source_code: import java.io.FileNotFoundException;
  import java.util.Scanner;
  
  public class P1177A {
  
      public static void main(String[] args) throws FileNotFoundException {
  
          Scanner in = new Scanner(System.in);
          // Scanner in = new Scanner(new File("input.txt"));
          System.out.println(solve(in.nextLong()));
  
      }
  
      private static String solve(long k) {
  
          long digitCnt = 1;
          long nine = 9;
  
          while (k > nine * digitCnt) {
              k -= nine * digitCnt;
              nine *= 10;
              digitCnt++;
          }
  
          long num = nine / 9 - 1 + (k - 1) / digitCnt + 1;
          return String.valueOf(String.valueOf(num).charAt((int) ((k - 1) % digitCnt)));
  
      }
  
  }
  