#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
struct BIT{
vector<int> bit;
int n;
BIT(int sz){
n = sz + 5;
bit.assign(n,0);
}
void upd(int pos,int val){
for(;pos<n;pos += pos & -pos){
bit[pos] += val;
}
}
int get(int pos){
int ret = 0;
for(;pos > 0;pos -= pos & -pos){
ret += bit[pos];
}
return ret;
}
int get(int l,int r){
return get(r) - get(l-1);
}
};
long long count_swaps(vector<int> a){
int n = a.size()/2;
long long ans = 0;
BIT bt(2*n);
set<int> s;
set<int> pos[n+1][2];
for(int i = 0;i<2*n;i++){
s.insert(i);
pos[abs(a[i])][a[i] > 0].insert(i);
}
for(int i = 0;i<n;i++){
int val1 = 1e9;
int val2 = 1e9;
int num1 = a[*s.begin()];
int num2 = a[*next(s.begin())];
int pos1 = *s.begin() + bt.get(*s.begin() + 1,2*n);
int pos2 = *next(s.begin()) + bt.get(*next(s.begin()) + 1,2*n);
int pos3 = *pos[abs(num1)][num1 < 0].begin() + bt.get(*pos[abs(num1)][num1 < 0].begin() + 1,2*n);
int pos4 = *pos[abs(num2)][num2 < 0].begin() + bt.get(*pos[abs(num2)][num2 < 0].begin() + 1,2*n);
//cout << pos1 << ' ' << pos2 << ' ' << pos3 << ' ' << pos4 << endl;
val1 = pos3 - pos1 - 1 + (num1 > 0);
if(pos2 < pos4)
val2 = pos4 - (pos2-1) + (num2 > 0);
//cout << val1 << ' ' << val2 << endl;
if(val1 < val2){
ans += val1;
int x = *s.begin();
int y = *pos[abs(num1)][num1 < 0].begin();
s.erase(x);
s.erase(y);
bt.upd(x + 1,1);
bt.upd(y + 1,1);
pos[abs(a[x])][a[x] > 0].erase(x);
pos[abs(a[y])][a[y] > 0].erase(y);
}
else{
ans += val2;
int x = *next(s.begin());
int y = *pos[abs(num2)][num2 < 0].begin();
s.erase(x);
s.erase(y);
bt.upd(x + 1,1);
bt.upd(y + 1,1);
pos[abs(a[x])][a[x] > 0].erase(x);
pos[abs(a[y])][a[y] > 0].erase(y);
}
}
return ans;
}
# |
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 |
0 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 |
0 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 |
1 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 |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
0 ms |
212 KB |
Output is correct |
20 |
Correct |
0 ms |
212 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
22 |
Correct |
0 ms |
212 KB |
Output is correct |
23 |
Correct |
0 ms |
212 KB |
Output is correct |
24 |
Correct |
0 ms |
212 KB |
Output is correct |
25 |
Correct |
0 ms |
212 KB |
Output is correct |
26 |
Correct |
0 ms |
212 KB |
Output is correct |
27 |
Correct |
0 ms |
212 KB |
Output is correct |
28 |
Correct |
0 ms |
212 KB |
Output is correct |
29 |
Correct |
0 ms |
212 KB |
Output is correct |
30 |
Correct |
0 ms |
212 KB |
Output is correct |
31 |
Correct |
1 ms |
212 KB |
Output is correct |
32 |
Correct |
0 ms |
212 KB |
Output is correct |
33 |
Correct |
1 ms |
212 KB |
Output is correct |
34 |
Correct |
0 ms |
212 KB |
Output is correct |
35 |
Correct |
0 ms |
212 KB |
Output is correct |
36 |
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 |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
0 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 |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 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 |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
212 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
468 KB |
Output is correct |
19 |
Correct |
1 ms |
596 KB |
Output is correct |
20 |
Correct |
10 ms |
3324 KB |
Output is correct |
21 |
Correct |
10 ms |
3284 KB |
Output is correct |
22 |
Correct |
125 ms |
30820 KB |
Output is correct |
23 |
Correct |
120 ms |
30820 KB |
Output is correct |
24 |
Correct |
121 ms |
30820 KB |
Output is correct |
25 |
Correct |
120 ms |
30796 KB |
Output is correct |
26 |
Correct |
136 ms |
30804 KB |
Output is correct |
27 |
Correct |
118 ms |
30780 KB |
Output is correct |
28 |
Correct |
120 ms |
30820 KB |
Output is correct |
29 |
Correct |
124 ms |
30704 KB |
Output is correct |
30 |
Correct |
122 ms |
30816 KB |
Output is correct |
31 |
Correct |
125 ms |
30804 KB |
Output is correct |
32 |
Correct |
120 ms |
30816 KB |
Output is correct |
33 |
Correct |
121 ms |
30700 KB |
Output is correct |
34 |
Correct |
120 ms |
30712 KB |
Output is correct |
35 |
Correct |
0 ms |
212 KB |
Output is correct |
36 |
Correct |
0 ms |
212 KB |
Output is correct |
37 |
Correct |
122 ms |
30804 KB |
Output is correct |
38 |
Correct |
122 ms |
30696 KB |
Output is correct |
39 |
Correct |
121 ms |
30720 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 |
129 ms |
30884 KB |
Output is correct |
6 |
Correct |
140 ms |
30780 KB |
Output is correct |
7 |
Correct |
119 ms |
30728 KB |
Output is correct |
8 |
Correct |
121 ms |
30808 KB |
Output is correct |
9 |
Correct |
120 ms |
30748 KB |
Output is correct |
10 |
Correct |
123 ms |
30756 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 |
0 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 |
0 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 |
1 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 |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
0 ms |
212 KB |
Output is correct |
20 |
Correct |
0 ms |
212 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
22 |
Correct |
0 ms |
212 KB |
Output is correct |
23 |
Correct |
0 ms |
212 KB |
Output is correct |
24 |
Correct |
0 ms |
212 KB |
Output is correct |
25 |
Correct |
0 ms |
212 KB |
Output is correct |
26 |
Correct |
0 ms |
212 KB |
Output is correct |
27 |
Correct |
0 ms |
212 KB |
Output is correct |
28 |
Correct |
0 ms |
212 KB |
Output is correct |
29 |
Correct |
0 ms |
212 KB |
Output is correct |
30 |
Correct |
0 ms |
212 KB |
Output is correct |
31 |
Correct |
1 ms |
212 KB |
Output is correct |
32 |
Correct |
0 ms |
212 KB |
Output is correct |
33 |
Correct |
1 ms |
212 KB |
Output is correct |
34 |
Correct |
0 ms |
212 KB |
Output is correct |
35 |
Correct |
0 ms |
212 KB |
Output is correct |
36 |
Correct |
0 ms |
212 KB |
Output is correct |
37 |
Correct |
1 ms |
212 KB |
Output is correct |
38 |
Correct |
0 ms |
212 KB |
Output is correct |
39 |
Correct |
0 ms |
212 KB |
Output is correct |
40 |
Correct |
0 ms |
340 KB |
Output is correct |
41 |
Correct |
1 ms |
596 KB |
Output is correct |
42 |
Correct |
1 ms |
596 KB |
Output is correct |
43 |
Correct |
1 ms |
596 KB |
Output is correct |
44 |
Correct |
1 ms |
596 KB |
Output is correct |
45 |
Correct |
1 ms |
596 KB |
Output is correct |
46 |
Correct |
1 ms |
596 KB |
Output is correct |
47 |
Correct |
2 ms |
596 KB |
Output is correct |
48 |
Correct |
1 ms |
468 KB |
Output is correct |
49 |
Correct |
1 ms |
596 KB |
Output is correct |
50 |
Correct |
1 ms |
596 KB |
Output is correct |
51 |
Correct |
1 ms |
468 KB |
Output is correct |
52 |
Correct |
1 ms |
468 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 |
0 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 |
0 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 |
1 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 |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
0 ms |
212 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
0 ms |
212 KB |
Output is correct |
20 |
Correct |
0 ms |
212 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
22 |
Correct |
0 ms |
212 KB |
Output is correct |
23 |
Correct |
0 ms |
212 KB |
Output is correct |
24 |
Correct |
0 ms |
212 KB |
Output is correct |
25 |
Correct |
0 ms |
212 KB |
Output is correct |
26 |
Correct |
0 ms |
212 KB |
Output is correct |
27 |
Correct |
0 ms |
212 KB |
Output is correct |
28 |
Correct |
0 ms |
212 KB |
Output is correct |
29 |
Correct |
0 ms |
212 KB |
Output is correct |
30 |
Correct |
0 ms |
212 KB |
Output is correct |
31 |
Correct |
1 ms |
212 KB |
Output is correct |
32 |
Correct |
0 ms |
212 KB |
Output is correct |
33 |
Correct |
1 ms |
212 KB |
Output is correct |
34 |
Correct |
0 ms |
212 KB |
Output is correct |
35 |
Correct |
0 ms |
212 KB |
Output is correct |
36 |
Correct |
0 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 |
0 ms |
212 KB |
Output is correct |
40 |
Correct |
0 ms |
212 KB |
Output is correct |
41 |
Correct |
0 ms |
212 KB |
Output is correct |
42 |
Correct |
0 ms |
212 KB |
Output is correct |
43 |
Correct |
0 ms |
212 KB |
Output is correct |
44 |
Correct |
0 ms |
212 KB |
Output is correct |
45 |
Correct |
0 ms |
212 KB |
Output is correct |
46 |
Correct |
0 ms |
212 KB |
Output is correct |
47 |
Correct |
1 ms |
212 KB |
Output is correct |
48 |
Correct |
0 ms |
212 KB |
Output is correct |
49 |
Correct |
0 ms |
212 KB |
Output is correct |
50 |
Correct |
0 ms |
212 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
1 ms |
468 KB |
Output is correct |
53 |
Correct |
1 ms |
596 KB |
Output is correct |
54 |
Correct |
10 ms |
3324 KB |
Output is correct |
55 |
Correct |
10 ms |
3284 KB |
Output is correct |
56 |
Correct |
125 ms |
30820 KB |
Output is correct |
57 |
Correct |
120 ms |
30820 KB |
Output is correct |
58 |
Correct |
121 ms |
30820 KB |
Output is correct |
59 |
Correct |
120 ms |
30796 KB |
Output is correct |
60 |
Correct |
136 ms |
30804 KB |
Output is correct |
61 |
Correct |
118 ms |
30780 KB |
Output is correct |
62 |
Correct |
120 ms |
30820 KB |
Output is correct |
63 |
Correct |
124 ms |
30704 KB |
Output is correct |
64 |
Correct |
122 ms |
30816 KB |
Output is correct |
65 |
Correct |
125 ms |
30804 KB |
Output is correct |
66 |
Correct |
120 ms |
30816 KB |
Output is correct |
67 |
Correct |
121 ms |
30700 KB |
Output is correct |
68 |
Correct |
120 ms |
30712 KB |
Output is correct |
69 |
Correct |
0 ms |
212 KB |
Output is correct |
70 |
Correct |
0 ms |
212 KB |
Output is correct |
71 |
Correct |
122 ms |
30804 KB |
Output is correct |
72 |
Correct |
122 ms |
30696 KB |
Output is correct |
73 |
Correct |
121 ms |
30720 KB |
Output is correct |
74 |
Correct |
0 ms |
212 KB |
Output is correct |
75 |
Correct |
0 ms |
212 KB |
Output is correct |
76 |
Correct |
0 ms |
212 KB |
Output is correct |
77 |
Correct |
0 ms |
212 KB |
Output is correct |
78 |
Correct |
129 ms |
30884 KB |
Output is correct |
79 |
Correct |
140 ms |
30780 KB |
Output is correct |
80 |
Correct |
119 ms |
30728 KB |
Output is correct |
81 |
Correct |
121 ms |
30808 KB |
Output is correct |
82 |
Correct |
120 ms |
30748 KB |
Output is correct |
83 |
Correct |
123 ms |
30756 KB |
Output is correct |
84 |
Correct |
1 ms |
212 KB |
Output is correct |
85 |
Correct |
0 ms |
212 KB |
Output is correct |
86 |
Correct |
0 ms |
212 KB |
Output is correct |
87 |
Correct |
0 ms |
340 KB |
Output is correct |
88 |
Correct |
1 ms |
596 KB |
Output is correct |
89 |
Correct |
1 ms |
596 KB |
Output is correct |
90 |
Correct |
1 ms |
596 KB |
Output is correct |
91 |
Correct |
1 ms |
596 KB |
Output is correct |
92 |
Correct |
1 ms |
596 KB |
Output is correct |
93 |
Correct |
1 ms |
596 KB |
Output is correct |
94 |
Correct |
2 ms |
596 KB |
Output is correct |
95 |
Correct |
1 ms |
468 KB |
Output is correct |
96 |
Correct |
1 ms |
596 KB |
Output is correct |
97 |
Correct |
1 ms |
596 KB |
Output is correct |
98 |
Correct |
1 ms |
468 KB |
Output is correct |
99 |
Correct |
1 ms |
468 KB |
Output is correct |
100 |
Correct |
1 ms |
596 KB |
Output is correct |
101 |
Correct |
10 ms |
3284 KB |
Output is correct |
102 |
Correct |
12 ms |
3276 KB |
Output is correct |
103 |
Correct |
167 ms |
30784 KB |
Output is correct |
104 |
Correct |
109 ms |
30844 KB |
Output is correct |
105 |
Correct |
149 ms |
30816 KB |
Output is correct |
106 |
Correct |
118 ms |
30816 KB |
Output is correct |
107 |
Correct |
143 ms |
30796 KB |
Output is correct |
108 |
Correct |
128 ms |
30764 KB |
Output is correct |
109 |
Correct |
124 ms |
30820 KB |
Output is correct |
110 |
Correct |
127 ms |
30828 KB |
Output is correct |
111 |
Correct |
133 ms |
30740 KB |
Output is correct |
112 |
Correct |
151 ms |
30796 KB |
Output is correct |
113 |
Correct |
186 ms |
30992 KB |
Output is correct |
114 |
Correct |
129 ms |
30784 KB |
Output is correct |
115 |
Correct |
119 ms |
30812 KB |
Output is correct |