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: Wrong Answer)

using System;
using System.Linq;

namespace ProblemF
{
    class Program
    {
        static void Main(string[] args)
        {
            var buff = Console.ReadLine().Split().Select(int.Parse).ToArray();
            int N = buff[0];
            int A = buff[1];
            int B = buff[2];
            int C = buff[3];
            var s = new string[N];
            for(int i = 0; i < N; i++)
            {
                s[i] = Console.ReadLine();
            }

            var ans = new string[N];

            for(int i = 0; i < N; i++)
            {
                switch(s[i])
                {
                    case "AB":
                        if(A <= B)
                        {
                            if (A == B && B == 1 && C == 0)
                            {
                                for(int j = i + 1; j < N; j++)
                                {
                                    if(s[j] == "BC")
                                    {
                                        ans[i] = "B";
                                        A--;
                                        B++;
                                        goto ENDLOOP;
                                    }
                                }
                            }
                            ans[i] = "A";
                            A++;
                            B--;
                        }
                        else
                        {
                            ans[i] = "B";
                            A--;
                            B++;
                        }
                        break;
                    case "AC":
                        if (A <= C)
                        {
                            if (A == C && C == 1 && B == 0)
                            {
                                for (int j = i + 1; j < N; j++)
                                {
                                    if (s[j] == "BC")
                                    {
                                        ans[i] = "C";
                                        A--;
                                        C++;
                                        goto ENDLOOP;
                                    }
                                }
                            }
                            ans[i] = "A";
                            A++;
                            C--;
                        }
                        else
                        {
                            ans[i] = "C";
                            A--;
                            C++;
                        }
                        break;
                    case "BC":
                        if (C <= B)
                        {
                            if (B == C && C == 1 && A == 0)
                            {
                                for (int j = i + 1; j < N; j++)
                                {
                                    if (s[j] == "AB")
                                    {
                                        ans[i] = "B";
                                        C--;
                                        B++;
                                        goto ENDLOOP;
                                    }
                                }
                            }
                            ans[i] = "C";
                            C++;
                            B--;
                        }
                        else
                        {
                            ans[i] = "B";
                            C--;
                            B++;
                        }
                        break;
                }
            ENDLOOP:;
                if(A < 0 || B < 0 || C < 0)
                {
                    Console.WriteLine("No");
                    return;
                }
            }
            Console.WriteLine("Yes");
            foreach(var str in ans)
            {
                Console.WriteLine(str);
            }
        }
    }
}