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.Linq;
using System.Collections.Generic;
using static System.Console;
using System.Text;
using System.IO;
using static System.Math;
using System.Numerics;

namespace AtCoder
{
    public class Program
    {
        public static void Main(string[] args)
        {
            SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false });
            Solve();
            Out.Flush();
            Read();
        }

        static void Solve()
        {
            var NABC = Sarray();
            var N = NABC[0];
            var ABC = new long[] { NABC[1], NABC[2], NABC[3] };
            var Si = new string[N];
            for (var i = 0; i < N; ++i)
                Si[i] = ReadLine();
            var dct = new Dictionary<char, long>() { { 'A', 0 }, { 'B', 1 }, { 'C', 2 } };
            var sel = new char[N];
            for (var i = 0; i < N; ++i)
            {
                var s = Si[i];
                var tg1 = dct[s[0]];
                var tg2 = dct[s[1]];
                if (ABC[tg1] == 1 && ABC[tg2] == 1 && i < N - 1 && s != Si[i + 1])
                {
                    if (s[0] == Si[i + 1][0] || s[0] == Si[i + 1][1])
                    {
                        sel[i] = s[0];
                        ++ABC[tg1]; --ABC[tg2];
                    }
                    else
                    {
                        sel[i] = s[1];
                        --ABC[tg1]; ++ABC[tg2];
                    }
                }
                else
                {
                    if (ABC[tg1] < ABC[tg2])
                    {
                        sel[i] = s[0];
                        ++ABC[tg1]; --ABC[tg2];
                    }
                    else
                    {
                        sel[i] = s[1];
                        --ABC[tg1]; ++ABC[tg2];
                    }
                }
                if(ABC.Any(a=>a<0))
                {
                    WriteLine("No");
                    return;
                }
            }
            WriteLine("Yes");
            foreach (var s in sel)
                WriteLine(s);
        }

        static long Mod = (long)1e9 + 7;
        static public long[] Sarray() { return ReadLine().Split().Select(long.Parse).ToArray(); }
        static public List<long> Slist() { return ReadLine().Split().Select(long.Parse).ToList(); }
        static public (T1 a, T2 b) Slice<T1, T2>()
        {
            var t = ReadLine().Split();
            return (
            (T1)Convert.ChangeType(t[0], typeof(T1)),
            (T2)Convert.ChangeType(t[1], typeof(T2)));
        }
        static public (T a, T b) Slice2<T>()
        {
            var t = ReadLine().Split();
            return (
            (T)Convert.ChangeType(t[0], typeof(T)),
            (T)Convert.ChangeType(t[1], typeof(T)));
        }
        static public (T a, T b, T c) Slice3<T>()
        {
            var t = ReadLine().Split();
            return (
            (T)Convert.ChangeType(t[0], typeof(T)),
            (T)Convert.ChangeType(t[1], typeof(T)),
            (T)Convert.ChangeType(t[2], typeof(T)));
        }
    }
}