Problem:
Score : 600 points

Problem Statement

There is a game that involves three variables, denoted A, B, and C.

As the game progresses, there will be N events where you are asked to make a choice.
Each of these choices is represented by a string s_i. If s_i is AB, you must add 1 to A or B then subtract 1 from the other; if s_i is AC, you must add 1 to A or C then subtract 1 from the other; if s_i is BC, you must add 1 to B or C then subtract 1 from the other.

After each choice, none of A, B, and C should be negative.

Determine whether it is possible to make N choices under this condition. If it is possible, also give one such way to make the choices.

Constraints

1 \leq N \leq 10^5

0 \leq A,B,C \leq 10^9

N, A, B, C are integers.

s_i is AB, AC, or BC.

Input

Input is given from Standard Input in the following format:

N A B C
s_1
s_2
:
s_N

Output

If it is possible to make N choices under the condition, print Yes; otherwise, print No.

Also, in the former case, show one such way to make the choices in the subsequent N lines. The (i+1)-th line should contain the name of the variable (A, B, or C) to which you add 1 in the i-th choice.

Sample Input 1

2 1 3 0
AB
AC

Sample Output 1

Yes
A
C

You can successfully make two choices, as follows:

In the first choice, add 1 to A and subtract 1 from B. A becomes 2, and B becomes 2.

In the second choice, add 1 to C and subtract 1 from A. C becomes 1, and A becomes 1.

Sample Input 2

3 1 0 0
AB
BC
AB

Sample Output 2

No

Sample Input 3

1 0 9 0
AC

Sample Output 3

No

Sample Input 4

8 6 9 1
AC
BC
AB
BC
AC
BC
AB
AB

Sample Output 4

Yes
C
B
B
C
C
B
A
A

Solution in C# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;

namespace AtCoder
{
    class Abc166F
    {
        public static void Main()
        {
            var nabc = Console.ReadLine().Split(' ').Select(i => long.Parse(i)).ToArray();
            var n = nabc[0];
            var abc = new long[] { nabc[1], nabc[2], nabc[3] };
            var s = new char[n, 2];

            for (int i = 0; i < n; i++)
            {
                var xy = Console.ReadLine();
                s[i, 0] = xy[0];
                s[i, 1] = xy[1];
            }

            var ans = new char[n];
            for (int i = 0; i < n; i++)
            {
                var x = s[i, 0] - 'A';
                var y = s[i, 1] - 'A';
                bool selectX = false;
                if (abc[x] == abc[y])
                {
                    if (abc[x] == 0)
                    {
                        Console.WriteLine("No");
                        return;
                    }
                    else if (i < n - 1 &&
                        (s[i, 0] == s[i + 1, 0] || s[i, 0] == s[i + 1, 1]))
                        selectX = true;
                }
                else if (abc[x] < abc[y])
                    selectX = true;

                if (selectX)
                {
                    abc[x]++;
                    abc[y]--;
                    ans[i] = s[i, 0];
                }
                else
                {
                    abc[x]--;
                    abc[y]++;
                    ans[i] = s[i, 1];
                }
            }
            Console.WriteLine("Yes");
            foreach (var c in ans)
                Console.WriteLine(c);
        }
    }
}