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:
from collections import Counter
n=int(input())
a=[int(o) for o in input().split()]
d=dict(Counter(a))
j=0
reserve=[]
resul=[-1]*n
for i in range(n):
    if d[a[i]]==1:
        if j%2==0:
            resul[i]="A"
        else:
            resul[i]="B"
        j+=1
    elif d[a[i]]>2:
        resul[i]="A"
        reserve.append(i)
    else:
        resul[i]="A"
if j%2==0:
    print("YES")
    print("".join(resul))
else:
    if reserve:
        resul[reserve[0]]="B"
        print("YES")
        print("".join(resul))
    else:
        print("NO")