#include <bits/stdc++.h>
#define PB push_back
#define ST first
#define ND second
#define _ ios_base::sync_with_stdio(0); cin.tie(0);
//mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
using namespace std;
using ll = long long;
using pi = pair<int,int>;
using vi = vector<int>;
const int nax = 100*1000+10;
int T[(1<<19)],R;
vi lft[nax],rght[nax];
int nxt[2*nax];
void update(int a,int x) {
a+=R;
T[a] += x;
while(a>1) {
a/=2;
T[a] = T[2*a] + T[2*a+1];
}
}
int query(int a,int b) {
a+=R; b+=R;
if(a > b) return 0;
int w = T[a] + (a!=b?T[b]:0);
while(a/2!=b/2) {
if(a%2==0) w+=T[a+1];
if(b%2==1) w+=T[b-1];
a/=2; b/=2;
}
return w;
}
ll count_swaps(vector<int> t) {
int n = t.size();
R = 1;
ll ans = 0;
while(R < n) R*=2;
for(int i = 0; i < n; ++i) {
if(t[i] < 0) {
lft[-t[i]].PB(i);
} else {
rght[t[i]].PB(i);
}
}
for(int i = 1; i <= n/2; ++i) {
for(int j = 0; j < (int)lft[i].size(); ++j) {
ans += (lft[i][j] > rght[i][j]);
nxt[min(lft[i][j],rght[i][j])] = max(lft[i][j],rght[i][j]);
}
}
for(int i = 0; i < n; ++i) {
if(nxt[i] == 0) continue;
ans += nxt[i] - i - 1 - query(i+1,nxt[i]-1);
update(nxt[i],1);
}
return ans;
}
//~ int main() {
//~ cout << count_swaps({2,1,-1,-2});
//~ }
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
9 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
4992 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
9 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
4992 KB |
Output is correct |
3 |
Correct |
7 ms |
4992 KB |
Output is correct |
4 |
Correct |
7 ms |
4992 KB |
Output is correct |
5 |
Correct |
7 ms |
4992 KB |
Output is correct |
6 |
Correct |
7 ms |
4992 KB |
Output is correct |
7 |
Correct |
7 ms |
4992 KB |
Output is correct |
8 |
Correct |
8 ms |
4992 KB |
Output is correct |
9 |
Correct |
8 ms |
4992 KB |
Output is correct |
10 |
Correct |
8 ms |
4992 KB |
Output is correct |
11 |
Correct |
7 ms |
4992 KB |
Output is correct |
12 |
Correct |
7 ms |
4992 KB |
Output is correct |
13 |
Correct |
8 ms |
4992 KB |
Output is correct |
14 |
Correct |
7 ms |
4992 KB |
Output is correct |
15 |
Correct |
7 ms |
4992 KB |
Output is correct |
16 |
Correct |
7 ms |
4992 KB |
Output is correct |
17 |
Correct |
7 ms |
4992 KB |
Output is correct |
18 |
Correct |
11 ms |
4992 KB |
Output is correct |
19 |
Correct |
7 ms |
4992 KB |
Output is correct |
20 |
Correct |
7 ms |
4992 KB |
Output is correct |
21 |
Correct |
7 ms |
4992 KB |
Output is correct |
22 |
Correct |
7 ms |
4992 KB |
Output is correct |
23 |
Correct |
7 ms |
4992 KB |
Output is correct |
24 |
Correct |
7 ms |
4992 KB |
Output is correct |
25 |
Correct |
8 ms |
4992 KB |
Output is correct |
26 |
Correct |
7 ms |
4992 KB |
Output is correct |
27 |
Correct |
8 ms |
4992 KB |
Output is correct |
28 |
Correct |
7 ms |
4992 KB |
Output is correct |
29 |
Correct |
9 ms |
4992 KB |
Output is correct |
30 |
Correct |
7 ms |
4992 KB |
Output is correct |
31 |
Correct |
8 ms |
4992 KB |
Output is correct |
32 |
Correct |
9 ms |
4992 KB |
Output is correct |
33 |
Correct |
7 ms |
4992 KB |
Output is correct |
34 |
Correct |
7 ms |
4992 KB |
Output is correct |
35 |
Correct |
7 ms |
4992 KB |
Output is correct |
36 |
Correct |
7 ms |
4992 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
9 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
4992 KB |
Output is correct |
3 |
Correct |
7 ms |
4992 KB |
Output is correct |
4 |
Correct |
7 ms |
4992 KB |
Output is correct |
5 |
Correct |
8 ms |
4992 KB |
Output is correct |
6 |
Correct |
7 ms |
4992 KB |
Output is correct |
7 |
Correct |
8 ms |
4992 KB |
Output is correct |
8 |
Correct |
7 ms |
4992 KB |
Output is correct |
9 |
Correct |
7 ms |
4992 KB |
Output is correct |
10 |
Correct |
7 ms |
4992 KB |
Output is correct |
11 |
Correct |
7 ms |
4992 KB |
Output is correct |
12 |
Correct |
7 ms |
4992 KB |
Output is correct |
13 |
Correct |
7 ms |
4992 KB |
Output is correct |
14 |
Correct |
8 ms |
4992 KB |
Output is correct |
15 |
Correct |
7 ms |
4992 KB |
Output is correct |
16 |
Correct |
7 ms |
4992 KB |
Output is correct |
17 |
Correct |
8 ms |
4992 KB |
Output is correct |
18 |
Correct |
8 ms |
5120 KB |
Output is correct |
19 |
Correct |
8 ms |
5120 KB |
Output is correct |
20 |
Correct |
13 ms |
5760 KB |
Output is correct |
21 |
Correct |
13 ms |
5632 KB |
Output is correct |
22 |
Correct |
70 ms |
11160 KB |
Output is correct |
23 |
Correct |
55 ms |
11244 KB |
Output is correct |
24 |
Correct |
61 ms |
11244 KB |
Output is correct |
25 |
Correct |
60 ms |
9840 KB |
Output is correct |
26 |
Correct |
65 ms |
11244 KB |
Output is correct |
27 |
Correct |
53 ms |
10988 KB |
Output is correct |
28 |
Correct |
59 ms |
9968 KB |
Output is correct |
29 |
Correct |
62 ms |
9968 KB |
Output is correct |
30 |
Correct |
62 ms |
9968 KB |
Output is correct |
31 |
Correct |
66 ms |
11268 KB |
Output is correct |
32 |
Correct |
61 ms |
9968 KB |
Output is correct |
33 |
Correct |
55 ms |
9840 KB |
Output is correct |
34 |
Correct |
61 ms |
9968 KB |
Output is correct |
35 |
Correct |
7 ms |
4992 KB |
Output is correct |
36 |
Correct |
7 ms |
4992 KB |
Output is correct |
37 |
Correct |
59 ms |
9968 KB |
Output is correct |
38 |
Correct |
62 ms |
9968 KB |
Output is correct |
39 |
Correct |
65 ms |
9968 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
4992 KB |
Output is correct |
3 |
Correct |
7 ms |
5120 KB |
Output is correct |
4 |
Correct |
7 ms |
4992 KB |
Output is correct |
5 |
Correct |
133 ms |
15352 KB |
Output is correct |
6 |
Correct |
75 ms |
10488 KB |
Output is correct |
7 |
Correct |
89 ms |
15352 KB |
Output is correct |
8 |
Correct |
61 ms |
9988 KB |
Output is correct |
9 |
Correct |
133 ms |
15352 KB |
Output is correct |
10 |
Correct |
85 ms |
12280 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
9 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
4992 KB |
Output is correct |
3 |
Correct |
7 ms |
4992 KB |
Output is correct |
4 |
Correct |
7 ms |
4992 KB |
Output is correct |
5 |
Correct |
7 ms |
4992 KB |
Output is correct |
6 |
Correct |
7 ms |
4992 KB |
Output is correct |
7 |
Correct |
7 ms |
4992 KB |
Output is correct |
8 |
Correct |
8 ms |
4992 KB |
Output is correct |
9 |
Correct |
8 ms |
4992 KB |
Output is correct |
10 |
Correct |
8 ms |
4992 KB |
Output is correct |
11 |
Correct |
7 ms |
4992 KB |
Output is correct |
12 |
Correct |
7 ms |
4992 KB |
Output is correct |
13 |
Correct |
8 ms |
4992 KB |
Output is correct |
14 |
Correct |
7 ms |
4992 KB |
Output is correct |
15 |
Correct |
7 ms |
4992 KB |
Output is correct |
16 |
Correct |
7 ms |
4992 KB |
Output is correct |
17 |
Correct |
7 ms |
4992 KB |
Output is correct |
18 |
Correct |
11 ms |
4992 KB |
Output is correct |
19 |
Correct |
7 ms |
4992 KB |
Output is correct |
20 |
Correct |
7 ms |
4992 KB |
Output is correct |
21 |
Correct |
7 ms |
4992 KB |
Output is correct |
22 |
Correct |
7 ms |
4992 KB |
Output is correct |
23 |
Correct |
7 ms |
4992 KB |
Output is correct |
24 |
Correct |
7 ms |
4992 KB |
Output is correct |
25 |
Correct |
8 ms |
4992 KB |
Output is correct |
26 |
Correct |
7 ms |
4992 KB |
Output is correct |
27 |
Correct |
8 ms |
4992 KB |
Output is correct |
28 |
Correct |
7 ms |
4992 KB |
Output is correct |
29 |
Correct |
9 ms |
4992 KB |
Output is correct |
30 |
Correct |
7 ms |
4992 KB |
Output is correct |
31 |
Correct |
8 ms |
4992 KB |
Output is correct |
32 |
Correct |
9 ms |
4992 KB |
Output is correct |
33 |
Correct |
7 ms |
4992 KB |
Output is correct |
34 |
Correct |
7 ms |
4992 KB |
Output is correct |
35 |
Correct |
7 ms |
4992 KB |
Output is correct |
36 |
Correct |
7 ms |
4992 KB |
Output is correct |
37 |
Correct |
8 ms |
4992 KB |
Output is correct |
38 |
Correct |
7 ms |
4992 KB |
Output is correct |
39 |
Correct |
7 ms |
4992 KB |
Output is correct |
40 |
Correct |
7 ms |
4992 KB |
Output is correct |
41 |
Correct |
8 ms |
5120 KB |
Output is correct |
42 |
Correct |
10 ms |
5120 KB |
Output is correct |
43 |
Correct |
10 ms |
5120 KB |
Output is correct |
44 |
Correct |
7 ms |
5120 KB |
Output is correct |
45 |
Correct |
8 ms |
5120 KB |
Output is correct |
46 |
Correct |
8 ms |
5120 KB |
Output is correct |
47 |
Correct |
8 ms |
5120 KB |
Output is correct |
48 |
Correct |
9 ms |
5120 KB |
Output is correct |
49 |
Correct |
8 ms |
5120 KB |
Output is correct |
50 |
Correct |
8 ms |
5120 KB |
Output is correct |
51 |
Correct |
8 ms |
5120 KB |
Output is correct |
52 |
Correct |
8 ms |
5120 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
9 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
4992 KB |
Output is correct |
3 |
Correct |
7 ms |
4992 KB |
Output is correct |
4 |
Correct |
7 ms |
4992 KB |
Output is correct |
5 |
Correct |
7 ms |
4992 KB |
Output is correct |
6 |
Correct |
7 ms |
4992 KB |
Output is correct |
7 |
Correct |
7 ms |
4992 KB |
Output is correct |
8 |
Correct |
8 ms |
4992 KB |
Output is correct |
9 |
Correct |
8 ms |
4992 KB |
Output is correct |
10 |
Correct |
8 ms |
4992 KB |
Output is correct |
11 |
Correct |
7 ms |
4992 KB |
Output is correct |
12 |
Correct |
7 ms |
4992 KB |
Output is correct |
13 |
Correct |
8 ms |
4992 KB |
Output is correct |
14 |
Correct |
7 ms |
4992 KB |
Output is correct |
15 |
Correct |
7 ms |
4992 KB |
Output is correct |
16 |
Correct |
7 ms |
4992 KB |
Output is correct |
17 |
Correct |
7 ms |
4992 KB |
Output is correct |
18 |
Correct |
11 ms |
4992 KB |
Output is correct |
19 |
Correct |
7 ms |
4992 KB |
Output is correct |
20 |
Correct |
7 ms |
4992 KB |
Output is correct |
21 |
Correct |
7 ms |
4992 KB |
Output is correct |
22 |
Correct |
7 ms |
4992 KB |
Output is correct |
23 |
Correct |
7 ms |
4992 KB |
Output is correct |
24 |
Correct |
7 ms |
4992 KB |
Output is correct |
25 |
Correct |
8 ms |
4992 KB |
Output is correct |
26 |
Correct |
7 ms |
4992 KB |
Output is correct |
27 |
Correct |
8 ms |
4992 KB |
Output is correct |
28 |
Correct |
7 ms |
4992 KB |
Output is correct |
29 |
Correct |
9 ms |
4992 KB |
Output is correct |
30 |
Correct |
7 ms |
4992 KB |
Output is correct |
31 |
Correct |
8 ms |
4992 KB |
Output is correct |
32 |
Correct |
9 ms |
4992 KB |
Output is correct |
33 |
Correct |
7 ms |
4992 KB |
Output is correct |
34 |
Correct |
7 ms |
4992 KB |
Output is correct |
35 |
Correct |
7 ms |
4992 KB |
Output is correct |
36 |
Correct |
7 ms |
4992 KB |
Output is correct |
37 |
Correct |
7 ms |
4992 KB |
Output is correct |
38 |
Correct |
7 ms |
4992 KB |
Output is correct |
39 |
Correct |
8 ms |
4992 KB |
Output is correct |
40 |
Correct |
7 ms |
4992 KB |
Output is correct |
41 |
Correct |
8 ms |
4992 KB |
Output is correct |
42 |
Correct |
7 ms |
4992 KB |
Output is correct |
43 |
Correct |
7 ms |
4992 KB |
Output is correct |
44 |
Correct |
7 ms |
4992 KB |
Output is correct |
45 |
Correct |
7 ms |
4992 KB |
Output is correct |
46 |
Correct |
7 ms |
4992 KB |
Output is correct |
47 |
Correct |
7 ms |
4992 KB |
Output is correct |
48 |
Correct |
8 ms |
4992 KB |
Output is correct |
49 |
Correct |
7 ms |
4992 KB |
Output is correct |
50 |
Correct |
7 ms |
4992 KB |
Output is correct |
51 |
Correct |
8 ms |
4992 KB |
Output is correct |
52 |
Correct |
8 ms |
5120 KB |
Output is correct |
53 |
Correct |
8 ms |
5120 KB |
Output is correct |
54 |
Correct |
13 ms |
5760 KB |
Output is correct |
55 |
Correct |
13 ms |
5632 KB |
Output is correct |
56 |
Correct |
70 ms |
11160 KB |
Output is correct |
57 |
Correct |
55 ms |
11244 KB |
Output is correct |
58 |
Correct |
61 ms |
11244 KB |
Output is correct |
59 |
Correct |
60 ms |
9840 KB |
Output is correct |
60 |
Correct |
65 ms |
11244 KB |
Output is correct |
61 |
Correct |
53 ms |
10988 KB |
Output is correct |
62 |
Correct |
59 ms |
9968 KB |
Output is correct |
63 |
Correct |
62 ms |
9968 KB |
Output is correct |
64 |
Correct |
62 ms |
9968 KB |
Output is correct |
65 |
Correct |
66 ms |
11268 KB |
Output is correct |
66 |
Correct |
61 ms |
9968 KB |
Output is correct |
67 |
Correct |
55 ms |
9840 KB |
Output is correct |
68 |
Correct |
61 ms |
9968 KB |
Output is correct |
69 |
Correct |
7 ms |
4992 KB |
Output is correct |
70 |
Correct |
7 ms |
4992 KB |
Output is correct |
71 |
Correct |
59 ms |
9968 KB |
Output is correct |
72 |
Correct |
62 ms |
9968 KB |
Output is correct |
73 |
Correct |
65 ms |
9968 KB |
Output is correct |
74 |
Correct |
7 ms |
4992 KB |
Output is correct |
75 |
Correct |
7 ms |
4992 KB |
Output is correct |
76 |
Correct |
7 ms |
5120 KB |
Output is correct |
77 |
Correct |
7 ms |
4992 KB |
Output is correct |
78 |
Correct |
133 ms |
15352 KB |
Output is correct |
79 |
Correct |
75 ms |
10488 KB |
Output is correct |
80 |
Correct |
89 ms |
15352 KB |
Output is correct |
81 |
Correct |
61 ms |
9988 KB |
Output is correct |
82 |
Correct |
133 ms |
15352 KB |
Output is correct |
83 |
Correct |
85 ms |
12280 KB |
Output is correct |
84 |
Correct |
8 ms |
4992 KB |
Output is correct |
85 |
Correct |
7 ms |
4992 KB |
Output is correct |
86 |
Correct |
7 ms |
4992 KB |
Output is correct |
87 |
Correct |
7 ms |
4992 KB |
Output is correct |
88 |
Correct |
8 ms |
5120 KB |
Output is correct |
89 |
Correct |
10 ms |
5120 KB |
Output is correct |
90 |
Correct |
10 ms |
5120 KB |
Output is correct |
91 |
Correct |
7 ms |
5120 KB |
Output is correct |
92 |
Correct |
8 ms |
5120 KB |
Output is correct |
93 |
Correct |
8 ms |
5120 KB |
Output is correct |
94 |
Correct |
8 ms |
5120 KB |
Output is correct |
95 |
Correct |
9 ms |
5120 KB |
Output is correct |
96 |
Correct |
8 ms |
5120 KB |
Output is correct |
97 |
Correct |
8 ms |
5120 KB |
Output is correct |
98 |
Correct |
8 ms |
5120 KB |
Output is correct |
99 |
Correct |
8 ms |
5120 KB |
Output is correct |
100 |
Correct |
8 ms |
5120 KB |
Output is correct |
101 |
Correct |
15 ms |
6144 KB |
Output is correct |
102 |
Correct |
14 ms |
5760 KB |
Output is correct |
103 |
Correct |
119 ms |
16504 KB |
Output is correct |
104 |
Correct |
97 ms |
16504 KB |
Output is correct |
105 |
Correct |
107 ms |
13816 KB |
Output is correct |
106 |
Correct |
95 ms |
15356 KB |
Output is correct |
107 |
Correct |
75 ms |
11768 KB |
Output is correct |
108 |
Correct |
77 ms |
12152 KB |
Output is correct |
109 |
Correct |
64 ms |
10352 KB |
Output is correct |
110 |
Correct |
64 ms |
9968 KB |
Output is correct |
111 |
Correct |
91 ms |
14584 KB |
Output is correct |
112 |
Correct |
105 ms |
15096 KB |
Output is correct |
113 |
Correct |
89 ms |
10616 KB |
Output is correct |
114 |
Correct |
120 ms |
15352 KB |
Output is correct |
115 |
Correct |
91 ms |
15356 KB |
Output is correct |