#include <iostream>
using namespace std;
const int N = 5 << 16, A = 26;
int link[N], len[N], nxt[N][A], occ[N], cnt = 2, lst = 2;
char s[N];
signed main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> s;
len[1] = -1; link[1] = 1;
len[2] = -0; link[2] = 1;
for (int i = 0; s[i]; ++i) {
int cur = lst, a = s[i] - 'a';
while (s[i - len[cur] - 1] != s[i]) cur = link[cur];
int &tmp = nxt[cur][a];
if (!tmp) {
tmp = ++cnt;
len[tmp] = len[cur] + 2;
if (cur != 1) {
cur = link[cur];
while (s[i - len[cur] - 1] != s[i]) cur = link[cur];
link[tmp] = nxt[cur][a];
} else link[tmp] = 2;
}
lst = tmp; ++occ[lst];
}
long long ans = 0;
for (int i = cnt; i > 2; --i) {
occ[link[i]] += occ[i];
ans = max(ans, 1ll * occ[i] * len[i]);
}
cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
5 ms |
384 KB |
Output is correct |
| 3 |
Correct |
4 ms |
384 KB |
Output is correct |
| 4 |
Correct |
4 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
5 ms |
384 KB |
Output is correct |
| 8 |
Correct |
4 ms |
384 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
4 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
5 ms |
384 KB |
Output is correct |
| 13 |
Correct |
4 ms |
384 KB |
Output is correct |
| 14 |
Correct |
5 ms |
384 KB |
Output is correct |
| 15 |
Correct |
5 ms |
384 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
4 ms |
384 KB |
Output is correct |
| 18 |
Correct |
4 ms |
384 KB |
Output is correct |
| 19 |
Correct |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
5 ms |
384 KB |
Output is correct |
| 21 |
Correct |
5 ms |
384 KB |
Output is correct |
| 22 |
Correct |
5 ms |
384 KB |
Output is correct |
| 23 |
Correct |
5 ms |
384 KB |
Output is correct |
| 24 |
Correct |
5 ms |
384 KB |
Output is correct |
| 25 |
Correct |
4 ms |
384 KB |
Output is correct |
| 26 |
Correct |
5 ms |
384 KB |
Output is correct |
| 27 |
Correct |
5 ms |
384 KB |
Output is correct |
| 28 |
Correct |
5 ms |
384 KB |
Output is correct |
| 29 |
Correct |
5 ms |
384 KB |
Output is correct |
| 30 |
Correct |
4 ms |
384 KB |
Output is correct |
| 31 |
Correct |
5 ms |
512 KB |
Output is correct |
| 32 |
Correct |
5 ms |
384 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
512 KB |
Output is correct |
| 2 |
Correct |
5 ms |
512 KB |
Output is correct |
| 3 |
Correct |
5 ms |
512 KB |
Output is correct |
| 4 |
Correct |
6 ms |
512 KB |
Output is correct |
| 5 |
Correct |
5 ms |
512 KB |
Output is correct |
| 6 |
Correct |
5 ms |
512 KB |
Output is correct |
| 7 |
Correct |
5 ms |
512 KB |
Output is correct |
| 8 |
Correct |
5 ms |
512 KB |
Output is correct |
| 9 |
Correct |
4 ms |
512 KB |
Output is correct |
| 10 |
Correct |
5 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
5 ms |
512 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
1536 KB |
Output is correct |
| 2 |
Correct |
5 ms |
1536 KB |
Output is correct |
| 3 |
Correct |
6 ms |
1536 KB |
Output is correct |
| 4 |
Correct |
5 ms |
1536 KB |
Output is correct |
| 5 |
Correct |
6 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
5 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
5 ms |
1536 KB |
Output is correct |
| 8 |
Correct |
5 ms |
384 KB |
Output is correct |
| 9 |
Correct |
5 ms |
384 KB |
Output is correct |
| 10 |
Correct |
5 ms |
1152 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
14 ms |
11904 KB |
Output is correct |
| 2 |
Correct |
14 ms |
11904 KB |
Output is correct |
| 3 |
Correct |
15 ms |
11904 KB |
Output is correct |
| 4 |
Correct |
14 ms |
11904 KB |
Output is correct |
| 5 |
Correct |
15 ms |
11904 KB |
Output is correct |
| 6 |
Correct |
12 ms |
8832 KB |
Output is correct |
| 7 |
Correct |
13 ms |
10112 KB |
Output is correct |
| 8 |
Correct |
6 ms |
768 KB |
Output is correct |
| 9 |
Correct |
9 ms |
3200 KB |
Output is correct |
| 10 |
Correct |
14 ms |
10240 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
34 ms |
35064 KB |
Output is correct |
| 2 |
Correct |
32 ms |
35064 KB |
Output is correct |
| 3 |
Correct |
34 ms |
34936 KB |
Output is correct |
| 4 |
Correct |
34 ms |
35068 KB |
Output is correct |
| 5 |
Correct |
32 ms |
34944 KB |
Output is correct |
| 6 |
Correct |
30 ms |
31232 KB |
Output is correct |
| 7 |
Correct |
32 ms |
29312 KB |
Output is correct |
| 8 |
Correct |
9 ms |
1152 KB |
Output is correct |
| 9 |
Correct |
10 ms |
1152 KB |
Output is correct |
| 10 |
Correct |
27 ms |
28792 KB |
Output is correct |
| 11 |
Correct |
32 ms |
35064 KB |
Output is correct |
| 12 |
Correct |
12 ms |
4224 KB |
Output is correct |
