#include<stdio.h>

int ThuanNghich(int n)
{
	int c, m=1, tg;
	tg=n;
	m=tg%10;
	do
	{
		n=n/10;
		m=m*10+n%10;
	}
	while(n>=10);
	if (m==tg)
		return 1;
	else
		return 0;
}
int main()
{
	int a[100], n, d = 0;

	scanf("%d", &n);
	for (int i = 0; i < n; i++ )
	{
		scanf("%d", &a[i]);
	}
	for (int i = 0; i < n; i++ )
	{
		if (ThuanNghich(a[i])) d++;
	}
	printf("%d ", d);
	for (int i = 0; i < n; i++ )
	{
		if (ThuanNghich(a[i])) printf("%d ", a[i]);
	}
	return 0;

}