// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h>
using namespace std;
#define REP(i, s, e) for (int i = (s); i < (e); i++)
#define RREP(i, s, e) for (int i = (s); i >= (e); i--)
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define SZ(_a) (int) _a.size()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<iii> viii;
#ifndef DEBUG
#define cerr if (0) cerr
#endif
const int INF = 1000000005;
const ll LINF = 1000000000000000005ll;
const int MAXN = 100005;
int n, g;
string s;
ll dp[MAXN];
ll calc(int n) {
return (ll) n * (n - 1) / 2;
}
int main() {
#ifndef DEBUG
ios::sync_with_stdio(0), cin.tie(0);
#endif
cin >> s;
n = SZ(s);
cerr << n << '\n';
REP (i, 0, n) {
mxto(g, s[i] - 'A' + 1);
}
dp[0] = 0;
REP (i, 1, 1 << g) {
dp[i] = LINF;
REP (j, 0, g) {
if (i >> j & 1 ^ 1) {
continue;
}
int ni = i ^ (1 << j);
int all = 0;
REP (k, 0, n) {
if (ni >> (s[k] - 'A') & 1) {
all++;
}
}
int acnt = 0, ajc = 0;
ll cur = 0;
RREP (k, n - 1, 0) {
if (s[k] - 'A' == j) {
cur += acnt * 2;
ajc++;
} else if (ni >> (s[k] - 'A') & 1) {
acnt++;
}
}
ll mn = cur + calc(ajc);
int jc = 0, cnt = 0;
REP (k, 0, n) {
if (s[k] - 'A' == j) {
cur += cnt * 2;
cur -= acnt * 2;
jc++;
} else if (ni >> (s[k] - 'A') & 1) {
cnt++;
acnt--;
}
mnto(mn, cur + calc(jc) + calc(ajc - jc));
}
mnto(dp[i], dp[ni] + mn);
}
}
ll ans = dp[(1 << g) - 1];
if (ans % 2 == 0) {
ans /= 2;
cout << ans << '\n';
} else {
ans /= 2;
cout << ans << ".5\n";
}
return 0;
}
Compilation message
passes.cpp: In function 'int main()':
passes.cpp:60:24: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
60 | if (i >> j & 1 ^ 1) {
| ~~~~~~~^~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
284 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 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 |
2 ms |
468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
328 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
332 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
328 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
328 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
332 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
328 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
1 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
212 KB |
Output is correct |
22 |
Correct |
1 ms |
212 KB |
Output is correct |
23 |
Correct |
0 ms |
212 KB |
Output is correct |
24 |
Correct |
0 ms |
212 KB |
Output is correct |
25 |
Correct |
1 ms |
212 KB |
Output is correct |
26 |
Correct |
1 ms |
212 KB |
Output is correct |
27 |
Correct |
1 ms |
212 KB |
Output is correct |
28 |
Correct |
1 ms |
212 KB |
Output is correct |
29 |
Correct |
1 ms |
212 KB |
Output is correct |
30 |
Correct |
1 ms |
212 KB |
Output is correct |
31 |
Correct |
1 ms |
212 KB |
Output is correct |
32 |
Correct |
1 ms |
212 KB |
Output is correct |
33 |
Correct |
0 ms |
212 KB |
Output is correct |
34 |
Correct |
0 ms |
212 KB |
Output is correct |
35 |
Correct |
40 ms |
340 KB |
Output is correct |
36 |
Correct |
40 ms |
332 KB |
Output is correct |
37 |
Correct |
421 ms |
348 KB |
Output is correct |
38 |
Correct |
218 ms |
476 KB |
Output is correct |
39 |
Correct |
209 ms |
340 KB |
Output is correct |
40 |
Correct |
236 ms |
340 KB |
Output is correct |
41 |
Correct |
209 ms |
340 KB |
Output is correct |
42 |
Correct |
226 ms |
340 KB |
Output is correct |
43 |
Correct |
210 ms |
476 KB |
Output is correct |
44 |
Correct |
235 ms |
468 KB |
Output is correct |
45 |
Correct |
216 ms |
344 KB |
Output is correct |
46 |
Correct |
214 ms |
588 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
284 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 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 |
2 ms |
468 KB |
Output is correct |
10 |
Correct |
0 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
0 ms |
328 KB |
Output is correct |
16 |
Correct |
1 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
212 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
0 ms |
212 KB |
Output is correct |
21 |
Correct |
1 ms |
212 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
212 KB |
Output is correct |
24 |
Correct |
1 ms |
212 KB |
Output is correct |
25 |
Correct |
1 ms |
212 KB |
Output is correct |
26 |
Correct |
1 ms |
328 KB |
Output is correct |
27 |
Correct |
1 ms |
212 KB |
Output is correct |
28 |
Correct |
1 ms |
212 KB |
Output is correct |
29 |
Correct |
1 ms |
212 KB |
Output is correct |
30 |
Correct |
1 ms |
212 KB |
Output is correct |
31 |
Correct |
1 ms |
212 KB |
Output is correct |
32 |
Correct |
0 ms |
212 KB |
Output is correct |
33 |
Correct |
0 ms |
212 KB |
Output is correct |
34 |
Correct |
1 ms |
212 KB |
Output is correct |
35 |
Correct |
1 ms |
212 KB |
Output is correct |
36 |
Correct |
1 ms |
212 KB |
Output is correct |
37 |
Correct |
1 ms |
212 KB |
Output is correct |
38 |
Correct |
1 ms |
212 KB |
Output is correct |
39 |
Correct |
1 ms |
212 KB |
Output is correct |
40 |
Correct |
1 ms |
212 KB |
Output is correct |
41 |
Correct |
1 ms |
212 KB |
Output is correct |
42 |
Correct |
0 ms |
212 KB |
Output is correct |
43 |
Correct |
0 ms |
212 KB |
Output is correct |
44 |
Correct |
40 ms |
340 KB |
Output is correct |
45 |
Correct |
40 ms |
332 KB |
Output is correct |
46 |
Correct |
421 ms |
348 KB |
Output is correct |
47 |
Correct |
218 ms |
476 KB |
Output is correct |
48 |
Correct |
209 ms |
340 KB |
Output is correct |
49 |
Correct |
236 ms |
340 KB |
Output is correct |
50 |
Correct |
209 ms |
340 KB |
Output is correct |
51 |
Correct |
226 ms |
340 KB |
Output is correct |
52 |
Correct |
210 ms |
476 KB |
Output is correct |
53 |
Correct |
235 ms |
468 KB |
Output is correct |
54 |
Correct |
216 ms |
344 KB |
Output is correct |
55 |
Correct |
214 ms |
588 KB |
Output is correct |
56 |
Correct |
21 ms |
568 KB |
Output is correct |
57 |
Correct |
50 ms |
548 KB |
Output is correct |
58 |
Correct |
1 ms |
212 KB |
Output is correct |
59 |
Correct |
0 ms |
212 KB |
Output is correct |
60 |
Correct |
0 ms |
212 KB |
Output is correct |
61 |
Correct |
0 ms |
212 KB |
Output is correct |
62 |
Correct |
0 ms |
332 KB |
Output is correct |
63 |
Correct |
1 ms |
468 KB |
Output is correct |
64 |
Correct |
1 ms |
544 KB |
Output is correct |
65 |
Correct |
1 ms |
504 KB |
Output is correct |
66 |
Correct |
1 ms |
468 KB |
Output is correct |
67 |
Correct |
0 ms |
336 KB |
Output is correct |
68 |
Correct |
0 ms |
212 KB |
Output is correct |
69 |
Correct |
1 ms |
212 KB |
Output is correct |
70 |
Correct |
1 ms |
212 KB |
Output is correct |
71 |
Correct |
1 ms |
212 KB |
Output is correct |
72 |
Correct |
0 ms |
212 KB |
Output is correct |
73 |
Correct |
1 ms |
212 KB |
Output is correct |
74 |
Correct |
0 ms |
212 KB |
Output is correct |
75 |
Correct |
1 ms |
328 KB |
Output is correct |
76 |
Correct |
0 ms |
212 KB |
Output is correct |
77 |
Correct |
1 ms |
212 KB |
Output is correct |
78 |
Correct |
0 ms |
212 KB |
Output is correct |
79 |
Correct |
0 ms |
212 KB |
Output is correct |
80 |
Correct |
0 ms |
212 KB |
Output is correct |
81 |
Correct |
1 ms |
212 KB |
Output is correct |
82 |
Correct |
0 ms |
212 KB |
Output is correct |
83 |
Correct |
1 ms |
212 KB |
Output is correct |
84 |
Correct |
39 ms |
340 KB |
Output is correct |
85 |
Correct |
43 ms |
340 KB |
Output is correct |
86 |
Correct |
417 ms |
344 KB |
Output is correct |
87 |
Correct |
198 ms |
340 KB |
Output is correct |
88 |
Correct |
195 ms |
340 KB |
Output is correct |
89 |
Correct |
219 ms |
340 KB |
Output is correct |
90 |
Correct |
208 ms |
340 KB |
Output is correct |
91 |
Correct |
206 ms |
464 KB |
Output is correct |
92 |
Correct |
205 ms |
336 KB |
Output is correct |
93 |
Correct |
210 ms |
340 KB |
Output is correct |
94 |
Correct |
207 ms |
340 KB |
Output is correct |
95 |
Correct |
216 ms |
460 KB |
Output is correct |
96 |
Execution timed out |
2079 ms |
596 KB |
Time limit exceeded |
97 |
Halted |
0 ms |
0 KB |
- |