/*input
ABABABAB
*/
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
ll dp[1 << 15];
int main()
{
ios_base::sync_with_stdio(false);
string s;
cin >> s;
for (int i = 0; i < (1 << 15); i++)
dp[i] = 1e18;
dp[0] = 0;
vector<int>p[15];
for (int i = 0; i < (int)s.size(); i++)
p[s[i] - 'A'].push_back(i);
int G = 15;
while (p[G - 1].empty())
G--;
for (int msk = 0; msk < (1 << G); msk++)
{
for (int v = 0; v < G; v++)
{
if ((msk & (1 << v)) == 0)
{
int msk1 = msk ^ (1 << v);
ll L[p[v].size() + 2];
ll R[p[v].size() + 2];
for (ll i = 0; i <= (int)p[v].size(); i++)
{
L[i] = 0;
R[i] = 0;
}
for (int j = 0; j < (int)s.size(); j++)
{
if (((1 << (s[j] - 'A'))&msk) != 0)
{
auto it = lower_bound(p[v].begin(), p[v].end(), j);
L[(it - p[v].begin()) + 1] += 4;
R[(p[v].end() - it) + 1] += 4;
//cout << ";" << (char)('A' + v) << " " << s[j] << " " << j << " " << (it - p[v].begin()) + 1 << " " << (p[v].end() - it) + 1 << endl;
}
}
for (ll i = 1; i <= (int)p[v].size(); i++)
L[i] += L[i - 1];
for (ll i = 1; i <= (int)p[v].size(); i++)
L[i] += L[i - 1];
for (ll i = 1; i <= (int)p[v].size(); i++)
R[i] += R[i - 1];
for (ll i = 1; i <= (int)p[v].size(); i++)
{
R[i] += R[i - 1];
//cout << (char)('A' + v) << " " << i << " " << L[i] / 4 << " " << R[i] / 4 << endl;
}
for (ll i = 1; i <= (int)p[v].size(); i++)
L[i] += i * (i - 1);
for (ll i = 1; i <= (int)p[v].size(); i++)
R[i] += i * (i - 1);
ll best = 1e18;
for (int l = 0; l <= (int)p[v].size(); l++)
{
best = min(best, L[l] + R[(int)p[v].size() - l]);
}
dp[msk1] = min(dp[msk1], dp[msk] + best);
}
}
}
ll ret = dp[(1 << G) - 1];
cout << ret / 4;
if (ret % 4 == 2)
{
cout << ".5";
}
else if (ret % 4 != 0)
{
cout << "." << 25 * (ret % 4);
}
cout << "\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
596 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
0 ms |
468 KB |
Output is correct |
4 |
Correct |
0 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
596 KB |
Output is correct |
6 |
Correct |
3 ms |
2448 KB |
Output is correct |
7 |
Correct |
3 ms |
2704 KB |
Output is correct |
8 |
Correct |
4 ms |
2832 KB |
Output is correct |
9 |
Correct |
4 ms |
2832 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
468 KB |
Output is correct |
2 |
Correct |
0 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
580 KB |
Output is correct |
6 |
Correct |
1 ms |
452 KB |
Output is correct |
7 |
Correct |
1 ms |
460 KB |
Output is correct |
8 |
Correct |
1 ms |
468 KB |
Output is correct |
9 |
Correct |
1 ms |
468 KB |
Output is correct |
10 |
Correct |
0 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
1 ms |
452 KB |
Output is correct |
14 |
Correct |
1 ms |
468 KB |
Output is correct |
15 |
Correct |
1 ms |
468 KB |
Output is correct |
16 |
Correct |
1 ms |
468 KB |
Output is correct |
17 |
Correct |
1 ms |
468 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
468 KB |
Output is correct |
2 |
Correct |
0 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
580 KB |
Output is correct |
6 |
Correct |
1 ms |
452 KB |
Output is correct |
7 |
Correct |
1 ms |
460 KB |
Output is correct |
8 |
Correct |
1 ms |
468 KB |
Output is correct |
9 |
Correct |
1 ms |
468 KB |
Output is correct |
10 |
Correct |
0 ms |
468 KB |
Output is correct |
11 |
Correct |
1 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
1 ms |
452 KB |
Output is correct |
14 |
Correct |
1 ms |
468 KB |
Output is correct |
15 |
Correct |
1 ms |
468 KB |
Output is correct |
16 |
Correct |
1 ms |
468 KB |
Output is correct |
17 |
Correct |
1 ms |
468 KB |
Output is correct |
18 |
Correct |
1 ms |
468 KB |
Output is correct |
19 |
Correct |
0 ms |
468 KB |
Output is correct |
20 |
Correct |
1 ms |
468 KB |
Output is correct |
21 |
Correct |
1 ms |
468 KB |
Output is correct |
22 |
Correct |
1 ms |
468 KB |
Output is correct |
23 |
Correct |
0 ms |
460 KB |
Output is correct |
24 |
Correct |
1 ms |
468 KB |
Output is correct |
25 |
Correct |
1 ms |
448 KB |
Output is correct |
26 |
Correct |
1 ms |
468 KB |
Output is correct |
27 |
Correct |
1 ms |
468 KB |
Output is correct |
28 |
Correct |
1 ms |
468 KB |
Output is correct |
29 |
Correct |
1 ms |
468 KB |
Output is correct |
30 |
Correct |
1 ms |
468 KB |
Output is correct |
31 |
Correct |
1 ms |
576 KB |
Output is correct |
32 |
Correct |
1 ms |
468 KB |
Output is correct |
33 |
Correct |
1 ms |
468 KB |
Output is correct |
34 |
Correct |
1 ms |
468 KB |
Output is correct |
35 |
Correct |
31 ms |
964 KB |
Output is correct |
36 |
Correct |
31 ms |
852 KB |
Output is correct |
37 |
Correct |
812 ms |
672 KB |
Output is correct |
38 |
Correct |
334 ms |
716 KB |
Output is correct |
39 |
Correct |
198 ms |
852 KB |
Output is correct |
40 |
Correct |
470 ms |
648 KB |
Output is correct |
41 |
Correct |
798 ms |
596 KB |
Output is correct |
42 |
Correct |
785 ms |
692 KB |
Output is correct |
43 |
Correct |
820 ms |
696 KB |
Output is correct |
44 |
Correct |
792 ms |
676 KB |
Output is correct |
45 |
Correct |
787 ms |
704 KB |
Output is correct |
46 |
Correct |
796 ms |
696 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
596 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
0 ms |
468 KB |
Output is correct |
4 |
Correct |
0 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
596 KB |
Output is correct |
6 |
Correct |
3 ms |
2448 KB |
Output is correct |
7 |
Correct |
3 ms |
2704 KB |
Output is correct |
8 |
Correct |
4 ms |
2832 KB |
Output is correct |
9 |
Correct |
4 ms |
2832 KB |
Output is correct |
10 |
Correct |
0 ms |
468 KB |
Output is correct |
11 |
Correct |
0 ms |
468 KB |
Output is correct |
12 |
Correct |
1 ms |
468 KB |
Output is correct |
13 |
Correct |
1 ms |
468 KB |
Output is correct |
14 |
Correct |
1 ms |
580 KB |
Output is correct |
15 |
Correct |
1 ms |
452 KB |
Output is correct |
16 |
Correct |
1 ms |
460 KB |
Output is correct |
17 |
Correct |
1 ms |
468 KB |
Output is correct |
18 |
Correct |
1 ms |
468 KB |
Output is correct |
19 |
Correct |
0 ms |
468 KB |
Output is correct |
20 |
Correct |
1 ms |
468 KB |
Output is correct |
21 |
Correct |
1 ms |
468 KB |
Output is correct |
22 |
Correct |
1 ms |
452 KB |
Output is correct |
23 |
Correct |
1 ms |
468 KB |
Output is correct |
24 |
Correct |
1 ms |
468 KB |
Output is correct |
25 |
Correct |
1 ms |
468 KB |
Output is correct |
26 |
Correct |
1 ms |
468 KB |
Output is correct |
27 |
Correct |
1 ms |
468 KB |
Output is correct |
28 |
Correct |
0 ms |
468 KB |
Output is correct |
29 |
Correct |
1 ms |
468 KB |
Output is correct |
30 |
Correct |
1 ms |
468 KB |
Output is correct |
31 |
Correct |
1 ms |
468 KB |
Output is correct |
32 |
Correct |
0 ms |
460 KB |
Output is correct |
33 |
Correct |
1 ms |
468 KB |
Output is correct |
34 |
Correct |
1 ms |
448 KB |
Output is correct |
35 |
Correct |
1 ms |
468 KB |
Output is correct |
36 |
Correct |
1 ms |
468 KB |
Output is correct |
37 |
Correct |
1 ms |
468 KB |
Output is correct |
38 |
Correct |
1 ms |
468 KB |
Output is correct |
39 |
Correct |
1 ms |
468 KB |
Output is correct |
40 |
Correct |
1 ms |
576 KB |
Output is correct |
41 |
Correct |
1 ms |
468 KB |
Output is correct |
42 |
Correct |
1 ms |
468 KB |
Output is correct |
43 |
Correct |
1 ms |
468 KB |
Output is correct |
44 |
Correct |
31 ms |
964 KB |
Output is correct |
45 |
Correct |
31 ms |
852 KB |
Output is correct |
46 |
Correct |
812 ms |
672 KB |
Output is correct |
47 |
Correct |
334 ms |
716 KB |
Output is correct |
48 |
Correct |
198 ms |
852 KB |
Output is correct |
49 |
Correct |
470 ms |
648 KB |
Output is correct |
50 |
Correct |
798 ms |
596 KB |
Output is correct |
51 |
Correct |
785 ms |
692 KB |
Output is correct |
52 |
Correct |
820 ms |
696 KB |
Output is correct |
53 |
Correct |
792 ms |
676 KB |
Output is correct |
54 |
Correct |
787 ms |
704 KB |
Output is correct |
55 |
Correct |
796 ms |
696 KB |
Output is correct |
56 |
Correct |
13 ms |
468 KB |
Output is correct |
57 |
Correct |
37 ms |
468 KB |
Output is correct |
58 |
Correct |
1 ms |
596 KB |
Output is correct |
59 |
Correct |
1 ms |
456 KB |
Output is correct |
60 |
Correct |
1 ms |
456 KB |
Output is correct |
61 |
Correct |
1 ms |
468 KB |
Output is correct |
62 |
Correct |
1 ms |
584 KB |
Output is correct |
63 |
Correct |
3 ms |
2512 KB |
Output is correct |
64 |
Correct |
4 ms |
2832 KB |
Output is correct |
65 |
Correct |
3 ms |
2960 KB |
Output is correct |
66 |
Correct |
4 ms |
2920 KB |
Output is correct |
67 |
Correct |
0 ms |
468 KB |
Output is correct |
68 |
Correct |
1 ms |
460 KB |
Output is correct |
69 |
Correct |
1 ms |
468 KB |
Output is correct |
70 |
Correct |
1 ms |
468 KB |
Output is correct |
71 |
Correct |
1 ms |
468 KB |
Output is correct |
72 |
Correct |
1 ms |
468 KB |
Output is correct |
73 |
Correct |
1 ms |
468 KB |
Output is correct |
74 |
Correct |
1 ms |
468 KB |
Output is correct |
75 |
Correct |
1 ms |
468 KB |
Output is correct |
76 |
Correct |
1 ms |
468 KB |
Output is correct |
77 |
Correct |
1 ms |
456 KB |
Output is correct |
78 |
Correct |
1 ms |
460 KB |
Output is correct |
79 |
Correct |
1 ms |
468 KB |
Output is correct |
80 |
Correct |
1 ms |
468 KB |
Output is correct |
81 |
Correct |
1 ms |
456 KB |
Output is correct |
82 |
Correct |
1 ms |
468 KB |
Output is correct |
83 |
Correct |
1 ms |
468 KB |
Output is correct |
84 |
Correct |
31 ms |
852 KB |
Output is correct |
85 |
Correct |
31 ms |
852 KB |
Output is correct |
86 |
Correct |
808 ms |
680 KB |
Output is correct |
87 |
Correct |
333 ms |
596 KB |
Output is correct |
88 |
Correct |
202 ms |
852 KB |
Output is correct |
89 |
Correct |
460 ms |
652 KB |
Output is correct |
90 |
Correct |
790 ms |
716 KB |
Output is correct |
91 |
Correct |
791 ms |
684 KB |
Output is correct |
92 |
Correct |
810 ms |
720 KB |
Output is correct |
93 |
Correct |
785 ms |
668 KB |
Output is correct |
94 |
Correct |
785 ms |
696 KB |
Output is correct |
95 |
Correct |
791 ms |
680 KB |
Output is correct |
96 |
Execution timed out |
2074 ms |
1364 KB |
Time limit exceeded |
97 |
Halted |
0 ms |
0 KB |
- |