source_code: import java.io.*;
  import java.util.*;
  public class Main {
      public static void main(String args[])
      {
          FastReader input=new FastReader();
          PrintWriter out=new PrintWriter(System.out);
          int T=1;
          while(T-->0)
          {
              long k=input.nextLong();
              long v=9;
              long s=0;
              int x=1;
              while(true)
              {
                  if(s+v*x>k)
                  {
                      break;
                  }
                  s+=v*x;
                  v*=10;
                  x++;
              }
              if(s==k)
              {
                  out.println(9);
              }
              else
              {
                  long d=k-s;
                  long u=d/x;
                  long rem=d%x;
                  long nu=(long)Math.pow(10,x-1);
                  nu+=u;
                  if(rem==0)
                  {
                      nu--;
                      out.println(nu%10);
                  }
                  else
                  {
                      String str=String.valueOf(nu);
                      out.println(str.charAt((int)(rem-1)));
                  }
              }
          }
          out.close();
      }
      static class FastReader
      {
          BufferedReader br;
          StringTokenizer st;
          public FastReader()
          {
              br = new BufferedReader(new InputStreamReader(System.in));
          }
          String next()
          {
              while (st == null || !st.hasMoreElements())
              {
                  try
                  {
                      st = new StringTokenizer(br.readLine());
                  }
                  catch (IOException e)
                  {
                      e.printStackTrace();
                  }
              }
              return st.nextToken();
          }
          int nextInt()
          {
              return Integer.parseInt(next());
          }
          long nextLong()
          {
              return Long.parseLong(next());
          }
          double nextDouble()
          {
              return Double.parseDouble(next());
          }
          String nextLine()
          {
              String str = "";
              try
              {
                  str = br.readLine();
              }
              catch (IOException e)
              {
                  e.printStackTrace();
              }
              return str;
          }
      }
  }