func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     long long a, b, c;     cin >> a >> b;     c = a + b;     string s = to_string(a);     string x = to_string(b);     string y = to_string(c);     string e =   , f =   , g =   ;     for (int i = 0; i < s.size(); i++) {       if (s[i] !=  0 ) {         e += s[i];       }     }     for (int i = 0; i < x.size(); i++) {       if (x[i] !=  0 ) {         f += x[i];       }     }     for (int i = 0; i < y.size(); i++) {       if (y[i] !=  0 ) {         g += y[i];       }     }     long long m, n, p;     m = stoi(e);     n = stoi(f);     p = stoi(g);     if (m + n == p)       cout <<  YES n ;     else       cout <<  NO n ;   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     int t;     t = 1;     while (t--) {       solve();     }     return 0;   }   