func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     int k;     cin >> k;     string s, t;     cin >> s;     cin >> t;     int sarr[k];     int tarr[k];     for (int i = k - 1; i >= 0; i--) {       sarr[i] = s[i] -  a ;       tarr[i] = t[i] -  a ;     }     int sumarr[k + 1];     int carry = 0;     for (int i = k - 1; i >= 0; i--) {       sumarr[i + 1] = (sarr[i] + tarr[i] + carry) % 26;       if (sarr[i] + tarr[i] + carry >= 26) {         carry = 1;       } else {         carry = 0;       }     }     sumarr[0] = carry;     for (int i = 0; i <= k; i++) {       if (sumarr[i] % 2 == 1) {         sumarr[i + 1] += 26;       }       sumarr[i] /= 2;     }     for (int i = 1; i <= k; i++) {       cout << (char)(sumarr[i] +  a );     }     cout << endl;   }   