#include "shoes.h"
#include <bits/stdc++.h>
#define IO_OP ios::sync_with_stdio(0), cin.tie(0)
#define F first
#define S second
#define V vector
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(), (v).end()
using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;
const int INF = 1e9 + 7, N = 2e5 + 7;
int bit[N];
void add(int pos, int val) {
for(; pos < N; pos += pos & -pos)
bit[pos] += val;
}
int qry(int pos) {
int res = 0;
for(; pos; pos -= pos & -pos)
res += bit[pos];
return res;
}
ll count_swaps(vi s) {
int n = SZ(s) / 2;
V<vi> posl(n);
V<vi> posr(n);
for(int i = 0; i < n * 2; i++) {
if(s[i] < 0) {
posl[-s[i] - 1].PB(i);
} else {
posr[s[i] - 1].PB(i);
}
}
ll ans = 0;
V<pi> aux;
for(int i = 0; i < n; i++) {
assert(SZ(posl[i]) == SZ(posr[i]));
for(int j = 0; j < SZ(posl[i]); j++) {
if(posl[i][j] > posr[i][j]) {
ans++;
swap(posl[i][j], posr[i][j]);
}
aux.EB(posl[i][j], posr[i][j]);
}
}
sort(ALL(aux));
assert(SZ(aux) == n);
vi p(2 * n);
for(int i = 0; i < n; i++) {
p[aux[i].F] = i * 2 + 1;
p[aux[i].S] = i * 2 + 2;
}
for(int i = 2 * n - 1; i >= 0; i--) {
ans += qry(p[i]);
add(p[i], 1);
}
return ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
308 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
312 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
308 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
304 KB |
Output is correct |
24 |
Correct |
1 ms |
312 KB |
Output is correct |
25 |
Correct |
0 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
312 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
0 ms |
340 KB |
Output is correct |
31 |
Correct |
0 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
340 KB |
Output is correct |
33 |
Correct |
0 ms |
308 KB |
Output is correct |
34 |
Correct |
1 ms |
308 KB |
Output is correct |
35 |
Correct |
1 ms |
312 KB |
Output is correct |
36 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
312 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
312 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
4 ms |
1364 KB |
Output is correct |
21 |
Correct |
4 ms |
1492 KB |
Output is correct |
22 |
Correct |
34 ms |
11024 KB |
Output is correct |
23 |
Correct |
36 ms |
11076 KB |
Output is correct |
24 |
Correct |
35 ms |
11096 KB |
Output is correct |
25 |
Correct |
38 ms |
10796 KB |
Output is correct |
26 |
Correct |
35 ms |
11064 KB |
Output is correct |
27 |
Correct |
30 ms |
10840 KB |
Output is correct |
28 |
Correct |
32 ms |
11056 KB |
Output is correct |
29 |
Correct |
32 ms |
11044 KB |
Output is correct |
30 |
Correct |
30 ms |
11036 KB |
Output is correct |
31 |
Correct |
34 ms |
11068 KB |
Output is correct |
32 |
Correct |
31 ms |
11056 KB |
Output is correct |
33 |
Correct |
30 ms |
10812 KB |
Output is correct |
34 |
Correct |
30 ms |
11036 KB |
Output is correct |
35 |
Correct |
1 ms |
308 KB |
Output is correct |
36 |
Correct |
0 ms |
308 KB |
Output is correct |
37 |
Correct |
30 ms |
11048 KB |
Output is correct |
38 |
Correct |
32 ms |
11048 KB |
Output is correct |
39 |
Correct |
32 ms |
11040 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
57 ms |
16424 KB |
Output is correct |
6 |
Correct |
49 ms |
11688 KB |
Output is correct |
7 |
Correct |
55 ms |
16448 KB |
Output is correct |
8 |
Correct |
37 ms |
11144 KB |
Output is correct |
9 |
Correct |
59 ms |
16424 KB |
Output is correct |
10 |
Correct |
54 ms |
13444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
308 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
312 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
308 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
304 KB |
Output is correct |
24 |
Correct |
1 ms |
312 KB |
Output is correct |
25 |
Correct |
0 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
312 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
0 ms |
340 KB |
Output is correct |
31 |
Correct |
0 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
340 KB |
Output is correct |
33 |
Correct |
0 ms |
308 KB |
Output is correct |
34 |
Correct |
1 ms |
308 KB |
Output is correct |
35 |
Correct |
1 ms |
312 KB |
Output is correct |
36 |
Correct |
1 ms |
340 KB |
Output is correct |
37 |
Correct |
1 ms |
340 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
1 ms |
308 KB |
Output is correct |
40 |
Correct |
1 ms |
316 KB |
Output is correct |
41 |
Correct |
1 ms |
468 KB |
Output is correct |
42 |
Correct |
1 ms |
444 KB |
Output is correct |
43 |
Correct |
1 ms |
444 KB |
Output is correct |
44 |
Correct |
2 ms |
468 KB |
Output is correct |
45 |
Correct |
1 ms |
444 KB |
Output is correct |
46 |
Correct |
1 ms |
340 KB |
Output is correct |
47 |
Correct |
2 ms |
340 KB |
Output is correct |
48 |
Correct |
1 ms |
340 KB |
Output is correct |
49 |
Correct |
1 ms |
444 KB |
Output is correct |
50 |
Correct |
1 ms |
448 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
1 ms |
468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
308 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
312 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
308 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
304 KB |
Output is correct |
24 |
Correct |
1 ms |
312 KB |
Output is correct |
25 |
Correct |
0 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
312 KB |
Output is correct |
29 |
Correct |
0 ms |
340 KB |
Output is correct |
30 |
Correct |
0 ms |
340 KB |
Output is correct |
31 |
Correct |
0 ms |
340 KB |
Output is correct |
32 |
Correct |
1 ms |
340 KB |
Output is correct |
33 |
Correct |
0 ms |
308 KB |
Output is correct |
34 |
Correct |
1 ms |
308 KB |
Output is correct |
35 |
Correct |
1 ms |
312 KB |
Output is correct |
36 |
Correct |
1 ms |
340 KB |
Output is correct |
37 |
Correct |
1 ms |
340 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
1 ms |
340 KB |
Output is correct |
40 |
Correct |
1 ms |
340 KB |
Output is correct |
41 |
Correct |
1 ms |
312 KB |
Output is correct |
42 |
Correct |
1 ms |
340 KB |
Output is correct |
43 |
Correct |
0 ms |
340 KB |
Output is correct |
44 |
Correct |
1 ms |
340 KB |
Output is correct |
45 |
Correct |
0 ms |
340 KB |
Output is correct |
46 |
Correct |
1 ms |
340 KB |
Output is correct |
47 |
Correct |
1 ms |
340 KB |
Output is correct |
48 |
Correct |
1 ms |
212 KB |
Output is correct |
49 |
Correct |
1 ms |
312 KB |
Output is correct |
50 |
Correct |
1 ms |
340 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
1 ms |
340 KB |
Output is correct |
53 |
Correct |
1 ms |
340 KB |
Output is correct |
54 |
Correct |
4 ms |
1364 KB |
Output is correct |
55 |
Correct |
4 ms |
1492 KB |
Output is correct |
56 |
Correct |
34 ms |
11024 KB |
Output is correct |
57 |
Correct |
36 ms |
11076 KB |
Output is correct |
58 |
Correct |
35 ms |
11096 KB |
Output is correct |
59 |
Correct |
38 ms |
10796 KB |
Output is correct |
60 |
Correct |
35 ms |
11064 KB |
Output is correct |
61 |
Correct |
30 ms |
10840 KB |
Output is correct |
62 |
Correct |
32 ms |
11056 KB |
Output is correct |
63 |
Correct |
32 ms |
11044 KB |
Output is correct |
64 |
Correct |
30 ms |
11036 KB |
Output is correct |
65 |
Correct |
34 ms |
11068 KB |
Output is correct |
66 |
Correct |
31 ms |
11056 KB |
Output is correct |
67 |
Correct |
30 ms |
10812 KB |
Output is correct |
68 |
Correct |
30 ms |
11036 KB |
Output is correct |
69 |
Correct |
1 ms |
308 KB |
Output is correct |
70 |
Correct |
0 ms |
308 KB |
Output is correct |
71 |
Correct |
30 ms |
11048 KB |
Output is correct |
72 |
Correct |
32 ms |
11048 KB |
Output is correct |
73 |
Correct |
32 ms |
11040 KB |
Output is correct |
74 |
Correct |
0 ms |
340 KB |
Output is correct |
75 |
Correct |
0 ms |
340 KB |
Output is correct |
76 |
Correct |
0 ms |
340 KB |
Output is correct |
77 |
Correct |
0 ms |
340 KB |
Output is correct |
78 |
Correct |
57 ms |
16424 KB |
Output is correct |
79 |
Correct |
49 ms |
11688 KB |
Output is correct |
80 |
Correct |
55 ms |
16448 KB |
Output is correct |
81 |
Correct |
37 ms |
11144 KB |
Output is correct |
82 |
Correct |
59 ms |
16424 KB |
Output is correct |
83 |
Correct |
54 ms |
13444 KB |
Output is correct |
84 |
Correct |
1 ms |
340 KB |
Output is correct |
85 |
Correct |
1 ms |
340 KB |
Output is correct |
86 |
Correct |
1 ms |
308 KB |
Output is correct |
87 |
Correct |
1 ms |
316 KB |
Output is correct |
88 |
Correct |
1 ms |
468 KB |
Output is correct |
89 |
Correct |
1 ms |
444 KB |
Output is correct |
90 |
Correct |
1 ms |
444 KB |
Output is correct |
91 |
Correct |
2 ms |
468 KB |
Output is correct |
92 |
Correct |
1 ms |
444 KB |
Output is correct |
93 |
Correct |
1 ms |
340 KB |
Output is correct |
94 |
Correct |
2 ms |
340 KB |
Output is correct |
95 |
Correct |
1 ms |
340 KB |
Output is correct |
96 |
Correct |
1 ms |
444 KB |
Output is correct |
97 |
Correct |
1 ms |
448 KB |
Output is correct |
98 |
Correct |
1 ms |
340 KB |
Output is correct |
99 |
Correct |
1 ms |
468 KB |
Output is correct |
100 |
Correct |
1 ms |
468 KB |
Output is correct |
101 |
Correct |
6 ms |
1876 KB |
Output is correct |
102 |
Correct |
5 ms |
1492 KB |
Output is correct |
103 |
Correct |
74 ms |
16676 KB |
Output is correct |
104 |
Correct |
93 ms |
16472 KB |
Output is correct |
105 |
Correct |
86 ms |
13864 KB |
Output is correct |
106 |
Correct |
60 ms |
16540 KB |
Output is correct |
107 |
Correct |
47 ms |
11824 KB |
Output is correct |
108 |
Correct |
72 ms |
12228 KB |
Output is correct |
109 |
Correct |
37 ms |
11456 KB |
Output is correct |
110 |
Correct |
33 ms |
11080 KB |
Output is correct |
111 |
Correct |
63 ms |
15744 KB |
Output is correct |
112 |
Correct |
68 ms |
15076 KB |
Output is correct |
113 |
Correct |
62 ms |
11932 KB |
Output is correct |
114 |
Correct |
62 ms |
16528 KB |
Output is correct |
115 |
Correct |
75 ms |
16536 KB |
Output is correct |