#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define vint vector<int>
#define vll vector<long long>
#define fo(a, b, c) for (int a = b; a < (int)c; a++)
#define rfo(a, b, c) for (int a = b - 1; a >= (int)c; a--)
#define print(x) cout << x << "\n"
ll s2(vint s)
{
ll count = 0;
ll on, l, r;
while (s.size() > 0)
{
on = s[s.size() - 1];
l = s.size() - 1, r = s.size() - 1;
rfo(i, s.size() - 1, 0)
{
if (-s[i] == on)
{
if (s[i] > 0) // right
{
r = i;
}
else
{
l = i;
}
break;
}
}
if (r < l)
{ // right must be moved
count += (ll)s.size() - 1 - r;
s.erase(s.begin() + l);
s.erase(s.begin() + r);
}
else
{
count += (ll)s.size() - 2 - l;
s.erase(s.begin() + r);
s.erase(s.begin() + l);
}
}
return count;
}
ll s3(vint s)
{
int leftOn = 0;
int rightOn = 1;
ll sum = 0;
fo(i, 0, s.size())
{
if (s[i] > 0) //right
{
sum += abs(i - rightOn);
rightOn += 2;
}
else
{
sum += abs(i - leftOn);
leftOn += 2;
}
}
return sum / 2;
}
ll s4(vint s)
{
ll n = (ll)s.size() / 2;
return (n * n - n) / 2;
}
// s - the array of shoes, with -1 being left and 1 being right
ll count_swaps(vint s)
{
if (s.size() == 2)
return s[0] > 0 ? 1 : 0;
int val = abs(s[0]);
bool allSame = true;
int n = s.size() / 2;
bool halfed = true;
fo(i, 0, n)
{
if (s[i] > 0 || s[i + n] < 0 || (s[i] + s[i + n] != 0))
{
halfed = false;
}
if (abs(s[i]) != val || abs(s[i + n]) != val)
{
allSame = false;
}
// if(!allSame && !halfed) break;
}
if (allSame)
{
// print("s3");
return s3(s);
}
if (halfed)
{
// print("s4");
return s4(s);
}
// print("other");
return s2(s);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
0 ms |
204 KB |
Output is correct |
22 |
Correct |
0 ms |
204 KB |
Output is correct |
23 |
Correct |
0 ms |
204 KB |
Output is correct |
24 |
Correct |
0 ms |
204 KB |
Output is correct |
25 |
Correct |
0 ms |
204 KB |
Output is correct |
26 |
Correct |
1 ms |
204 KB |
Output is correct |
27 |
Correct |
0 ms |
204 KB |
Output is correct |
28 |
Correct |
0 ms |
204 KB |
Output is correct |
29 |
Correct |
0 ms |
204 KB |
Output is correct |
30 |
Correct |
1 ms |
204 KB |
Output is correct |
31 |
Correct |
1 ms |
204 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
204 KB |
Output is correct |
34 |
Correct |
0 ms |
204 KB |
Output is correct |
35 |
Correct |
0 ms |
204 KB |
Output is correct |
36 |
Correct |
0 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
0 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
328 KB |
Output is correct |
16 |
Correct |
1 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
1 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
3 ms |
516 KB |
Output is correct |
21 |
Correct |
3 ms |
460 KB |
Output is correct |
22 |
Correct |
29 ms |
2620 KB |
Output is correct |
23 |
Correct |
27 ms |
2624 KB |
Output is correct |
24 |
Correct |
27 ms |
2636 KB |
Output is correct |
25 |
Correct |
23 ms |
2616 KB |
Output is correct |
26 |
Correct |
29 ms |
2612 KB |
Output is correct |
27 |
Correct |
25 ms |
2612 KB |
Output is correct |
28 |
Correct |
23 ms |
2616 KB |
Output is correct |
29 |
Correct |
23 ms |
2620 KB |
Output is correct |
30 |
Correct |
31 ms |
2608 KB |
Output is correct |
31 |
Correct |
27 ms |
2624 KB |
Output is correct |
32 |
Correct |
23 ms |
2628 KB |
Output is correct |
33 |
Correct |
22 ms |
2612 KB |
Output is correct |
34 |
Correct |
27 ms |
2628 KB |
Output is correct |
35 |
Correct |
0 ms |
204 KB |
Output is correct |
36 |
Correct |
1 ms |
204 KB |
Output is correct |
37 |
Correct |
33 ms |
2640 KB |
Output is correct |
38 |
Correct |
23 ms |
2616 KB |
Output is correct |
39 |
Correct |
23 ms |
2612 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
27 ms |
2612 KB |
Output is correct |
6 |
Correct |
30 ms |
2612 KB |
Output is correct |
7 |
Correct |
23 ms |
2636 KB |
Output is correct |
8 |
Correct |
23 ms |
2628 KB |
Output is correct |
9 |
Correct |
23 ms |
2624 KB |
Output is correct |
10 |
Correct |
23 ms |
2636 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
0 ms |
204 KB |
Output is correct |
22 |
Correct |
0 ms |
204 KB |
Output is correct |
23 |
Correct |
0 ms |
204 KB |
Output is correct |
24 |
Correct |
0 ms |
204 KB |
Output is correct |
25 |
Correct |
0 ms |
204 KB |
Output is correct |
26 |
Correct |
1 ms |
204 KB |
Output is correct |
27 |
Correct |
0 ms |
204 KB |
Output is correct |
28 |
Correct |
0 ms |
204 KB |
Output is correct |
29 |
Correct |
0 ms |
204 KB |
Output is correct |
30 |
Correct |
1 ms |
204 KB |
Output is correct |
31 |
Correct |
1 ms |
204 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
204 KB |
Output is correct |
34 |
Correct |
0 ms |
204 KB |
Output is correct |
35 |
Correct |
0 ms |
204 KB |
Output is correct |
36 |
Correct |
0 ms |
204 KB |
Output is correct |
37 |
Correct |
0 ms |
204 KB |
Output is correct |
38 |
Correct |
1 ms |
204 KB |
Output is correct |
39 |
Correct |
1 ms |
204 KB |
Output is correct |
40 |
Correct |
1 ms |
204 KB |
Output is correct |
41 |
Correct |
1 ms |
204 KB |
Output is correct |
42 |
Correct |
1 ms |
204 KB |
Output is correct |
43 |
Correct |
1 ms |
204 KB |
Output is correct |
44 |
Correct |
2 ms |
204 KB |
Output is correct |
45 |
Correct |
1 ms |
204 KB |
Output is correct |
46 |
Correct |
1 ms |
204 KB |
Output is correct |
47 |
Correct |
2 ms |
204 KB |
Output is correct |
48 |
Correct |
2 ms |
204 KB |
Output is correct |
49 |
Correct |
2 ms |
204 KB |
Output is correct |
50 |
Correct |
1 ms |
204 KB |
Output is correct |
51 |
Correct |
1 ms |
204 KB |
Output is correct |
52 |
Correct |
2 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
0 ms |
204 KB |
Output is correct |
22 |
Correct |
0 ms |
204 KB |
Output is correct |
23 |
Correct |
0 ms |
204 KB |
Output is correct |
24 |
Correct |
0 ms |
204 KB |
Output is correct |
25 |
Correct |
0 ms |
204 KB |
Output is correct |
26 |
Correct |
1 ms |
204 KB |
Output is correct |
27 |
Correct |
0 ms |
204 KB |
Output is correct |
28 |
Correct |
0 ms |
204 KB |
Output is correct |
29 |
Correct |
0 ms |
204 KB |
Output is correct |
30 |
Correct |
1 ms |
204 KB |
Output is correct |
31 |
Correct |
1 ms |
204 KB |
Output is correct |
32 |
Correct |
1 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
204 KB |
Output is correct |
34 |
Correct |
0 ms |
204 KB |
Output is correct |
35 |
Correct |
0 ms |
204 KB |
Output is correct |
36 |
Correct |
0 ms |
204 KB |
Output is correct |
37 |
Correct |
0 ms |
204 KB |
Output is correct |
38 |
Correct |
1 ms |
204 KB |
Output is correct |
39 |
Correct |
0 ms |
204 KB |
Output is correct |
40 |
Correct |
0 ms |
204 KB |
Output is correct |
41 |
Correct |
1 ms |
204 KB |
Output is correct |
42 |
Correct |
1 ms |
204 KB |
Output is correct |
43 |
Correct |
0 ms |
204 KB |
Output is correct |
44 |
Correct |
1 ms |
204 KB |
Output is correct |
45 |
Correct |
1 ms |
204 KB |
Output is correct |
46 |
Correct |
1 ms |
204 KB |
Output is correct |
47 |
Correct |
0 ms |
204 KB |
Output is correct |
48 |
Correct |
0 ms |
204 KB |
Output is correct |
49 |
Correct |
1 ms |
328 KB |
Output is correct |
50 |
Correct |
1 ms |
204 KB |
Output is correct |
51 |
Correct |
0 ms |
204 KB |
Output is correct |
52 |
Correct |
1 ms |
204 KB |
Output is correct |
53 |
Correct |
1 ms |
204 KB |
Output is correct |
54 |
Correct |
3 ms |
516 KB |
Output is correct |
55 |
Correct |
3 ms |
460 KB |
Output is correct |
56 |
Correct |
29 ms |
2620 KB |
Output is correct |
57 |
Correct |
27 ms |
2624 KB |
Output is correct |
58 |
Correct |
27 ms |
2636 KB |
Output is correct |
59 |
Correct |
23 ms |
2616 KB |
Output is correct |
60 |
Correct |
29 ms |
2612 KB |
Output is correct |
61 |
Correct |
25 ms |
2612 KB |
Output is correct |
62 |
Correct |
23 ms |
2616 KB |
Output is correct |
63 |
Correct |
23 ms |
2620 KB |
Output is correct |
64 |
Correct |
31 ms |
2608 KB |
Output is correct |
65 |
Correct |
27 ms |
2624 KB |
Output is correct |
66 |
Correct |
23 ms |
2628 KB |
Output is correct |
67 |
Correct |
22 ms |
2612 KB |
Output is correct |
68 |
Correct |
27 ms |
2628 KB |
Output is correct |
69 |
Correct |
0 ms |
204 KB |
Output is correct |
70 |
Correct |
1 ms |
204 KB |
Output is correct |
71 |
Correct |
33 ms |
2640 KB |
Output is correct |
72 |
Correct |
23 ms |
2616 KB |
Output is correct |
73 |
Correct |
23 ms |
2612 KB |
Output is correct |
74 |
Correct |
1 ms |
204 KB |
Output is correct |
75 |
Correct |
0 ms |
204 KB |
Output is correct |
76 |
Correct |
0 ms |
204 KB |
Output is correct |
77 |
Correct |
1 ms |
204 KB |
Output is correct |
78 |
Correct |
27 ms |
2612 KB |
Output is correct |
79 |
Correct |
30 ms |
2612 KB |
Output is correct |
80 |
Correct |
23 ms |
2636 KB |
Output is correct |
81 |
Correct |
23 ms |
2628 KB |
Output is correct |
82 |
Correct |
23 ms |
2624 KB |
Output is correct |
83 |
Correct |
23 ms |
2636 KB |
Output is correct |
84 |
Correct |
0 ms |
204 KB |
Output is correct |
85 |
Correct |
1 ms |
204 KB |
Output is correct |
86 |
Correct |
1 ms |
204 KB |
Output is correct |
87 |
Correct |
1 ms |
204 KB |
Output is correct |
88 |
Correct |
1 ms |
204 KB |
Output is correct |
89 |
Correct |
1 ms |
204 KB |
Output is correct |
90 |
Correct |
1 ms |
204 KB |
Output is correct |
91 |
Correct |
2 ms |
204 KB |
Output is correct |
92 |
Correct |
1 ms |
204 KB |
Output is correct |
93 |
Correct |
1 ms |
204 KB |
Output is correct |
94 |
Correct |
2 ms |
204 KB |
Output is correct |
95 |
Correct |
2 ms |
204 KB |
Output is correct |
96 |
Correct |
2 ms |
204 KB |
Output is correct |
97 |
Correct |
1 ms |
204 KB |
Output is correct |
98 |
Correct |
1 ms |
204 KB |
Output is correct |
99 |
Correct |
2 ms |
204 KB |
Output is correct |
100 |
Correct |
1 ms |
204 KB |
Output is correct |
101 |
Correct |
52 ms |
460 KB |
Output is correct |
102 |
Correct |
27 ms |
528 KB |
Output is correct |
103 |
Execution timed out |
1082 ms |
2604 KB |
Time limit exceeded |
104 |
Halted |
0 ms |
0 KB |
- |