Submission #2528643

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

bool isPalindrome(string& s) {
    bool ok = true;
    for (int i = 0; 2 * i < s.size(); i++) {
        ok = s[i] == s[s.size() - 1 - i];
        if (!ok) {
            break;
        }
    }
    return ok;
}

int main() {
    string s;
    cin >> s;
    ll ans = 0;
    for (int i = 0; i <= s.size(); i++) {
        string t(s);
        t.resize(i);
        reverse(t.begin(), t.end());
        string ss(s + t);
        if (isPalindrome(ss)) {
            ans = i;
            break;
        }
    }
    cout << ans << endl;
    return 0;
}

Submission Info

Judge Result