#include <stdio.h>
int main() {
  char A[10] = {'\0'}, B[10] = {'\0'};
  int i, j, count = 0;
  scanf("%s %s", A, B);
  //printf("A=%s B=%s\n", A, B);
  for (i = 0; A[i] != '\0'; i++) {
    for (j = 0; B[j] != '\0'; j++) {
      if (A[i] == B[j]) {
        count++;
        B[j] = '0';
        break;
      }
    }
  }
  //printf("count=%d i=%d\n", count, i);
  if (count == i) {
    printf("YES\n");
  } else {
    printf("NO\n");
  }
  return 0;
}