제출 #647074

#제출 시각아이디문제언어결과실행 시간메모리
647074google회문 (APIO14_palindrome)C++17
23 / 100
1085 ms131072 KiB
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
map<string,ll> m;
int main(){
    cin.tie(0)->sync_with_stdio(0);
    string s; cin >> s;
    int n = int(s.size());
    for (int i = 0;i<n;i++){
        string t = "";
        for (int j = i;j<n;j++){
            t += s[j];
            int sz = t.size()/2, bb = 0;
            for (int i = 0;i<=sz;i++){
                if (t[i] != t[t.size()-i-1]) {
                    bb = 1;
                    break;
                }
            }
            if (bb) continue;
            m[t]++;
        }
    }
    ll ans = 0;
    for (auto [a,b]:m) ans = max(ans,b*int(a.size()));
    cout << ans;
    return 0;
}
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