#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 2e5;
int S[MAXN+10], N;
vector<int> pos[MAXN+10];
bool vis[MAXN+10];
ll ans;
int tree[MAXN+10];
void update(int i) { for(; i<=N*2; i+=(i&-i)) tree[i]++; }
int query(int i) { int ret=0; for(; i>0; i-=(i&-i)) ret+=tree[i]; return ret; }
int query(int l, int r) { return query(r)-query(l-1); }
ll count_swaps(vector<int> _S)
{
int i, j;
N=_S.size()/2;
for(i=1; i<=2*N; i++) S[i]=_S[i-1];
for(i=2*N; i>=1; i--) pos[S[i]+N].push_back(i);
for(i=1; i<=2*N; i++)
{
if(vis[i]) continue;
int j=pos[-S[i]+N].back();
ans+=j-i-1-query(i, j);
pos[S[i]+N].pop_back(); pos[-S[i]+N].pop_back();
vis[i]=true; vis[j]=true;
update(i); update(j);
if(S[i]>0) ans++;
}
return ans;
}
Compilation message
shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:23:9: warning: unused variable 'j' [-Wunused-variable]
int i, j;
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
4988 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
4988 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
3 |
Correct |
6 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
6 ms |
4984 KB |
Output is correct |
6 |
Correct |
6 ms |
4984 KB |
Output is correct |
7 |
Correct |
6 ms |
4984 KB |
Output is correct |
8 |
Correct |
6 ms |
4984 KB |
Output is correct |
9 |
Correct |
12 ms |
4984 KB |
Output is correct |
10 |
Correct |
7 ms |
4984 KB |
Output is correct |
11 |
Correct |
10 ms |
5112 KB |
Output is correct |
12 |
Correct |
6 ms |
4984 KB |
Output is correct |
13 |
Correct |
6 ms |
4984 KB |
Output is correct |
14 |
Correct |
6 ms |
5060 KB |
Output is correct |
15 |
Correct |
7 ms |
4984 KB |
Output is correct |
16 |
Correct |
6 ms |
4984 KB |
Output is correct |
17 |
Correct |
7 ms |
4984 KB |
Output is correct |
18 |
Correct |
7 ms |
4984 KB |
Output is correct |
19 |
Correct |
6 ms |
4984 KB |
Output is correct |
20 |
Correct |
6 ms |
4984 KB |
Output is correct |
21 |
Correct |
6 ms |
4984 KB |
Output is correct |
22 |
Correct |
6 ms |
4988 KB |
Output is correct |
23 |
Correct |
13 ms |
5112 KB |
Output is correct |
24 |
Correct |
7 ms |
4984 KB |
Output is correct |
25 |
Correct |
7 ms |
4984 KB |
Output is correct |
26 |
Correct |
7 ms |
4984 KB |
Output is correct |
27 |
Correct |
8 ms |
4988 KB |
Output is correct |
28 |
Correct |
7 ms |
5112 KB |
Output is correct |
29 |
Correct |
6 ms |
4984 KB |
Output is correct |
30 |
Correct |
7 ms |
4984 KB |
Output is correct |
31 |
Correct |
7 ms |
4984 KB |
Output is correct |
32 |
Correct |
6 ms |
4984 KB |
Output is correct |
33 |
Correct |
6 ms |
4984 KB |
Output is correct |
34 |
Correct |
6 ms |
4984 KB |
Output is correct |
35 |
Correct |
6 ms |
4984 KB |
Output is correct |
36 |
Correct |
6 ms |
4984 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
4988 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
3 |
Correct |
7 ms |
5004 KB |
Output is correct |
4 |
Correct |
6 ms |
5032 KB |
Output is correct |
5 |
Correct |
6 ms |
4984 KB |
Output is correct |
6 |
Correct |
6 ms |
4960 KB |
Output is correct |
7 |
Correct |
5 ms |
4988 KB |
Output is correct |
8 |
Correct |
4 ms |
4984 KB |
Output is correct |
9 |
Correct |
6 ms |
4956 KB |
Output is correct |
10 |
Correct |
6 ms |
4984 KB |
Output is correct |
11 |
Correct |
6 ms |
4984 KB |
Output is correct |
12 |
Correct |
3 ms |
4984 KB |
Output is correct |
13 |
Correct |
6 ms |
4984 KB |
Output is correct |
14 |
Correct |
6 ms |
4988 KB |
Output is correct |
15 |
Correct |
8 ms |
4984 KB |
Output is correct |
16 |
Correct |
8 ms |
5112 KB |
Output is correct |
17 |
Correct |
6 ms |
5112 KB |
Output is correct |
18 |
Correct |
8 ms |
5112 KB |
Output is correct |
19 |
Correct |
7 ms |
5112 KB |
Output is correct |
20 |
Correct |
10 ms |
5496 KB |
Output is correct |
21 |
Correct |
14 ms |
5496 KB |
Output is correct |
22 |
Correct |
45 ms |
9340 KB |
Output is correct |
23 |
Correct |
40 ms |
9340 KB |
Output is correct |
24 |
Correct |
45 ms |
9236 KB |
Output is correct |
25 |
Correct |
42 ms |
9200 KB |
Output is correct |
26 |
Correct |
46 ms |
10564 KB |
Output is correct |
27 |
Correct |
40 ms |
10456 KB |
Output is correct |
28 |
Correct |
44 ms |
10568 KB |
Output is correct |
29 |
Correct |
45 ms |
10504 KB |
Output is correct |
30 |
Correct |
43 ms |
10480 KB |
Output is correct |
31 |
Correct |
46 ms |
10500 KB |
Output is correct |
32 |
Correct |
43 ms |
10604 KB |
Output is correct |
33 |
Correct |
43 ms |
10352 KB |
Output is correct |
34 |
Correct |
43 ms |
10476 KB |
Output is correct |
35 |
Correct |
6 ms |
4984 KB |
Output is correct |
36 |
Correct |
6 ms |
4984 KB |
Output is correct |
37 |
Correct |
44 ms |
10524 KB |
Output is correct |
38 |
Correct |
44 ms |
10604 KB |
Output is correct |
39 |
Correct |
44 ms |
10604 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
4972 KB |
Output is correct |
2 |
Correct |
7 ms |
4984 KB |
Output is correct |
3 |
Correct |
4 ms |
4984 KB |
Output is correct |
4 |
Correct |
7 ms |
4984 KB |
Output is correct |
5 |
Correct |
106 ms |
14656 KB |
Output is correct |
6 |
Correct |
67 ms |
10980 KB |
Output is correct |
7 |
Correct |
96 ms |
15864 KB |
Output is correct |
8 |
Correct |
49 ms |
10548 KB |
Output is correct |
9 |
Correct |
259 ms |
15868 KB |
Output is correct |
10 |
Correct |
89 ms |
12792 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
4988 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
3 |
Correct |
6 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
6 ms |
4984 KB |
Output is correct |
6 |
Correct |
6 ms |
4984 KB |
Output is correct |
7 |
Correct |
6 ms |
4984 KB |
Output is correct |
8 |
Correct |
6 ms |
4984 KB |
Output is correct |
9 |
Correct |
12 ms |
4984 KB |
Output is correct |
10 |
Correct |
7 ms |
4984 KB |
Output is correct |
11 |
Correct |
10 ms |
5112 KB |
Output is correct |
12 |
Correct |
6 ms |
4984 KB |
Output is correct |
13 |
Correct |
6 ms |
4984 KB |
Output is correct |
14 |
Correct |
6 ms |
5060 KB |
Output is correct |
15 |
Correct |
7 ms |
4984 KB |
Output is correct |
16 |
Correct |
6 ms |
4984 KB |
Output is correct |
17 |
Correct |
7 ms |
4984 KB |
Output is correct |
18 |
Correct |
7 ms |
4984 KB |
Output is correct |
19 |
Correct |
6 ms |
4984 KB |
Output is correct |
20 |
Correct |
6 ms |
4984 KB |
Output is correct |
21 |
Correct |
6 ms |
4984 KB |
Output is correct |
22 |
Correct |
6 ms |
4988 KB |
Output is correct |
23 |
Correct |
13 ms |
5112 KB |
Output is correct |
24 |
Correct |
7 ms |
4984 KB |
Output is correct |
25 |
Correct |
7 ms |
4984 KB |
Output is correct |
26 |
Correct |
7 ms |
4984 KB |
Output is correct |
27 |
Correct |
8 ms |
4988 KB |
Output is correct |
28 |
Correct |
7 ms |
5112 KB |
Output is correct |
29 |
Correct |
6 ms |
4984 KB |
Output is correct |
30 |
Correct |
7 ms |
4984 KB |
Output is correct |
31 |
Correct |
7 ms |
4984 KB |
Output is correct |
32 |
Correct |
6 ms |
4984 KB |
Output is correct |
33 |
Correct |
6 ms |
4984 KB |
Output is correct |
34 |
Correct |
6 ms |
4984 KB |
Output is correct |
35 |
Correct |
6 ms |
4984 KB |
Output is correct |
36 |
Correct |
6 ms |
4984 KB |
Output is correct |
37 |
Correct |
6 ms |
4984 KB |
Output is correct |
38 |
Correct |
6 ms |
4956 KB |
Output is correct |
39 |
Correct |
6 ms |
4984 KB |
Output is correct |
40 |
Correct |
6 ms |
4984 KB |
Output is correct |
41 |
Correct |
7 ms |
5112 KB |
Output is correct |
42 |
Correct |
7 ms |
5112 KB |
Output is correct |
43 |
Correct |
6 ms |
5108 KB |
Output is correct |
44 |
Correct |
8 ms |
5116 KB |
Output is correct |
45 |
Correct |
6 ms |
5240 KB |
Output is correct |
46 |
Correct |
7 ms |
5112 KB |
Output is correct |
47 |
Correct |
7 ms |
5112 KB |
Output is correct |
48 |
Correct |
7 ms |
5088 KB |
Output is correct |
49 |
Correct |
6 ms |
5112 KB |
Output is correct |
50 |
Correct |
6 ms |
4984 KB |
Output is correct |
51 |
Correct |
6 ms |
4984 KB |
Output is correct |
52 |
Correct |
7 ms |
5112 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
4988 KB |
Output is correct |
2 |
Correct |
6 ms |
4984 KB |
Output is correct |
3 |
Correct |
6 ms |
4984 KB |
Output is correct |
4 |
Correct |
6 ms |
4984 KB |
Output is correct |
5 |
Correct |
6 ms |
4984 KB |
Output is correct |
6 |
Correct |
6 ms |
4984 KB |
Output is correct |
7 |
Correct |
6 ms |
4984 KB |
Output is correct |
8 |
Correct |
6 ms |
4984 KB |
Output is correct |
9 |
Correct |
12 ms |
4984 KB |
Output is correct |
10 |
Correct |
7 ms |
4984 KB |
Output is correct |
11 |
Correct |
10 ms |
5112 KB |
Output is correct |
12 |
Correct |
6 ms |
4984 KB |
Output is correct |
13 |
Correct |
6 ms |
4984 KB |
Output is correct |
14 |
Correct |
6 ms |
5060 KB |
Output is correct |
15 |
Correct |
7 ms |
4984 KB |
Output is correct |
16 |
Correct |
6 ms |
4984 KB |
Output is correct |
17 |
Correct |
7 ms |
4984 KB |
Output is correct |
18 |
Correct |
7 ms |
4984 KB |
Output is correct |
19 |
Correct |
6 ms |
4984 KB |
Output is correct |
20 |
Correct |
6 ms |
4984 KB |
Output is correct |
21 |
Correct |
6 ms |
4984 KB |
Output is correct |
22 |
Correct |
6 ms |
4988 KB |
Output is correct |
23 |
Correct |
13 ms |
5112 KB |
Output is correct |
24 |
Correct |
7 ms |
4984 KB |
Output is correct |
25 |
Correct |
7 ms |
4984 KB |
Output is correct |
26 |
Correct |
7 ms |
4984 KB |
Output is correct |
27 |
Correct |
8 ms |
4988 KB |
Output is correct |
28 |
Correct |
7 ms |
5112 KB |
Output is correct |
29 |
Correct |
6 ms |
4984 KB |
Output is correct |
30 |
Correct |
7 ms |
4984 KB |
Output is correct |
31 |
Correct |
7 ms |
4984 KB |
Output is correct |
32 |
Correct |
6 ms |
4984 KB |
Output is correct |
33 |
Correct |
6 ms |
4984 KB |
Output is correct |
34 |
Correct |
6 ms |
4984 KB |
Output is correct |
35 |
Correct |
6 ms |
4984 KB |
Output is correct |
36 |
Correct |
6 ms |
4984 KB |
Output is correct |
37 |
Correct |
7 ms |
5004 KB |
Output is correct |
38 |
Correct |
6 ms |
5032 KB |
Output is correct |
39 |
Correct |
6 ms |
4984 KB |
Output is correct |
40 |
Correct |
6 ms |
4960 KB |
Output is correct |
41 |
Correct |
5 ms |
4988 KB |
Output is correct |
42 |
Correct |
4 ms |
4984 KB |
Output is correct |
43 |
Correct |
6 ms |
4956 KB |
Output is correct |
44 |
Correct |
6 ms |
4984 KB |
Output is correct |
45 |
Correct |
6 ms |
4984 KB |
Output is correct |
46 |
Correct |
3 ms |
4984 KB |
Output is correct |
47 |
Correct |
6 ms |
4984 KB |
Output is correct |
48 |
Correct |
6 ms |
4988 KB |
Output is correct |
49 |
Correct |
8 ms |
4984 KB |
Output is correct |
50 |
Correct |
8 ms |
5112 KB |
Output is correct |
51 |
Correct |
6 ms |
5112 KB |
Output is correct |
52 |
Correct |
8 ms |
5112 KB |
Output is correct |
53 |
Correct |
7 ms |
5112 KB |
Output is correct |
54 |
Correct |
10 ms |
5496 KB |
Output is correct |
55 |
Correct |
14 ms |
5496 KB |
Output is correct |
56 |
Correct |
45 ms |
9340 KB |
Output is correct |
57 |
Correct |
40 ms |
9340 KB |
Output is correct |
58 |
Correct |
45 ms |
9236 KB |
Output is correct |
59 |
Correct |
42 ms |
9200 KB |
Output is correct |
60 |
Correct |
46 ms |
10564 KB |
Output is correct |
61 |
Correct |
40 ms |
10456 KB |
Output is correct |
62 |
Correct |
44 ms |
10568 KB |
Output is correct |
63 |
Correct |
45 ms |
10504 KB |
Output is correct |
64 |
Correct |
43 ms |
10480 KB |
Output is correct |
65 |
Correct |
46 ms |
10500 KB |
Output is correct |
66 |
Correct |
43 ms |
10604 KB |
Output is correct |
67 |
Correct |
43 ms |
10352 KB |
Output is correct |
68 |
Correct |
43 ms |
10476 KB |
Output is correct |
69 |
Correct |
6 ms |
4984 KB |
Output is correct |
70 |
Correct |
6 ms |
4984 KB |
Output is correct |
71 |
Correct |
44 ms |
10524 KB |
Output is correct |
72 |
Correct |
44 ms |
10604 KB |
Output is correct |
73 |
Correct |
44 ms |
10604 KB |
Output is correct |
74 |
Correct |
5 ms |
4972 KB |
Output is correct |
75 |
Correct |
7 ms |
4984 KB |
Output is correct |
76 |
Correct |
4 ms |
4984 KB |
Output is correct |
77 |
Correct |
7 ms |
4984 KB |
Output is correct |
78 |
Correct |
106 ms |
14656 KB |
Output is correct |
79 |
Correct |
67 ms |
10980 KB |
Output is correct |
80 |
Correct |
96 ms |
15864 KB |
Output is correct |
81 |
Correct |
49 ms |
10548 KB |
Output is correct |
82 |
Correct |
259 ms |
15868 KB |
Output is correct |
83 |
Correct |
89 ms |
12792 KB |
Output is correct |
84 |
Correct |
6 ms |
4984 KB |
Output is correct |
85 |
Correct |
6 ms |
4956 KB |
Output is correct |
86 |
Correct |
6 ms |
4984 KB |
Output is correct |
87 |
Correct |
6 ms |
4984 KB |
Output is correct |
88 |
Correct |
7 ms |
5112 KB |
Output is correct |
89 |
Correct |
7 ms |
5112 KB |
Output is correct |
90 |
Correct |
6 ms |
5108 KB |
Output is correct |
91 |
Correct |
8 ms |
5116 KB |
Output is correct |
92 |
Correct |
6 ms |
5240 KB |
Output is correct |
93 |
Correct |
7 ms |
5112 KB |
Output is correct |
94 |
Correct |
7 ms |
5112 KB |
Output is correct |
95 |
Correct |
7 ms |
5088 KB |
Output is correct |
96 |
Correct |
6 ms |
5112 KB |
Output is correct |
97 |
Correct |
6 ms |
4984 KB |
Output is correct |
98 |
Correct |
6 ms |
4984 KB |
Output is correct |
99 |
Correct |
7 ms |
5112 KB |
Output is correct |
100 |
Correct |
7 ms |
5112 KB |
Output is correct |
101 |
Correct |
13 ms |
6008 KB |
Output is correct |
102 |
Correct |
12 ms |
5752 KB |
Output is correct |
103 |
Correct |
125 ms |
15900 KB |
Output is correct |
104 |
Correct |
93 ms |
15836 KB |
Output is correct |
105 |
Correct |
108 ms |
13112 KB |
Output is correct |
106 |
Correct |
95 ms |
15864 KB |
Output is correct |
107 |
Correct |
64 ms |
11236 KB |
Output is correct |
108 |
Correct |
80 ms |
11484 KB |
Output is correct |
109 |
Correct |
45 ms |
10548 KB |
Output is correct |
110 |
Correct |
45 ms |
10592 KB |
Output is correct |
111 |
Correct |
99 ms |
15160 KB |
Output is correct |
112 |
Correct |
113 ms |
14504 KB |
Output is correct |
113 |
Correct |
71 ms |
11228 KB |
Output is correct |
114 |
Correct |
95 ms |
15864 KB |
Output is correct |
115 |
Correct |
97 ms |
15844 KB |
Output is correct |