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:
def main():
    n = int(input())
    s = list(map(int, input().split()))

    cnt, flg = [0] * 101, [0] * 101
    for i in s:
        cnt[i] += 1

    nice, nice2 = [], []
    for i in range(101):
        if cnt[i] == 1:
            nice.append(i)
        elif 3 <= cnt[i]:
            nice2.append(i)

    if len(nice) % 2 and not nice2:
        print("NO")
        exit()

    ans = ["A"] * n
    for i in range(len(nice)//2):
        flg[nice[i]] = 1

    if len(nice) % 2:
        for i in range(n):
            if s[i] == nice2[0]:
                ans[i] = "B"
                break

    for i in range(n):
        if flg[s[i]]:
            ans[i] = "B"

    print("YES")
    print("".join(ans))


if __name__ == '__main__':
    main()