#include <stdio.h>
#include <stdlib.h>
#define MAX 100
int main(void) {
char str1[MAX], str2[MAX];
int check1[53] = {0}, check2[53] = {0};
scanf("%s", str1);
scanf("%s", str2);
for (int i = 0; str1[i] != '\0'; i++) {
// Str 1
if (str1[i] >= 65 && str1[i] <= 90) {
check1[str1[i] - 65]++;
} else {
check1[str1[i] - 71]++;
}
// Str 2
if (str2[i] >= 65 && str2[i] <= 90) {
check2[str2[i] - 65]++;
} else {
check2[str2[i] - 71]++;
}
}
for (int i = 0; i < 53; i++) {
if (check1[i] != check2[i]) {
printf("NO\n");
return 0;
}
}
printf("YES\n");
return 0;
}
