func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n, last = 0, count = 0, sum, sum1;       cin >> n;       while (n >= 10) {         last = n / 10;         n = n / 10;         count += 1;       }       if (count + 1 == 1)         sum1 = 1;       else if (count + 1 == 2)         sum1 = 3;       else if (count + 1 == 3)         sum1 = 6;       else if (count + 1 == 4)         sum1 = 10;       sum = (last - 1) * 10 + sum1;       if (n > 10)         cout << sum << endl;       else {         last = n;         sum = (last - 1) * 10 + sum1;         cout << sum << endl;       }     }   }   