func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, ret, f[26];   vector<pair<pair<int, int>, int> > ss;   int call(char c) { return int(c) - int( a ); }   int main() {     cin >> n;     string s;     for (int i = 1; i <= n; i++) {       cin >> s;       ss.push_back(make_pair(make_pair(call(s[0]), call(s[long(s.length()) - 1])),                              long(s.length())));     }     ret = 0;     for (int c = 0; c < 26; c++) {       fill(f + 0, f + 26, 0);       for (int i = 0; i < n; i++) {         if ((ss[i].first.first == c) || (f[ss[i].first.first] > 0)) {           f[ss[i].first.second] =               max(f[ss[i].first.second], f[ss[i].first.first] + ss[i].second);         }       }       ret = max(ret, f[c]);     }     printf( %d , ret);     return 0;   }   