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 CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int s[n];
  int f[101] = {};
  for (int i = 0; i < n; i++) {
    cin >> s[i];
    f[s[i]]++;
  }
  int c1 = 0, c2 = 0, c3 = 0;
  for (int i = 1; i <= 100; i++) {
    if (f[i] == 1)
      c1++;
    else if (f[i] == 2)
      c2++;
    else if (f[i] > 2)
      c3++;
  }
  string ch = "A";
  if ((c1 % 2) == 0) {
    cout << "YES\n";
    for (int i = 0; i < n; i++) {
      if (f[s[i]] == 1) {
        cout << ch;
        if (ch == "A")
          ch = "B";
        else
          ch = "A";
      } else
        cout << "A";
    }
  } else if (c3) {
    int z = 0;
    cout << "YES\n";
    for (int i = 0; i < n; i++) {
      if (f[s[i]] == 1) {
        cout << ch;
        if (ch == "A")
          ch = "B";
        else
          ch = "A";
      } else if (f[s[i]] > 2 && z == 0) {
        cout << "B";
        z = 1;
      } else
        cout << "A";
    }
  } else
    cout << "NO";
  return 0;
}