#include <iostream>
#include <cstdint>
#include <vector>
#include <string>

using std::vector;
using std::string;

class Solution {
public:
    string firstPalindrome(vector<string>& words) {
        auto len = words.size();
        auto i = len;
        for ( i = 0; i < len; ++i ) {
            string s = words[i];
            unsigned int slen = (unsigned int)s.length() - 1;
            unsigned int end = ((unsigned int) (slen / 2)) + 1;

            for ( unsigned int j = 0; j < end; ++j ) {
                if ( s[j] != s[slen-j] ) { goto outer; }
            }

            return s;
        outer: ;
        }
        return "";
    }
};

void r(vector<string>& w) {
    std::cout << "Solution().firstPalindrome([";
    for ( uint64_t i = 0; i < w.size(); ++i ) {
        if ( i == 0 ) { std::cout << "\"" << w[i] << "\""; continue; }
        std::cout << ", \"" << w[i] << "\"";
    }
    std::cout << "]) = \"" << Solution().firstPalindrome(w) << "\"";
};

int main(void) {

    vector<string> w1 = {"abc", "car", "ada", "racecar", "cool"};
    r(w1);

    return 0;
}