// #include "grader.cpp"
#include "shoes.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define vi vector<int>
#define size(x) (int)((x).size())
#define int long long
using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
const int p2 = 1<<18;
struct Segtree {
Segtree() {
t = new int [p2*2];
for (int i = 0; i < p2*2; i++) t[i] = 0;
}
void upd(int x, int v) {
for (x += p2; x; x /= 2) {
t[x] += v;
}
}
int get(int b, int e) {
int r = 0;
b += p2;
e += p2;
while (b <= e) {
if (b%2 == 1) {
r += t[b];
b++;
}
if (e%2 == 0) {
r += t[e];
e--;
}
b /= 2;
e /= 2;
}
return r;
}
int* t;
};
int count_swaps(vector<signed> bcc) {
vi b;
for (int i : bcc) b.push_back(i);
int n = size(b);
map<int, map<int, vi>> per;
for (int i = n-1; i >= 0; i--) {
int sign = 0;
if (b[i] < 0) {
sign = 1;
}
per[abs(b[i])][sign].push_back(i);
}
bool handled [n];
for (int i = 0; i < n; i++) handled[i] = false;
Segtree st = Segtree();
int cost = 0;
int before = 0;
for (int i = 0; i < n; i++) if (!handled[i]) {
int sign = 0;
if (b[i] < 0) {
sign = 1;
}
assert(size(per[abs(b[i])][sign]) == size(per[abs(b[i])][!sign]));
assert(!per[abs(b[i])][sign].empty() && per[abs(b[i])][sign].back() == i);
per[abs(b[i])][sign].pop_back();
int j = per[abs(b[i])][!sign].back();
per[abs(b[i])][!sign].pop_back();
if (b[i] > 0) {
cost++;
}
if (i+1 <= j-1) {
int loc = st.get(i+1, j-1);
cost += (j-1)-(i+1)+1 - loc;
}
st.upd(i, 1); // not needed
st.upd(j, 1);
handled[i] = true;
handled[j] = true;
}
return cost;
}
Compilation message
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:67:6: warning: unused variable 'before' [-Wunused-variable]
67 | int before = 0;
| ^~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4308 KB |
Output is correct |
2 |
Correct |
2 ms |
4308 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4308 KB |
Output is correct |
2 |
Correct |
2 ms |
4308 KB |
Output is correct |
3 |
Correct |
2 ms |
4308 KB |
Output is correct |
4 |
Correct |
3 ms |
4436 KB |
Output is correct |
5 |
Correct |
2 ms |
4308 KB |
Output is correct |
6 |
Correct |
2 ms |
4308 KB |
Output is correct |
7 |
Correct |
3 ms |
4308 KB |
Output is correct |
8 |
Correct |
3 ms |
4308 KB |
Output is correct |
9 |
Correct |
2 ms |
4308 KB |
Output is correct |
10 |
Correct |
2 ms |
4308 KB |
Output is correct |
11 |
Correct |
2 ms |
4308 KB |
Output is correct |
12 |
Correct |
2 ms |
4308 KB |
Output is correct |
13 |
Correct |
2 ms |
4308 KB |
Output is correct |
14 |
Correct |
3 ms |
4308 KB |
Output is correct |
15 |
Correct |
2 ms |
4308 KB |
Output is correct |
16 |
Correct |
2 ms |
4308 KB |
Output is correct |
17 |
Correct |
2 ms |
4308 KB |
Output is correct |
18 |
Correct |
2 ms |
4308 KB |
Output is correct |
19 |
Correct |
2 ms |
4308 KB |
Output is correct |
20 |
Correct |
2 ms |
4308 KB |
Output is correct |
21 |
Correct |
2 ms |
4308 KB |
Output is correct |
22 |
Correct |
2 ms |
4308 KB |
Output is correct |
23 |
Correct |
2 ms |
4308 KB |
Output is correct |
24 |
Correct |
2 ms |
4308 KB |
Output is correct |
25 |
Correct |
2 ms |
4308 KB |
Output is correct |
26 |
Correct |
2 ms |
4308 KB |
Output is correct |
27 |
Correct |
2 ms |
4308 KB |
Output is correct |
28 |
Correct |
2 ms |
4308 KB |
Output is correct |
29 |
Correct |
2 ms |
4308 KB |
Output is correct |
30 |
Correct |
2 ms |
4308 KB |
Output is correct |
31 |
Correct |
2 ms |
4308 KB |
Output is correct |
32 |
Correct |
2 ms |
4308 KB |
Output is correct |
33 |
Correct |
3 ms |
4308 KB |
Output is correct |
34 |
Correct |
2 ms |
4308 KB |
Output is correct |
35 |
Correct |
2 ms |
4308 KB |
Output is correct |
36 |
Correct |
2 ms |
4308 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4308 KB |
Output is correct |
2 |
Correct |
2 ms |
4308 KB |
Output is correct |
3 |
Correct |
2 ms |
4308 KB |
Output is correct |
4 |
Correct |
2 ms |
4308 KB |
Output is correct |
5 |
Correct |
2 ms |
4308 KB |
Output is correct |
6 |
Correct |
2 ms |
4308 KB |
Output is correct |
7 |
Correct |
2 ms |
4308 KB |
Output is correct |
8 |
Correct |
3 ms |
4308 KB |
Output is correct |
9 |
Correct |
2 ms |
4308 KB |
Output is correct |
10 |
Correct |
2 ms |
4308 KB |
Output is correct |
11 |
Correct |
2 ms |
4308 KB |
Output is correct |
12 |
Correct |
2 ms |
4308 KB |
Output is correct |
13 |
Correct |
2 ms |
4308 KB |
Output is correct |
14 |
Correct |
2 ms |
4308 KB |
Output is correct |
15 |
Correct |
2 ms |
4308 KB |
Output is correct |
16 |
Correct |
2 ms |
4436 KB |
Output is correct |
17 |
Correct |
2 ms |
4436 KB |
Output is correct |
18 |
Correct |
3 ms |
4436 KB |
Output is correct |
19 |
Correct |
2 ms |
4436 KB |
Output is correct |
20 |
Correct |
6 ms |
5072 KB |
Output is correct |
21 |
Correct |
8 ms |
4944 KB |
Output is correct |
22 |
Correct |
40 ms |
10804 KB |
Output is correct |
23 |
Correct |
34 ms |
11836 KB |
Output is correct |
24 |
Correct |
39 ms |
12604 KB |
Output is correct |
25 |
Correct |
34 ms |
11332 KB |
Output is correct |
26 |
Correct |
42 ms |
11424 KB |
Output is correct |
27 |
Correct |
32 ms |
11676 KB |
Output is correct |
28 |
Correct |
37 ms |
11604 KB |
Output is correct |
29 |
Correct |
42 ms |
11572 KB |
Output is correct |
30 |
Correct |
35 ms |
11548 KB |
Output is correct |
31 |
Correct |
40 ms |
11416 KB |
Output is correct |
32 |
Correct |
36 ms |
11580 KB |
Output is correct |
33 |
Correct |
36 ms |
11324 KB |
Output is correct |
34 |
Correct |
38 ms |
11556 KB |
Output is correct |
35 |
Correct |
2 ms |
4308 KB |
Output is correct |
36 |
Correct |
2 ms |
4308 KB |
Output is correct |
37 |
Correct |
36 ms |
11560 KB |
Output is correct |
38 |
Correct |
40 ms |
11548 KB |
Output is correct |
39 |
Correct |
38 ms |
11556 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4308 KB |
Output is correct |
2 |
Correct |
2 ms |
4308 KB |
Output is correct |
3 |
Correct |
2 ms |
4308 KB |
Output is correct |
4 |
Correct |
2 ms |
4308 KB |
Output is correct |
5 |
Correct |
327 ms |
39040 KB |
Output is correct |
6 |
Correct |
149 ms |
13740 KB |
Output is correct |
7 |
Correct |
342 ms |
40340 KB |
Output is correct |
8 |
Correct |
50 ms |
11412 KB |
Output is correct |
9 |
Correct |
328 ms |
40208 KB |
Output is correct |
10 |
Correct |
266 ms |
25232 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4308 KB |
Output is correct |
2 |
Correct |
2 ms |
4308 KB |
Output is correct |
3 |
Correct |
2 ms |
4308 KB |
Output is correct |
4 |
Correct |
3 ms |
4436 KB |
Output is correct |
5 |
Correct |
2 ms |
4308 KB |
Output is correct |
6 |
Correct |
2 ms |
4308 KB |
Output is correct |
7 |
Correct |
3 ms |
4308 KB |
Output is correct |
8 |
Correct |
3 ms |
4308 KB |
Output is correct |
9 |
Correct |
2 ms |
4308 KB |
Output is correct |
10 |
Correct |
2 ms |
4308 KB |
Output is correct |
11 |
Correct |
2 ms |
4308 KB |
Output is correct |
12 |
Correct |
2 ms |
4308 KB |
Output is correct |
13 |
Correct |
2 ms |
4308 KB |
Output is correct |
14 |
Correct |
3 ms |
4308 KB |
Output is correct |
15 |
Correct |
2 ms |
4308 KB |
Output is correct |
16 |
Correct |
2 ms |
4308 KB |
Output is correct |
17 |
Correct |
2 ms |
4308 KB |
Output is correct |
18 |
Correct |
2 ms |
4308 KB |
Output is correct |
19 |
Correct |
2 ms |
4308 KB |
Output is correct |
20 |
Correct |
2 ms |
4308 KB |
Output is correct |
21 |
Correct |
2 ms |
4308 KB |
Output is correct |
22 |
Correct |
2 ms |
4308 KB |
Output is correct |
23 |
Correct |
2 ms |
4308 KB |
Output is correct |
24 |
Correct |
2 ms |
4308 KB |
Output is correct |
25 |
Correct |
2 ms |
4308 KB |
Output is correct |
26 |
Correct |
2 ms |
4308 KB |
Output is correct |
27 |
Correct |
2 ms |
4308 KB |
Output is correct |
28 |
Correct |
2 ms |
4308 KB |
Output is correct |
29 |
Correct |
2 ms |
4308 KB |
Output is correct |
30 |
Correct |
2 ms |
4308 KB |
Output is correct |
31 |
Correct |
2 ms |
4308 KB |
Output is correct |
32 |
Correct |
2 ms |
4308 KB |
Output is correct |
33 |
Correct |
3 ms |
4308 KB |
Output is correct |
34 |
Correct |
2 ms |
4308 KB |
Output is correct |
35 |
Correct |
2 ms |
4308 KB |
Output is correct |
36 |
Correct |
2 ms |
4308 KB |
Output is correct |
37 |
Correct |
2 ms |
4308 KB |
Output is correct |
38 |
Correct |
2 ms |
4308 KB |
Output is correct |
39 |
Correct |
2 ms |
4436 KB |
Output is correct |
40 |
Correct |
2 ms |
4436 KB |
Output is correct |
41 |
Correct |
3 ms |
4692 KB |
Output is correct |
42 |
Correct |
3 ms |
4692 KB |
Output is correct |
43 |
Correct |
4 ms |
4692 KB |
Output is correct |
44 |
Correct |
3 ms |
4564 KB |
Output is correct |
45 |
Correct |
4 ms |
4564 KB |
Output is correct |
46 |
Correct |
3 ms |
4564 KB |
Output is correct |
47 |
Correct |
3 ms |
4564 KB |
Output is correct |
48 |
Correct |
3 ms |
4436 KB |
Output is correct |
49 |
Correct |
3 ms |
4436 KB |
Output is correct |
50 |
Correct |
2 ms |
4436 KB |
Output is correct |
51 |
Correct |
2 ms |
4436 KB |
Output is correct |
52 |
Correct |
3 ms |
4692 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4308 KB |
Output is correct |
2 |
Correct |
2 ms |
4308 KB |
Output is correct |
3 |
Correct |
2 ms |
4308 KB |
Output is correct |
4 |
Correct |
3 ms |
4436 KB |
Output is correct |
5 |
Correct |
2 ms |
4308 KB |
Output is correct |
6 |
Correct |
2 ms |
4308 KB |
Output is correct |
7 |
Correct |
3 ms |
4308 KB |
Output is correct |
8 |
Correct |
3 ms |
4308 KB |
Output is correct |
9 |
Correct |
2 ms |
4308 KB |
Output is correct |
10 |
Correct |
2 ms |
4308 KB |
Output is correct |
11 |
Correct |
2 ms |
4308 KB |
Output is correct |
12 |
Correct |
2 ms |
4308 KB |
Output is correct |
13 |
Correct |
2 ms |
4308 KB |
Output is correct |
14 |
Correct |
3 ms |
4308 KB |
Output is correct |
15 |
Correct |
2 ms |
4308 KB |
Output is correct |
16 |
Correct |
2 ms |
4308 KB |
Output is correct |
17 |
Correct |
2 ms |
4308 KB |
Output is correct |
18 |
Correct |
2 ms |
4308 KB |
Output is correct |
19 |
Correct |
2 ms |
4308 KB |
Output is correct |
20 |
Correct |
2 ms |
4308 KB |
Output is correct |
21 |
Correct |
2 ms |
4308 KB |
Output is correct |
22 |
Correct |
2 ms |
4308 KB |
Output is correct |
23 |
Correct |
2 ms |
4308 KB |
Output is correct |
24 |
Correct |
2 ms |
4308 KB |
Output is correct |
25 |
Correct |
2 ms |
4308 KB |
Output is correct |
26 |
Correct |
2 ms |
4308 KB |
Output is correct |
27 |
Correct |
2 ms |
4308 KB |
Output is correct |
28 |
Correct |
2 ms |
4308 KB |
Output is correct |
29 |
Correct |
2 ms |
4308 KB |
Output is correct |
30 |
Correct |
2 ms |
4308 KB |
Output is correct |
31 |
Correct |
2 ms |
4308 KB |
Output is correct |
32 |
Correct |
2 ms |
4308 KB |
Output is correct |
33 |
Correct |
3 ms |
4308 KB |
Output is correct |
34 |
Correct |
2 ms |
4308 KB |
Output is correct |
35 |
Correct |
2 ms |
4308 KB |
Output is correct |
36 |
Correct |
2 ms |
4308 KB |
Output is correct |
37 |
Correct |
2 ms |
4308 KB |
Output is correct |
38 |
Correct |
2 ms |
4308 KB |
Output is correct |
39 |
Correct |
2 ms |
4308 KB |
Output is correct |
40 |
Correct |
2 ms |
4308 KB |
Output is correct |
41 |
Correct |
2 ms |
4308 KB |
Output is correct |
42 |
Correct |
3 ms |
4308 KB |
Output is correct |
43 |
Correct |
2 ms |
4308 KB |
Output is correct |
44 |
Correct |
2 ms |
4308 KB |
Output is correct |
45 |
Correct |
2 ms |
4308 KB |
Output is correct |
46 |
Correct |
2 ms |
4308 KB |
Output is correct |
47 |
Correct |
2 ms |
4308 KB |
Output is correct |
48 |
Correct |
2 ms |
4308 KB |
Output is correct |
49 |
Correct |
2 ms |
4308 KB |
Output is correct |
50 |
Correct |
2 ms |
4436 KB |
Output is correct |
51 |
Correct |
2 ms |
4436 KB |
Output is correct |
52 |
Correct |
3 ms |
4436 KB |
Output is correct |
53 |
Correct |
2 ms |
4436 KB |
Output is correct |
54 |
Correct |
6 ms |
5072 KB |
Output is correct |
55 |
Correct |
8 ms |
4944 KB |
Output is correct |
56 |
Correct |
40 ms |
10804 KB |
Output is correct |
57 |
Correct |
34 ms |
11836 KB |
Output is correct |
58 |
Correct |
39 ms |
12604 KB |
Output is correct |
59 |
Correct |
34 ms |
11332 KB |
Output is correct |
60 |
Correct |
42 ms |
11424 KB |
Output is correct |
61 |
Correct |
32 ms |
11676 KB |
Output is correct |
62 |
Correct |
37 ms |
11604 KB |
Output is correct |
63 |
Correct |
42 ms |
11572 KB |
Output is correct |
64 |
Correct |
35 ms |
11548 KB |
Output is correct |
65 |
Correct |
40 ms |
11416 KB |
Output is correct |
66 |
Correct |
36 ms |
11580 KB |
Output is correct |
67 |
Correct |
36 ms |
11324 KB |
Output is correct |
68 |
Correct |
38 ms |
11556 KB |
Output is correct |
69 |
Correct |
2 ms |
4308 KB |
Output is correct |
70 |
Correct |
2 ms |
4308 KB |
Output is correct |
71 |
Correct |
36 ms |
11560 KB |
Output is correct |
72 |
Correct |
40 ms |
11548 KB |
Output is correct |
73 |
Correct |
38 ms |
11556 KB |
Output is correct |
74 |
Correct |
2 ms |
4308 KB |
Output is correct |
75 |
Correct |
2 ms |
4308 KB |
Output is correct |
76 |
Correct |
2 ms |
4308 KB |
Output is correct |
77 |
Correct |
2 ms |
4308 KB |
Output is correct |
78 |
Correct |
327 ms |
39040 KB |
Output is correct |
79 |
Correct |
149 ms |
13740 KB |
Output is correct |
80 |
Correct |
342 ms |
40340 KB |
Output is correct |
81 |
Correct |
50 ms |
11412 KB |
Output is correct |
82 |
Correct |
328 ms |
40208 KB |
Output is correct |
83 |
Correct |
266 ms |
25232 KB |
Output is correct |
84 |
Correct |
2 ms |
4308 KB |
Output is correct |
85 |
Correct |
2 ms |
4308 KB |
Output is correct |
86 |
Correct |
2 ms |
4436 KB |
Output is correct |
87 |
Correct |
2 ms |
4436 KB |
Output is correct |
88 |
Correct |
3 ms |
4692 KB |
Output is correct |
89 |
Correct |
3 ms |
4692 KB |
Output is correct |
90 |
Correct |
4 ms |
4692 KB |
Output is correct |
91 |
Correct |
3 ms |
4564 KB |
Output is correct |
92 |
Correct |
4 ms |
4564 KB |
Output is correct |
93 |
Correct |
3 ms |
4564 KB |
Output is correct |
94 |
Correct |
3 ms |
4564 KB |
Output is correct |
95 |
Correct |
3 ms |
4436 KB |
Output is correct |
96 |
Correct |
3 ms |
4436 KB |
Output is correct |
97 |
Correct |
2 ms |
4436 KB |
Output is correct |
98 |
Correct |
2 ms |
4436 KB |
Output is correct |
99 |
Correct |
3 ms |
4692 KB |
Output is correct |
100 |
Correct |
4 ms |
4692 KB |
Output is correct |
101 |
Correct |
20 ms |
7632 KB |
Output is correct |
102 |
Correct |
16 ms |
5600 KB |
Output is correct |
103 |
Correct |
382 ms |
40496 KB |
Output is correct |
104 |
Correct |
278 ms |
40292 KB |
Output is correct |
105 |
Correct |
312 ms |
27196 KB |
Output is correct |
106 |
Correct |
328 ms |
40284 KB |
Output is correct |
107 |
Correct |
132 ms |
14488 KB |
Output is correct |
108 |
Correct |
182 ms |
17548 KB |
Output is correct |
109 |
Correct |
39 ms |
11836 KB |
Output is correct |
110 |
Correct |
34 ms |
11580 KB |
Output is correct |
111 |
Correct |
342 ms |
36828 KB |
Output is correct |
112 |
Correct |
335 ms |
33484 KB |
Output is correct |
113 |
Correct |
154 ms |
14712 KB |
Output is correct |
114 |
Correct |
340 ms |
40252 KB |
Output is correct |
115 |
Correct |
364 ms |
40292 KB |
Output is correct |