func_code_string: #include <bits/stdc++.h>   using namespace std;   long long ansp[200001];   int main() {     long long k;     memset(ansp, 0, sizeof(ansp));     scanf( %lld , &k);     char s[200001], t[200001], ans[200001];     scanf( %s %s , s, t);     long long add = 0, dec = 0, again = 0;     long long i, j;     for (i = 0; i < k; i++) {       long long x = s[i] -  a , y = t[i] -  a  + add;       add = 0;       if ((x + y) % 2 != 0) {         add = 26;         y--;       }       long long now = (x + y) / 2;       ansp[i] = now;     }     for (i = k - 1; i >= 0; i--) {       ansp[i - 1] += ansp[i] / 26;       ansp[i] %= 26;     }     for (i = 0; i < k; i++) printf( %c , (char)(ansp[i] +  a ));   }   