func_code_string: #include <bits/stdc++.h>   using namespace std;   int k, res;   string s;   int cs(int x) {     int dem(0);     while (x != 0) {       x /= 10;       dem++;     }     return dem;   }   int main() {     int t;     cin >> t;     while (t--) {       cin >> k;       res = 0;       int ii;       for (int i = 1; i <= 100000000; ++i) {         ii = i;         res += cs(i);         if (k <= res) break;         k -= res;       }       res = 0;       for (int i = 1; i <= ii; ++i) {         res += cs(i);         if (res >= k) {           res -= cs(i);           ii = i;           break;         }       }       ostringstream convert;       convert.clear();       convert << ii;       s = convert.str();       cout << s[k - res - 1] << endl;     }     return 0;   }   