#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";
}
| # |
Verdict |
Execution time |
Memory |
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 |
| # |
Verdict |
Execution time |
Memory |
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 |
| # |
Verdict |
Execution time |
Memory |
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 |
| # |
Verdict |
Execution time |
Memory |
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 |
- |
