import java.util.*;
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		String S = sc.next();
		long K = sc.nextLong();
		long count = 0;
		char ans = '1';
		if( S.charAt(0)!='1' ){
			ans = S.charAt(0);
		}else{
			for( int i=0; i<S.length(); i++ ){
				if( S.charAt(i)=='1' ){
					count++;
				}else{
					if( count<K ){
						ans = S.charAt(i);
					}
					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