#include<iostream>
#include<cmath>
#include<cstring>
using namespace std;
int main()
{
	string a,b;
	cin>>a;
	unsigned long long n;
	cin>>n;
	while(a.size()<=n)
	{
		b=a;
		a+=b[b.size()-1];
		for(unsigned long long i=0;i<b.size()-1;i++)a+=b[i];
	}
	cout<<a[n-1]; 
	return 0;
}