func_code_string: #include <bits/stdc++.h>   using namespace std;   int countdigits(int n) {     int i, b = 0;     while (n) {       b++;       n = n / 10;     }     return b;   }   int main() {     int t, i, n, x, cnt = 0;     cin >> t;     for (i = 0; i < t; i++) {       cin >> n;       cnt = countdigits(n);       n = n % 10;       if (cnt == 1) {         x = (n - 1) * 10 + 1;       }       if (cnt == 2) {         x = (n - 1) * 10 + 3;       }       if (cnt == 3) {         x = (n - 1) * 10 + 6;       }       if (cnt == 4) {         x = (n - 1) * 10 + 10;       }       cout << x << endl;       x = 0;     }   }   