#include <stdio.h>

int main(void)
{ int i = 0, j = 0, flg;
  int pos[11] = {0}, result = 1;
  char a[11], b[11];

  scanf("%s%s", a, b);
  while(a[i] != '\0'){
    j = 0;
    while(a[j] != '\0'){
      if((a[i] == b[j]) && (pos[j] == 0)){
        pos[j] = 1;
        break;
      }
      j++;
    }
    i++;
  }
  j = i;
  for(i = 0; i < j; i++){
    result *= pos[i];
  }
  if(result){
    printf("YES\n");
  }else{
    printf("No\n");
  }

  return 0;
}