#include <stdio.h>
#include <string.h>

int main(void)
{
	char a[11], b[11];
	unsigned count = 0;
	unsigned i, j;

	scanf("%s", a);
	scanf("%s", b);

	for (i = 0; i < strlen(a); i++) {
		for (j = 0; j < strlen(b); j++) {
			if (a[i] == b[j])
				count++;
		}
	}
	if (count == strlen(a))
		puts("YES");
	else
		puts("NO");

	return 0;
}