#include "bits/stdc++.h"
using namespace std;
#define ar array
typedef int64_t ll;
#define int ll
const int G = 15;
int dp[1 << G];
signed main(){
ios::sync_with_stdio(0); cin.tie(0);
string s; cin>>s;
int n = s.size(), g = 0;
for(int i=0;i<n;i++){
g = max(g, (ll)s[i] - 'A' + 1);
}
memset(dp, 63, sizeof dp);
dp[0] = 0;
int pref[n + 5];
for(int mask=0;mask < (1 << g);mask++){
for(int j=0;j<g;j++){
if(mask >> j & 1) continue;
memset(pref, 0, sizeof pref);
int cnt = 0;
for(int k=0;k<n;k++){
if(k) pref[k] += pref[k-1];
if(s[k] - 'A' == j){
pref[k] += cnt;
cnt++;
}
if(mask >> (s[k] - 'A') & 1) cnt += 2;
}
int suff = 0, res = pref[n - 1]; cnt = 0;
for(int i=n-1;~i;i--){
if(s[i] - 'A' == j){
suff += cnt, cnt++;
}
res = min(res, suff + (i ? pref[i-1] : 0));
if(mask >> (s[i] - 'A') & 1) cnt += 2;
}
dp[mask | (1 << j)] = min(dp[mask | (1 << j)], dp[mask] + res);
}
}
int res = dp[(1 << g) - 1];
cout<<res/2;
if(res&1) cout<<".5";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
468 KB |
Output is correct |
2 |
Correct |
0 ms |
468 KB |
Output is correct |
3 |
Correct |
0 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
2 ms |
1388 KB |
Output is correct |
7 |
Correct |
2 ms |
1492 KB |
Output is correct |
8 |
Correct |
2 ms |
1492 KB |
Output is correct |
9 |
Correct |
2 ms |
1516 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
468 KB |
Output is correct |
2 |
Correct |
1 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 |
468 KB |
Output is correct |
6 |
Correct |
1 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
468 KB |
Output is correct |
8 |
Correct |
1 ms |
468 KB |
Output is correct |
9 |
Correct |
0 ms |
468 KB |
Output is correct |
10 |
Correct |
1 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 |
0 ms |
468 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 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
468 KB |
Output is correct |
2 |
Correct |
1 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 |
468 KB |
Output is correct |
6 |
Correct |
1 ms |
468 KB |
Output is correct |
7 |
Correct |
1 ms |
468 KB |
Output is correct |
8 |
Correct |
1 ms |
468 KB |
Output is correct |
9 |
Correct |
0 ms |
468 KB |
Output is correct |
10 |
Correct |
1 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 |
0 ms |
468 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 |
1 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 |
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 |
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 |
468 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 |
50 ms |
596 KB |
Output is correct |
36 |
Correct |
52 ms |
664 KB |
Output is correct |
37 |
Correct |
282 ms |
668 KB |
Output is correct |
38 |
Correct |
236 ms |
660 KB |
Output is correct |
39 |
Correct |
234 ms |
656 KB |
Output is correct |
40 |
Correct |
246 ms |
652 KB |
Output is correct |
41 |
Correct |
264 ms |
656 KB |
Output is correct |
42 |
Correct |
247 ms |
656 KB |
Output is correct |
43 |
Correct |
254 ms |
656 KB |
Output is correct |
44 |
Correct |
290 ms |
652 KB |
Output is correct |
45 |
Correct |
244 ms |
648 KB |
Output is correct |
46 |
Correct |
250 ms |
656 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
468 KB |
Output is correct |
2 |
Correct |
0 ms |
468 KB |
Output is correct |
3 |
Correct |
0 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
468 KB |
Output is correct |
6 |
Correct |
2 ms |
1388 KB |
Output is correct |
7 |
Correct |
2 ms |
1492 KB |
Output is correct |
8 |
Correct |
2 ms |
1492 KB |
Output is correct |
9 |
Correct |
2 ms |
1516 KB |
Output is correct |
10 |
Correct |
1 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 |
468 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 |
0 ms |
468 KB |
Output is correct |
19 |
Correct |
1 ms |
468 KB |
Output is correct |
20 |
Correct |
0 ms |
468 KB |
Output is correct |
21 |
Correct |
1 ms |
468 KB |
Output is correct |
22 |
Correct |
0 ms |
468 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 |
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 |
468 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 |
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 |
468 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 |
50 ms |
596 KB |
Output is correct |
45 |
Correct |
52 ms |
664 KB |
Output is correct |
46 |
Correct |
282 ms |
668 KB |
Output is correct |
47 |
Correct |
236 ms |
660 KB |
Output is correct |
48 |
Correct |
234 ms |
656 KB |
Output is correct |
49 |
Correct |
246 ms |
652 KB |
Output is correct |
50 |
Correct |
264 ms |
656 KB |
Output is correct |
51 |
Correct |
247 ms |
656 KB |
Output is correct |
52 |
Correct |
254 ms |
656 KB |
Output is correct |
53 |
Correct |
290 ms |
652 KB |
Output is correct |
54 |
Correct |
244 ms |
648 KB |
Output is correct |
55 |
Correct |
250 ms |
656 KB |
Output is correct |
56 |
Correct |
21 ms |
468 KB |
Output is correct |
57 |
Correct |
42 ms |
468 KB |
Output is correct |
58 |
Correct |
1 ms |
468 KB |
Output is correct |
59 |
Correct |
1 ms |
468 KB |
Output is correct |
60 |
Correct |
0 ms |
468 KB |
Output is correct |
61 |
Correct |
1 ms |
468 KB |
Output is correct |
62 |
Correct |
1 ms |
468 KB |
Output is correct |
63 |
Correct |
2 ms |
1364 KB |
Output is correct |
64 |
Correct |
2 ms |
1492 KB |
Output is correct |
65 |
Correct |
2 ms |
1464 KB |
Output is correct |
66 |
Correct |
2 ms |
1492 KB |
Output is correct |
67 |
Correct |
1 ms |
468 KB |
Output is correct |
68 |
Correct |
0 ms |
468 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 |
468 KB |
Output is correct |
78 |
Correct |
1 ms |
468 KB |
Output is correct |
79 |
Correct |
1 ms |
468 KB |
Output is correct |
80 |
Correct |
1 ms |
468 KB |
Output is correct |
81 |
Correct |
0 ms |
468 KB |
Output is correct |
82 |
Correct |
1 ms |
468 KB |
Output is correct |
83 |
Correct |
1 ms |
468 KB |
Output is correct |
84 |
Correct |
46 ms |
596 KB |
Output is correct |
85 |
Correct |
55 ms |
648 KB |
Output is correct |
86 |
Correct |
288 ms |
596 KB |
Output is correct |
87 |
Correct |
221 ms |
652 KB |
Output is correct |
88 |
Correct |
251 ms |
656 KB |
Output is correct |
89 |
Correct |
223 ms |
652 KB |
Output is correct |
90 |
Correct |
247 ms |
652 KB |
Output is correct |
91 |
Correct |
246 ms |
596 KB |
Output is correct |
92 |
Correct |
249 ms |
668 KB |
Output is correct |
93 |
Correct |
251 ms |
648 KB |
Output is correct |
94 |
Correct |
244 ms |
652 KB |
Output is correct |
95 |
Correct |
270 ms |
716 KB |
Output is correct |
96 |
Execution timed out |
2080 ms |
1476 KB |
Time limit exceeded |
97 |
Halted |
0 ms |
0 KB |
- |