#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define vi vector<int>
#define pb push_back
#define REP(i,n) for(int i = 0; i < n; i++)
#define FOR(i,a,b) for(int i = a; i < b; i++)
int n;
vi a;
ll ans = 0;
bool paired(int ind){
if(ind >= 2*n-1 or ind < 0) return 0;
return (a[ind]+a[ind+1] == 0 and a[ind] < a[ind+1]);
}
int last[200005];
bool exis[200005];
vi gg1[200005],gg2[200005];
int seg[400005];
void upd(int ind,int val){
ind += 2*n;
while(ind){
seg[ind] += val;
ind /= 2;
}
}
int quer(int l,int r){
l += 2*n;
r += 2*n+1;
int res = 0;
while(l < r){
if(l%2) res += seg[l++];
if(r%2) res += seg[--r];
l /= 2;
r /= 2;
}
return res;
}
ll count_swaps(vector<int> s) {
n = s.size()/2;
a = s;
REP(i,2*n){
if(a[i] < 0) gg1[-a[i]].pb(i);
else gg2[a[i]].pb(i);
}
int cur = 1;
FOR(i,1,n+1){
REP(j,(int)gg1[i].size()){
a[gg1[i][j]] = -cur;
a[gg2[i][j]] = cur;
cur++;
}
}
REP(i,2*n){
if(exis[n-a[i]]){
ans += i-last[n-a[i]]-1;
if(a[i] < 0) ans++;
ans -= quer(0,last[n-a[i]]);
upd(last[n-a[i]],1);
upd(i,-1);
exis[n+a[i]] = 0;
exis[n-a[i]] = 0;
}
else{
exis[n+a[i]] = 1;
last[n+a[i]] = i;
}
// cout << i << " " << ans << endl;
}
return ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
9728 KB |
Output is correct |
2 |
Correct |
6 ms |
9728 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
9728 KB |
Output is correct |
2 |
Correct |
6 ms |
9728 KB |
Output is correct |
3 |
Correct |
6 ms |
9728 KB |
Output is correct |
4 |
Correct |
6 ms |
9728 KB |
Output is correct |
5 |
Correct |
6 ms |
9728 KB |
Output is correct |
6 |
Correct |
6 ms |
9728 KB |
Output is correct |
7 |
Correct |
7 ms |
9728 KB |
Output is correct |
8 |
Correct |
6 ms |
9728 KB |
Output is correct |
9 |
Correct |
6 ms |
9728 KB |
Output is correct |
10 |
Correct |
6 ms |
9728 KB |
Output is correct |
11 |
Correct |
6 ms |
9728 KB |
Output is correct |
12 |
Correct |
6 ms |
9728 KB |
Output is correct |
13 |
Correct |
6 ms |
9728 KB |
Output is correct |
14 |
Correct |
6 ms |
9728 KB |
Output is correct |
15 |
Correct |
6 ms |
9728 KB |
Output is correct |
16 |
Correct |
6 ms |
9728 KB |
Output is correct |
17 |
Correct |
6 ms |
9728 KB |
Output is correct |
18 |
Correct |
6 ms |
9728 KB |
Output is correct |
19 |
Correct |
6 ms |
9728 KB |
Output is correct |
20 |
Correct |
6 ms |
9728 KB |
Output is correct |
21 |
Correct |
6 ms |
9728 KB |
Output is correct |
22 |
Correct |
6 ms |
9728 KB |
Output is correct |
23 |
Correct |
6 ms |
9728 KB |
Output is correct |
24 |
Correct |
6 ms |
9728 KB |
Output is correct |
25 |
Correct |
6 ms |
9728 KB |
Output is correct |
26 |
Correct |
6 ms |
9600 KB |
Output is correct |
27 |
Correct |
6 ms |
9728 KB |
Output is correct |
28 |
Correct |
6 ms |
9728 KB |
Output is correct |
29 |
Correct |
6 ms |
9728 KB |
Output is correct |
30 |
Correct |
6 ms |
9728 KB |
Output is correct |
31 |
Correct |
6 ms |
9728 KB |
Output is correct |
32 |
Correct |
6 ms |
9728 KB |
Output is correct |
33 |
Correct |
6 ms |
9728 KB |
Output is correct |
34 |
Correct |
6 ms |
9728 KB |
Output is correct |
35 |
Correct |
6 ms |
9728 KB |
Output is correct |
36 |
Correct |
8 ms |
9728 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
9728 KB |
Output is correct |
2 |
Correct |
6 ms |
9728 KB |
Output is correct |
3 |
Correct |
8 ms |
9728 KB |
Output is correct |
4 |
Correct |
8 ms |
9728 KB |
Output is correct |
5 |
Correct |
6 ms |
9728 KB |
Output is correct |
6 |
Correct |
8 ms |
9728 KB |
Output is correct |
7 |
Correct |
6 ms |
9728 KB |
Output is correct |
8 |
Correct |
6 ms |
9728 KB |
Output is correct |
9 |
Correct |
6 ms |
9728 KB |
Output is correct |
10 |
Correct |
8 ms |
9728 KB |
Output is correct |
11 |
Correct |
6 ms |
9728 KB |
Output is correct |
12 |
Correct |
8 ms |
9728 KB |
Output is correct |
13 |
Correct |
6 ms |
9728 KB |
Output is correct |
14 |
Correct |
6 ms |
9728 KB |
Output is correct |
15 |
Correct |
6 ms |
9728 KB |
Output is correct |
16 |
Correct |
6 ms |
9728 KB |
Output is correct |
17 |
Correct |
6 ms |
9728 KB |
Output is correct |
18 |
Correct |
6 ms |
9728 KB |
Output is correct |
19 |
Correct |
6 ms |
9728 KB |
Output is correct |
20 |
Correct |
11 ms |
10368 KB |
Output is correct |
21 |
Correct |
11 ms |
10368 KB |
Output is correct |
22 |
Correct |
52 ms |
15256 KB |
Output is correct |
23 |
Correct |
50 ms |
16492 KB |
Output is correct |
24 |
Correct |
53 ms |
16876 KB |
Output is correct |
25 |
Correct |
47 ms |
16240 KB |
Output is correct |
26 |
Correct |
53 ms |
16492 KB |
Output is correct |
27 |
Correct |
51 ms |
16364 KB |
Output is correct |
28 |
Correct |
52 ms |
16368 KB |
Output is correct |
29 |
Correct |
48 ms |
16368 KB |
Output is correct |
30 |
Correct |
49 ms |
16380 KB |
Output is correct |
31 |
Correct |
52 ms |
16516 KB |
Output is correct |
32 |
Correct |
49 ms |
16424 KB |
Output is correct |
33 |
Correct |
47 ms |
16240 KB |
Output is correct |
34 |
Correct |
49 ms |
16428 KB |
Output is correct |
35 |
Correct |
6 ms |
9764 KB |
Output is correct |
36 |
Correct |
6 ms |
9728 KB |
Output is correct |
37 |
Correct |
50 ms |
16424 KB |
Output is correct |
38 |
Correct |
51 ms |
16368 KB |
Output is correct |
39 |
Correct |
49 ms |
16368 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
9728 KB |
Output is correct |
2 |
Correct |
6 ms |
9728 KB |
Output is correct |
3 |
Correct |
6 ms |
9728 KB |
Output is correct |
4 |
Correct |
6 ms |
9728 KB |
Output is correct |
5 |
Correct |
86 ms |
20472 KB |
Output is correct |
6 |
Correct |
65 ms |
16760 KB |
Output is correct |
7 |
Correct |
85 ms |
21496 KB |
Output is correct |
8 |
Correct |
51 ms |
16132 KB |
Output is correct |
9 |
Correct |
85 ms |
21476 KB |
Output is correct |
10 |
Correct |
77 ms |
18424 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
9728 KB |
Output is correct |
2 |
Correct |
6 ms |
9728 KB |
Output is correct |
3 |
Correct |
6 ms |
9728 KB |
Output is correct |
4 |
Correct |
6 ms |
9728 KB |
Output is correct |
5 |
Correct |
6 ms |
9728 KB |
Output is correct |
6 |
Correct |
6 ms |
9728 KB |
Output is correct |
7 |
Correct |
7 ms |
9728 KB |
Output is correct |
8 |
Correct |
6 ms |
9728 KB |
Output is correct |
9 |
Correct |
6 ms |
9728 KB |
Output is correct |
10 |
Correct |
6 ms |
9728 KB |
Output is correct |
11 |
Correct |
6 ms |
9728 KB |
Output is correct |
12 |
Correct |
6 ms |
9728 KB |
Output is correct |
13 |
Correct |
6 ms |
9728 KB |
Output is correct |
14 |
Correct |
6 ms |
9728 KB |
Output is correct |
15 |
Correct |
6 ms |
9728 KB |
Output is correct |
16 |
Correct |
6 ms |
9728 KB |
Output is correct |
17 |
Correct |
6 ms |
9728 KB |
Output is correct |
18 |
Correct |
6 ms |
9728 KB |
Output is correct |
19 |
Correct |
6 ms |
9728 KB |
Output is correct |
20 |
Correct |
6 ms |
9728 KB |
Output is correct |
21 |
Correct |
6 ms |
9728 KB |
Output is correct |
22 |
Correct |
6 ms |
9728 KB |
Output is correct |
23 |
Correct |
6 ms |
9728 KB |
Output is correct |
24 |
Correct |
6 ms |
9728 KB |
Output is correct |
25 |
Correct |
6 ms |
9728 KB |
Output is correct |
26 |
Correct |
6 ms |
9600 KB |
Output is correct |
27 |
Correct |
6 ms |
9728 KB |
Output is correct |
28 |
Correct |
6 ms |
9728 KB |
Output is correct |
29 |
Correct |
6 ms |
9728 KB |
Output is correct |
30 |
Correct |
6 ms |
9728 KB |
Output is correct |
31 |
Correct |
6 ms |
9728 KB |
Output is correct |
32 |
Correct |
6 ms |
9728 KB |
Output is correct |
33 |
Correct |
6 ms |
9728 KB |
Output is correct |
34 |
Correct |
6 ms |
9728 KB |
Output is correct |
35 |
Correct |
6 ms |
9728 KB |
Output is correct |
36 |
Correct |
8 ms |
9728 KB |
Output is correct |
37 |
Correct |
6 ms |
9728 KB |
Output is correct |
38 |
Correct |
6 ms |
9728 KB |
Output is correct |
39 |
Correct |
6 ms |
9728 KB |
Output is correct |
40 |
Correct |
6 ms |
9728 KB |
Output is correct |
41 |
Correct |
7 ms |
9856 KB |
Output is correct |
42 |
Correct |
7 ms |
9856 KB |
Output is correct |
43 |
Correct |
7 ms |
9856 KB |
Output is correct |
44 |
Correct |
6 ms |
9864 KB |
Output is correct |
45 |
Correct |
6 ms |
9856 KB |
Output is correct |
46 |
Correct |
6 ms |
9728 KB |
Output is correct |
47 |
Correct |
8 ms |
9728 KB |
Output is correct |
48 |
Correct |
6 ms |
9728 KB |
Output is correct |
49 |
Correct |
7 ms |
9728 KB |
Output is correct |
50 |
Correct |
9 ms |
9728 KB |
Output is correct |
51 |
Correct |
6 ms |
9728 KB |
Output is correct |
52 |
Correct |
6 ms |
9856 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
9728 KB |
Output is correct |
2 |
Correct |
6 ms |
9728 KB |
Output is correct |
3 |
Correct |
6 ms |
9728 KB |
Output is correct |
4 |
Correct |
6 ms |
9728 KB |
Output is correct |
5 |
Correct |
6 ms |
9728 KB |
Output is correct |
6 |
Correct |
6 ms |
9728 KB |
Output is correct |
7 |
Correct |
7 ms |
9728 KB |
Output is correct |
8 |
Correct |
6 ms |
9728 KB |
Output is correct |
9 |
Correct |
6 ms |
9728 KB |
Output is correct |
10 |
Correct |
6 ms |
9728 KB |
Output is correct |
11 |
Correct |
6 ms |
9728 KB |
Output is correct |
12 |
Correct |
6 ms |
9728 KB |
Output is correct |
13 |
Correct |
6 ms |
9728 KB |
Output is correct |
14 |
Correct |
6 ms |
9728 KB |
Output is correct |
15 |
Correct |
6 ms |
9728 KB |
Output is correct |
16 |
Correct |
6 ms |
9728 KB |
Output is correct |
17 |
Correct |
6 ms |
9728 KB |
Output is correct |
18 |
Correct |
6 ms |
9728 KB |
Output is correct |
19 |
Correct |
6 ms |
9728 KB |
Output is correct |
20 |
Correct |
6 ms |
9728 KB |
Output is correct |
21 |
Correct |
6 ms |
9728 KB |
Output is correct |
22 |
Correct |
6 ms |
9728 KB |
Output is correct |
23 |
Correct |
6 ms |
9728 KB |
Output is correct |
24 |
Correct |
6 ms |
9728 KB |
Output is correct |
25 |
Correct |
6 ms |
9728 KB |
Output is correct |
26 |
Correct |
6 ms |
9600 KB |
Output is correct |
27 |
Correct |
6 ms |
9728 KB |
Output is correct |
28 |
Correct |
6 ms |
9728 KB |
Output is correct |
29 |
Correct |
6 ms |
9728 KB |
Output is correct |
30 |
Correct |
6 ms |
9728 KB |
Output is correct |
31 |
Correct |
6 ms |
9728 KB |
Output is correct |
32 |
Correct |
6 ms |
9728 KB |
Output is correct |
33 |
Correct |
6 ms |
9728 KB |
Output is correct |
34 |
Correct |
6 ms |
9728 KB |
Output is correct |
35 |
Correct |
6 ms |
9728 KB |
Output is correct |
36 |
Correct |
8 ms |
9728 KB |
Output is correct |
37 |
Correct |
8 ms |
9728 KB |
Output is correct |
38 |
Correct |
8 ms |
9728 KB |
Output is correct |
39 |
Correct |
6 ms |
9728 KB |
Output is correct |
40 |
Correct |
8 ms |
9728 KB |
Output is correct |
41 |
Correct |
6 ms |
9728 KB |
Output is correct |
42 |
Correct |
6 ms |
9728 KB |
Output is correct |
43 |
Correct |
6 ms |
9728 KB |
Output is correct |
44 |
Correct |
8 ms |
9728 KB |
Output is correct |
45 |
Correct |
6 ms |
9728 KB |
Output is correct |
46 |
Correct |
8 ms |
9728 KB |
Output is correct |
47 |
Correct |
6 ms |
9728 KB |
Output is correct |
48 |
Correct |
6 ms |
9728 KB |
Output is correct |
49 |
Correct |
6 ms |
9728 KB |
Output is correct |
50 |
Correct |
6 ms |
9728 KB |
Output is correct |
51 |
Correct |
6 ms |
9728 KB |
Output is correct |
52 |
Correct |
6 ms |
9728 KB |
Output is correct |
53 |
Correct |
6 ms |
9728 KB |
Output is correct |
54 |
Correct |
11 ms |
10368 KB |
Output is correct |
55 |
Correct |
11 ms |
10368 KB |
Output is correct |
56 |
Correct |
52 ms |
15256 KB |
Output is correct |
57 |
Correct |
50 ms |
16492 KB |
Output is correct |
58 |
Correct |
53 ms |
16876 KB |
Output is correct |
59 |
Correct |
47 ms |
16240 KB |
Output is correct |
60 |
Correct |
53 ms |
16492 KB |
Output is correct |
61 |
Correct |
51 ms |
16364 KB |
Output is correct |
62 |
Correct |
52 ms |
16368 KB |
Output is correct |
63 |
Correct |
48 ms |
16368 KB |
Output is correct |
64 |
Correct |
49 ms |
16380 KB |
Output is correct |
65 |
Correct |
52 ms |
16516 KB |
Output is correct |
66 |
Correct |
49 ms |
16424 KB |
Output is correct |
67 |
Correct |
47 ms |
16240 KB |
Output is correct |
68 |
Correct |
49 ms |
16428 KB |
Output is correct |
69 |
Correct |
6 ms |
9764 KB |
Output is correct |
70 |
Correct |
6 ms |
9728 KB |
Output is correct |
71 |
Correct |
50 ms |
16424 KB |
Output is correct |
72 |
Correct |
51 ms |
16368 KB |
Output is correct |
73 |
Correct |
49 ms |
16368 KB |
Output is correct |
74 |
Correct |
6 ms |
9728 KB |
Output is correct |
75 |
Correct |
6 ms |
9728 KB |
Output is correct |
76 |
Correct |
6 ms |
9728 KB |
Output is correct |
77 |
Correct |
6 ms |
9728 KB |
Output is correct |
78 |
Correct |
86 ms |
20472 KB |
Output is correct |
79 |
Correct |
65 ms |
16760 KB |
Output is correct |
80 |
Correct |
85 ms |
21496 KB |
Output is correct |
81 |
Correct |
51 ms |
16132 KB |
Output is correct |
82 |
Correct |
85 ms |
21476 KB |
Output is correct |
83 |
Correct |
77 ms |
18424 KB |
Output is correct |
84 |
Correct |
6 ms |
9728 KB |
Output is correct |
85 |
Correct |
6 ms |
9728 KB |
Output is correct |
86 |
Correct |
6 ms |
9728 KB |
Output is correct |
87 |
Correct |
6 ms |
9728 KB |
Output is correct |
88 |
Correct |
7 ms |
9856 KB |
Output is correct |
89 |
Correct |
7 ms |
9856 KB |
Output is correct |
90 |
Correct |
7 ms |
9856 KB |
Output is correct |
91 |
Correct |
6 ms |
9864 KB |
Output is correct |
92 |
Correct |
6 ms |
9856 KB |
Output is correct |
93 |
Correct |
6 ms |
9728 KB |
Output is correct |
94 |
Correct |
8 ms |
9728 KB |
Output is correct |
95 |
Correct |
6 ms |
9728 KB |
Output is correct |
96 |
Correct |
7 ms |
9728 KB |
Output is correct |
97 |
Correct |
9 ms |
9728 KB |
Output is correct |
98 |
Correct |
6 ms |
9728 KB |
Output is correct |
99 |
Correct |
6 ms |
9856 KB |
Output is correct |
100 |
Correct |
7 ms |
9856 KB |
Output is correct |
101 |
Correct |
13 ms |
10880 KB |
Output is correct |
102 |
Correct |
12 ms |
10496 KB |
Output is correct |
103 |
Correct |
111 ms |
22136 KB |
Output is correct |
104 |
Correct |
109 ms |
21752 KB |
Output is correct |
105 |
Correct |
98 ms |
19424 KB |
Output is correct |
106 |
Correct |
84 ms |
21752 KB |
Output is correct |
107 |
Correct |
79 ms |
17072 KB |
Output is correct |
108 |
Correct |
75 ms |
17400 KB |
Output is correct |
109 |
Correct |
49 ms |
16752 KB |
Output is correct |
110 |
Correct |
49 ms |
16496 KB |
Output is correct |
111 |
Correct |
85 ms |
20984 KB |
Output is correct |
112 |
Correct |
97 ms |
20728 KB |
Output is correct |
113 |
Correct |
74 ms |
17016 KB |
Output is correct |
114 |
Correct |
88 ms |
21752 KB |
Output is correct |
115 |
Correct |
94 ms |
21708 KB |
Output is correct |