func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     int digit[10] = {2, 7, 2, 3, 3, 4, 2, 5, 1, 2};     string n;     cin >> n;     int a = digit[(n[1] - 48)];     int b = digit[(n[0] - 48)];     cout << a * b;     return 0;   }   