#include<iostream>
#include<cstdio>
using namespace std;int c;
void work(int b,int a)
{
if(a==0)cout<<c;
else
{
c=b%10;
work(b/10,a-1);
}
}
int main()
{
int m,n;
scanf("%d%d",&m,&n);
work(m,n);
return 0;
}100'