import java.util.*;
public class Main{
	public static final Scanner sc = new Scanner(System.in);
  	public static void main(String[] arg){
		String s = sc.next();
		long k = sc.nextLong();
        char c;
        char ans = '1';
        for (int i = 0; i<s.length(); i++){
        	c = s.charAt(i);
            if (ans != c){
            	ans = c;
                break;
            }
            k--;
            if (k==0){
            	break;
            }
        }
        System.out.println(ans);
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz