import java.util.Scanner;

class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		long K = sc.nextLong();
		char c = '.';
		for(int i = 0; i < S.length(); i++) {
			if(i == K - 1) {
				c = S.charAt(i);
				break;
			}else if(S.charAt(i) != '1') {
				c = S.charAt(i);
				break;
			}
		}
		System.out.println(c);
	}
}
/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