import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S= sc.next();
        String[] SArray = new String[S.length()];
        long K=sc.nextLong();
        long num=0;
        for (int i = 0; i < S.length(); i++) {
            SArray[i] = String.valueOf(S.charAt(i));
            int a=Integer.parseInt(SArray[i]);
            if(a!=1)num +=K+1;
            else num++;
            if(num>=K){
                System.out.println(SArray[i]);
                return;
            }
        }
        
    }
}

/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