#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
int main()
{
	char arr[10000] = { 0 };
	int i = 0;
	int k = 0;
	while ((arr[i] = getchar()) != ' ')
	{
		i = i + 1;
	}
	scanf("%d", &k);
	int ret = strlen(arr);
	printf("%c", arr[ret-k-1]);
	return 0;
}