Submission #561400

#	Time	Username	Problem	Language	Result	Execution time	Memory
561400		Ooops_sorry	Palindromes (APIO14_palindrome)	C++14	8 / 100	1104 ms	131072 KiB

palindrome

#include<bits/stdc++.h>

using namespace std;

#define pb push_back
#define ld long double
#define ll long long

mt19937 rnd(51);

const int INF = 1e9;

bool is_palindrome(string s) {
    return s == (string){s.rbegin(), s.rend()};
}

int solve1(string s) {
    int n = s.size(), ans = -INF;
    map<string, int> cnt;
    for (int i = 0; i < n; i++) {
        for (int j = 1; j + i <= n; j++) {
            cnt[s.substr(i, j)]++;
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = n - i; j >= 1; j--) {
            if (is_palindrome(s.substr(i, j))) {
                ans = max(ans, cnt[s.substr(i, j)] * j);
                break;
            }
        }
    }
    return ans;
}

int solve2(string s) {
    int n = s.size(), ans = -INF;
    map<string, int> cnt;
    for (int i = 0; i < n; i++) {
        for (int j = 1; j + i <= n; j++) {
            cnt[s.substr(i, j)]++;
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 1; j + i <= n; j++) {
            if (is_palindrome(s.substr(i, j))) {
                ans = max(ans, cnt[s.substr(i, j)] * j);
            }
        }
    }
    return ans;
}

signed main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
#endif // LCOAL
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    string s;
    cin >> s;
    cout << solve1(s) << endl;
    return 0;
}

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