source_code:     import java.util.Scanner;
       
      public class ABC {
          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)]);
          }
       
      }
  
  
  				 	     		 	 			   	 	  	  	