import java.util.Scanner;

public class No756
{
	public static void main(String args[])
	{
		Scanner sc = new Scanner(System.in);
		int c = sc.nextInt();
		String str = "";

		for( int i = 0; i <= c; i++ )
		{ str += i; }

		System.out.println( str.substring( c, c+1 ) ); // c番目の文字を表示
	}
}