correct |
101 |
Correct |
21 ms |
10744 KB |
Output is correct |
102 |
Correct |
20 ms |
10360 KB |
Output is correct |
103 |
Correct |
102 ms |
19184 KB |
Output is correct |
104 |
Correct |
105 ms |
19228 KB |
Output is correct |
105 |
Correct |
105 ms |
16588 KB |
Output is correct |
106 |
Correct |
92 ms |
19308 KB |
Output is correct |
107 |
Correct |
90 ms |
14644 KB |
Output is correct |
108 |
Correct |
80 ms |
14960 KB |
Output is correct |
109 |
Correct |
58 ms |
14192 KB |
Output is correct |
110 |
Correct |
50 ms |
13796 KB |
Output is correct |
111 |
Correct |
92 ms |
18540 KB |
Output is correct |
112 |
Correct |
102 ms |
17872 KB |
Output is correct |
113 |
Correct |
78 ms |
14576 KB |
Output is correct |
114 |
Correct |
92 ms |
19180 KB |
Output is correct |
115 |
Correct |
93 ms |
19308 KB |
Output is correct |