func_code_string: #include <bits/stdc++.h>   using namespace std;   int atoi(string s) {     int sol = 0, st = 1;     for (int i = 0; i < int(s.size()); i++) {       sol += (s[i] - 48) * st;       st *= 10;     }     return sol;   }   int main() {     string a, b;     cin >> a >> b;     reverse(a.begin(), a.end());     cout << atoi(a) + atoi(b) << endl;   }   