#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
template <class T>
using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#include <cstdio>
#include <cassert>
#define Int long long
#define fore(i , n) for(int i = 0 ; i<n;i++)
#define pb push_back
#define forn(i , x , y) for(int i = x ; i >= y; i--)
Int swaps(vector<int> a , vector<int> b)
{
map<Int , vector<Int>> pos;
Int m = (Int)a.size();
fore(i , m)
{
pos[a[i]].pb(i);
}
Tree<Int> t;
Int ans = 0;
forn(i , m - 1 , 0)
{
t.insert(pos[b[i]].back());
ans+=(Int)t.order_of_key(pos[b[i]].back());
pos[b[i]].pop_back();
}
return ans;
}
Int count_swaps(vector<int> s)
{
int n = (int)s.size();
vector<int> t;
map<int , int> occ;
for(auto x : s)
{
occ[x]++;
if(occ[-x] >= occ[x])
{
occ[-x]--;
occ[x]--;
}
else
{
t.pb(-abs(x));
t.pb(abs(x));
}
}
return swaps(s , t);
}
//int main() {
// int n;
// assert(1 == scanf("%d", &n));
// vector<int> S(2 * n);
// for (int i = 0; i < 2 * n; i++)
// assert(1 == scanf("%d", &S[i]));
// fclose(stdin);
//
// long long result = count_swaps(S);
//
// printf("%lld\n", result);
// fclose(stdout);
// return 0;
//}
/*
5
-5 -5 -4 -4 -3 5 5 4 4 3
*/
Compilation message
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:36:9: warning: unused variable 'n' [-Wunused-variable]
36 | int n = (int)s.size();
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 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 |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 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 |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 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 |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
344 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
344 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
1 ms |
348 KB |
Output is correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 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 |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 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 |
1 ms |
604 KB |
Output is correct |
19 |
Correct |
1 ms |
604 KB |
Output is correct |
20 |
Correct |
10 ms |
2096 KB |
Output is correct |
21 |
Correct |
9 ms |
2048 KB |
Output is correct |
22 |
Correct |
111 ms |
18316 KB |
Output is correct |
23 |
Correct |
139 ms |
18416 KB |
Output is correct |
24 |
Correct |
78 ms |
18408 KB |
Output is correct |
25 |
Correct |
160 ms |
18220 KB |
Output is correct |
26 |
Correct |
110 ms |
18284 KB |
Output is correct |
27 |
Correct |
132 ms |
18304 KB |
Output is correct |
28 |
Correct |
161 ms |
18368 KB |
Output is correct |
29 |
Correct |
158 ms |
18364 KB |
Output is correct |
30 |
Correct |
156 ms |
18296 KB |
Output is correct |
31 |
Correct |
124 ms |
18680 KB |
Output is correct |
32 |
Correct |
153 ms |
18436 KB |
Output is correct |
33 |
Correct |
158 ms |
18368 KB |
Output is correct |
34 |
Correct |
163 ms |
18376 KB |
Output is correct |
35 |
Correct |
0 ms |
344 KB |
Output is correct |
36 |
Correct |
0 ms |
348 KB |
Output is correct |
37 |
Correct |
152 ms |
18240 KB |
Output is correct |
38 |
Correct |
154 ms |
18364 KB |
Output is correct |
39 |
Correct |
152 ms |
18284 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 |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
506 ms |
48176 KB |
Output is correct |
6 |
Correct |
309 ms |
21448 KB |
Output is correct |
7 |
Correct |
507 ms |
48012 KB |
Output is correct |
8 |
Correct |
149 ms |
18452 KB |
Output is correct |
9 |
Correct |
519 ms |
48072 KB |
Output is correct |
10 |
Correct |
428 ms |
32864 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 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 |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 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 |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 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 |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
344 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
344 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
1 ms |
348 KB |
Output is correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Correct |
0 ms |
348 KB |
Output is correct |
37 |
Correct |
0 ms |
344 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
0 ms |
348 KB |
Output is correct |
40 |
Correct |
1 ms |
348 KB |
Output is correct |
41 |
Correct |
3 ms |
856 KB |
Output is correct |
42 |
Correct |
2 ms |
860 KB |
Output is correct |
43 |
Correct |
2 ms |
860 KB |
Output is correct |
44 |
Correct |
2 ms |
600 KB |
Output is correct |
45 |
Correct |
2 ms |
604 KB |
Output is correct |
46 |
Correct |
2 ms |
856 KB |
Output is correct |
47 |
Correct |
2 ms |
600 KB |
Output is correct |
48 |
Correct |
2 ms |
604 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 |
2 ms |
860 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
344 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 |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 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 |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 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 |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
344 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
344 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
1 ms |
348 KB |
Output is correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Correct |
0 ms |
348 KB |
Output is correct |
37 |
Correct |
0 ms |
348 KB |
Output is correct |
38 |
Correct |
0 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 |
0 ms |
348 KB |
Output is correct |
45 |
Correct |
0 ms |
348 KB |
Output is correct |
46 |
Correct |
0 ms |
348 KB |
Output is correct |
47 |
Correct |
0 ms |
348 KB |
Output is correct |
48 |
Correct |
0 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 |
1 ms |
604 KB |
Output is correct |
53 |
Correct |
1 ms |
604 KB |
Output is correct |
54 |
Correct |
10 ms |
2096 KB |
Output is correct |
55 |
Correct |
9 ms |
2048 KB |
Output is correct |
56 |
Correct |
111 ms |
18316 KB |
Output is correct |
57 |
Correct |
139 ms |
18416 KB |
Output is correct |
58 |
Correct |
78 ms |
18408 KB |
Output is correct |
59 |
Correct |
160 ms |
18220 KB |
Output is correct |
60 |
Correct |
110 ms |
18284 KB |
Output is correct |
61 |
Correct |
132 ms |
18304 KB |
Output is correct |
62 |
Correct |
161 ms |
18368 KB |
Output is correct |
63 |
Correct |
158 ms |
18364 KB |
Output is correct |
64 |
Correct |
156 ms |
18296 KB |
Output is correct |
65 |
Correct |
124 ms |
18680 KB |
Output is correct |
66 |
Correct |
153 ms |
18436 KB |
Output is correct |
67 |
Correct |
158 ms |
18368 KB |
Output is correct |
68 |
Correct |
163 ms |
18376 KB |
Output is correct |
69 |
Correct |
0 ms |
344 KB |
Output is correct |
70 |
Correct |
0 ms |
348 KB |
Output is correct |
71 |
Correct |
152 ms |
18240 KB |
Output is correct |
72 |
Correct |
154 ms |
18364 KB |
Output is correct |
73 |
Correct |
152 ms |
18284 KB |
Output is correct |
74 |
Correct |
0 ms |
348 KB |
Output is correct |
75 |
Correct |
0 ms |
348 KB |
Output is correct |
76 |
Correct |
0 ms |
348 KB |
Output is correct |
77 |
Correct |
0 ms |
348 KB |
Output is correct |
78 |
Correct |
506 ms |
48176 KB |
Output is correct |
79 |
Correct |
309 ms |
21448 KB |
Output is correct |
80 |
Correct |
507 ms |
48012 KB |
Output is correct |
81 |
Correct |
149 ms |
18452 KB |
Output is correct |
82 |
Correct |
519 ms |
48072 KB |
Output is correct |
83 |
Correct |
428 ms |
32864 KB |
Output is correct |
84 |
Correct |
0 ms |
344 KB |
Output is correct |
85 |
Correct |
0 ms |
348 KB |
Output is correct |
86 |
Correct |
0 ms |
348 KB |
Output is correct |
87 |
Correct |
1 ms |
348 KB |
Output is correct |
88 |
Correct |
3 ms |
856 KB |
Output is correct |
89 |
Correct |
2 ms |
860 KB |
Output is correct |
90 |
Correct |
2 ms |
860 KB |
Output is correct |
91 |
Correct |
2 ms |
600 KB |
Output is correct |
92 |
Correct |
2 ms |
604 KB |
Output is correct |
93 |
Correct |
2 ms |
856 KB |
Output is correct |
94 |
Correct |
2 ms |
600 KB |
Output is correct |
95 |
Correct |
2 ms |
604 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 |
2 ms |
860 KB |
Output is correct |
100 |
Correct |
2 ms |
860 KB |
Output is correct |
101 |
Correct |
29 ms |
4700 KB |
Output is correct |
102 |
Correct |
21 ms |
2652 KB |
Output is correct |
103 |
Correct |
521 ms |
48148 KB |
Output is correct |
104 |
Correct |
447 ms |
48068 KB |
Output is correct |
105 |
Correct |
354 ms |
34756 KB |
Output is correct |
106 |
Correct |
501 ms |
48068 KB |
Output is correct |
107 |
Correct |
241 ms |
22212 KB |
Output is correct |
108 |
Correct |
330 ms |
25288 KB |
Output is correct |
109 |
Correct |
118 ms |
18616 KB |
Output is correct |
110 |
Correct |
159 ms |
18216 KB |
Output is correct |
111 |
Correct |
454 ms |
44484 KB |
Output is correct |
112 |
Correct |
436 ms |
41160 KB |
Output is correct |
113 |
Correct |
343 ms |
22536 KB |
Output is correct |
114 |
Correct |
523 ms |
48076 KB |
Output is correct |
115 |
Correct |
522 ms |
48032 KB |
Output is correct |