Submission #1119465

#	Time	Username	Problem	Language	Result	Execution time	Memory
1119465		vjudge1	Palindromes (APIO14_palindrome)	C++17	23 / 100	1048 ms	10484 KiB

palindrome

#include <iostream>
#include <vector>
#include <deque>
#include <algorithm>
#include <set>
#include <map>
#include <numeric>
#include <list>
#include <array>
#include <utility>
#include <cmath>
#include <tuple>
#include <queue>
#include <iomanip>
#include <unordered_map>
using namespace std;

#define sx (int)s.size()
#define send {ios_base::sync_with_stdio(false);}
#define help {cin.tie(NULL);}
#define f first
#define s second
#define getunique(v) {sort(v.begin(), v.end()); v.erase(unique(v.begin(), v.end()), v.end());}
typedef long long ll;
typedef long double lld;
typedef unsigned long long ull;
const int N = 1e6;
string s;
int mx() {
	int temp = s.size();
	unordered_map <string, int> palindrom;
	int mxv = 0;
	auto cnt = [&] (int l, int r) {
		while (l >= 0 && r < temp && s[l] == s[r]) {
			string pal = s.substr(l, r - l + 1);
			palindrom[pal]++;
			l--;
			r++;
		}
	};
	for (int i = 0; i < temp; ++i) {
		cnt(i, i);
		cnt(i, i + 1);
	}
	for (auto i : palindrom) {
		int nw = i.s * (i.f).size();
		mxv = max(mxv, nw);
	}
	return mxv;
}
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> s;
	cout<<mx();
    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 0 / 24
• Subtask 4: 0 / 26
• Subtask 5: 0 / 27