func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a, b, c = 0;     cin >> a >> b;     int x[10] = {6, 2, 5, 5, 4, 5, 6, 3, 7, 6};     for (int i = a; i <= b; i++) {       int y = i;       while (y != 0) {         c += x[y % 10];         y = y / 10;       }     }     cout << c;     return 0;   }   