func_code_string: #include <bits/stdc++.h>   using namespace std;   int32_t main() {     ios::sync_with_stdio(0);     cin.tie(0);     long long a, b;     cin >> a >> b;     long long count = 0;     while (b >= a) {       ostringstream str1;       str1 << a;       string str2 = str1.str();       for (long long i = 0; i < str2.length(); i++) {         if (str2[i] ==  2  || str2[i] ==  3  || str2[i] ==  5 ) {           count += 5;         } else if (str2[i] ==  0  || str2[i] ==  6  || str2[i] ==  9 ) {           count += 6;         } else if (str2[i] ==  1 ) {           count += 2;         } else if (str2[i] ==  4 ) {           count += 4;         } else if (str2[i] ==  7 ) {           count += 3;         } else if (str2[i] ==  8 ) {           count += 7;         }       }       a++;     }     cout << count << endl;     return 0;   }   