/**                                                                   
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 */
#include <iostream>
#include <cstdio>
#include <string>
using namespace std;
long long k;
string s;
int main()
{
	cin>>s;
	scanf("%lld",&k);
	for(int i=0;i<k;i++)
	{
		if(s[i]!='1')
		{
			printf("%c\n",s[i]);
			return 0;
		}
	}
	printf("1\n");
	return 0;
}
/**                                                                         
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 */

Measured memory_bytes: 256