source_code: import java.util.Scanner;
  
  public class DigitsSequence {
      public static void main(String[] args){
  
          Scanner sc=new Scanner(System.in);
          long k,c,n,d;
          c=1;
          d=9;
          n=1;
          k= sc.nextLong();
          while(k>(c*d)) {
              k-=(c*d);
              n*=10;
              d*=10;
              c++;
          }
          n+=(k-1)/c;
          char[] num = String.valueOf(n).toCharArray();
          System.out.println(num[(int)((k-1)%c)]);
      }
  
  }
  