func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(0);     cin.tie(NULL);     int tc;     cin >> tc;     while (tc--) {       int n;       cin >> n;       int sum = (n % 10 - 1) * 10;       if (1 <= n) sum += 1;       if (10 <= n) sum += 2;       if (100 <= n) sum += 3;       if (1000 <= n) sum += 4;       cout << sum <<   n ;     }   }   