Problem:
Score : 200 points

Problem Statement

You are given strings s and t, consisting of lowercase English letters.
You will create a string s' by freely rearranging the characters in s.
You will also create a string t' by freely rearranging the characters in t.
Determine whether it is possible to satisfy s' < t' for the lexicographic order.

Notes

For a string a = a_1 a_2 ... a_N of length N and a string b = b_1 b_2 ... b_M of length M, we say a < b for the lexicographic order if either one of the following two conditions holds true:

N < M and a_1 = b_1, a_2 = b_2, ..., a_N = b_N.

There exists i (1 \leq i \leq N, M) such that a_1 = b_1, a_2 = b_2, ..., a_{i - 1} = b_{i - 1} and a_i < b_i. Here, letters are compared using alphabetical order.

For example, xy < xya and atcoder < atlas.

Constraints

The lengths of s and t are between 1 and 100 (inclusive).

s and t consists of lowercase English letters.

Input

Input is given from Standard Input in the following format:

s
t

Output

If it is possible to satisfy s' < t', print Yes; if it is not, print No.

Sample Input 1

yx
axy

Sample Output 1

Yes

We can, for example, rearrange yx into xy and axy into yxa. Then, xy < yxa.

Sample Input 2

ratcode
atlas

Sample Output 2

Yes

We can, for example, rearrange ratcode into acdeort and atlas into tslaa. Then, acdeort < tslaa.

Sample Input 3

cd
abc

Sample Output 3

No

No matter how we rearrange cd and abc, we cannot achieve our objective.

Sample Input 4

w
ww

Sample Output 4

Yes

Sample Input 5

zzz
zzz

Sample Output 5

No

Solution in C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int compare(const void *a, const void *b) {
  return *(char *)a - *(char *)b;
}
int compareReverse(const void *a, const void *b) {
  return *(char *)b - *(char *)a;
}
int main() {
  char s[101], t[101];
  unsigned slen, tlen, i, lmin;
  scanf("%s", s);
  scanf("%s", t);
  slen = strlen(s);
  tlen = strlen(t);
  lmin = slen > tlen ? tlen : slen;
  qsort(s, slen, sizeof(char), compare);
  qsort(t, tlen, sizeof(char), compareReverse);
  for (i = 0; i < lmin; i++) {
    if (s[i] < t[i]) {
      puts("Yes");
      return 0;
    } else if (s[i] > t[i]) {
      puts("No");
      return 0;
    }
  }
  puts(slen < tlen ? "Yes" : "No");
  return 0;
}