Problem: Vasya has a multiset s consisting of n integer numbers. Vasya calls some number x nice if it appears in the multiset exactly once. For example, multiset \{1, 1, 2, 3, 3, 3, 4\} contains nice numbers 2 and 4.

Vasya wants to split multiset s into two multisets a and b (one of which may be empty) in such a way that the quantity of nice numbers in multiset a would be the same as the quantity of nice numbers in multiset b (the quantity of numbers to appear exactly once in multiset a and the quantity of numbers to appear exactly once in multiset b).

Input

The first line contains a single integer n~(2 ≤ n ≤ 100).

The second line contains n integers s_1, s_2, ... s_n~(1 ≤ s_i ≤ 100) — the multiset s.

Output

If there exists no split of s to satisfy the given requirements, then print "NO" in the first line.

Otherwise print "YES" in the first line.

The second line should contain a string, consisting of n characters. i-th character should be equal to 'A' if the i-th element of multiset s goes to multiset a and 'B' if if the i-th element of multiset s goes to multiset b. Elements are numbered from 1 to n in the order they are given in the input.

If there exist multiple solutions, then print any of them.

Examples

Input

4
3 5 7 1


Output

YES
BABA


Input

3
3 5 1


Output

NO

Solution (in PYTHON3):

Solution:
n=int(input())
a=input().split()
z={}
ans=['A']*n
for x in a:
    if x in z.keys():
        z[x]+=1
    else:
        z[x]=1
kb,ka=0,0
for i,x in enumerate(a):
    if z[x]==1:
        if ka>kb:
            kb+=1
            ans[i]='B'
        else:
            ka+=1
            ans[i]='A'
if ka>kb:
    for i,x in enumerate(a):
        if z[x]>2:
            ans[i]='B'
            kb+=1
            break
if ka==kb:
    print("YES")
    print(''.join(ans))
else:
    print("NO")