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Submission #402692

# Submission time Handle Problem Language Result Execution time Memory
402692 2021-05-12T09:08:14 Z BERNARB01 Palindromes (APIO14_palindrome) C++17
100 / 100
 28 ms 35400 KB 
#include <bits/stdc++.h>

using namespace std;

template<const int A>
class eertree {
private:
	string s;
	int n, id, cr, I;
	vector<int> P, L, C;
	vector<array<int, A>> T;
	int par(int v) {
		while (I - L[v] - 2 < 0 || s[I - L[v] - 2] != s[I - 1]) {
			v = P[v];
		}
		return v;
	}
	void add() {
		int ch = s[I++] - 'a';
		cr = par(cr);
		if (!T[cr][ch]) {
			L[id] = L[cr] + 2;
			P[id] = T[par(P[cr])][ch];
			T[cr][ch] = id++;
		}
		cr = T[cr][ch];
		C[cr]++;
	}
public:
	eertree(const string& _s) {
		s = _s;
		n = s.length();
		id = 2;
		cr = I = 0;
		P.assign(n + 2, 0);
		L.assign(n + 2, 0);
		C.assign(n + 2, 0);
		T.assign(n + 2, {});
		L[1] = -1;
		P[0] = 1;
		for (int i = 0; i < n; i++) {
			add();
		}
	}
	long long solve() {
		for (int i = n + 1; i > 1; i--) {
			C[P[i]] += C[i];
		}
		long long res = 0;
		for (int i = 2; i < n + 2; i++) {
			res = max(res, L[i] * 1LL * C[i]);
		}
		return res;
	}
};

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	string s;
	cin >> s;
	cout << eertree<26>(s).solve() << '\n';
	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 312 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 316 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 312 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 308 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 312 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 312 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1472 KB Output is correct
2 Correct 2 ms 1484 KB Output is correct
3 Correct 2 ms 1484 KB Output is correct
4 Correct 2 ms 1484 KB Output is correct
5 Correct 2 ms 1484 KB Output is correct
6 Correct 2 ms 1484 KB Output is correct
7 Correct 2 ms 1484 KB Output is correct
8 Correct 2 ms 1484 KB Output is correct
9 Correct 2 ms 1484 KB Output is correct
10 Correct 2 ms 1484 KB Output is correct

Subtask #4
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 12004 KB Output is correct
2 Correct 11 ms 11904 KB Output is correct
3 Correct 9 ms 11952 KB Output is correct
4 Correct 10 ms 12000 KB Output is correct
5 Correct 10 ms 11976 KB Output is correct
6 Correct 10 ms 11984 KB Output is correct
7 Correct 10 ms 11996 KB Output is correct
8 Correct 9 ms 11980 KB Output is correct
9 Correct 9 ms 11980 KB Output is correct
10 Correct 9 ms 12000 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 35392 KB Output is correct
2 Correct 28 ms 35288 KB Output is correct
3 Correct 27 ms 35284 KB Output is correct
4 Correct 27 ms 35384 KB Output is correct
5 Correct 26 ms 35364 KB Output is correct
6 Correct 26 ms 35380 KB Output is correct
7 Correct 26 ms 35384 KB Output is correct
8 Correct 22 ms 35284 KB Output is correct
9 Correct 24 ms 35400 KB Output is correct
10 Correct 26 ms 35348 KB Output is correct
11 Correct 27 ms 35312 KB Output is correct
12 Correct 23 ms 35284 KB Output is correct