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.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;

class Program

{
    public Program() { }
    public static int Main()
    {
        cin = new Scanner();
        new Program().calc();
        return 0;
    }
    static Scanner cin;

    void calc()
    {
        long N,A,B,C;

        N = cin.nextLong();
        A = cin.nextLong();
        B = cin.nextLong();
        C = cin.nextLong();
        string[] s = new string[N];
        StringBuilder output = new StringBuilder();
        for(var i = 0; i < N; i++)
        {
            s[i] = cin.next();
            //Console.WriteLine("input: " + s[i]);
            switch (s[i])
            {
                case "AB":
                    {
                        if (A == 0 && B == 0)
                        {
                            Console.WriteLine("No");
                            return;
                        }

                        if (A == 0)
                        {
                            B--;
                            A++;
                            output.Append("A\n");break;
                        }
                        if (B == 0)
                        {
                            B++;
                            A--;
                            output.Append("B\n"); break;
                        }
                        A++;
                        B--;
                        output.Append("A\n");
                        break;
                    }
                case "AC":
                    {
                        if (A == 0 && C == 0)
                        {
                            Console.WriteLine("No");
                            return;
                        }

                        if (A == 0)
                        {
                            C--;
                            A++;
                            output.Append("A\n"); break;
                        }
                        if (C == 0)
                        {
                            C++;
                            A--;
                            output.Append("C\n"); break;
                        }
                        A++;
                        C--;
                        output.Append("A\n");
                        break;
                    }
                case "BC":
                    {
                        if (C == 0 && B == 0)
                        {
                            Console.WriteLine("No");
                            return;
                        }

                        if (C == 0)
                        {
                            B--;
                            C++;
                            output.Append("C\n"); break;
                        }
                        if (B == 0)
                        {
                            B++;
                            C--;
                            output.Append("B\n"); break;
                        }
                        C++;
                        B--;
                        output.Append("C\n");
                        break;
                    }
            }
        }

        Console.WriteLine("Yes");
        Console.WriteLine(output.ToString());

    }



}


class Scanner
{
    string[] s;
    int i;

    char[] cs = new char[] { ' ' };

    public Scanner()
    {
        s = new string[0];
        i = 0;
    }

    public string next()
    {
        if (i < s.Length) return s[i++];
        string st = Console.ReadLine();
        while (st == "") st = Console.ReadLine();
        s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
        if (s.Length == 0) return next();
        i = 0;
        return s[i++];
    }

    public int nextInt()
    {
        return int.Parse(next());
    }
    public int[] ArrayInt(int N, int add = 0)
    {
        int[] Array = new int[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextInt() + add;
        }
        return Array;
    }

    public long nextLong()
    {
        return long.Parse(next());
    }

    public long[] ArrayLong(int N, long add = 0)
    {
        long[] Array = new long[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextLong() + add;
        }
        return Array;
    }

    public double nextDouble()
    {
        return double.Parse(next());
    }


    public double[] ArrayDouble(int N, double add = 0)
    {
        double[] Array = new double[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextDouble() + add;
        }
        return Array;
    }
}


class XRand
{
    uint x, y, z, w;


    public XRand()
    {
        init();
    }

    public XRand(uint s)
    {
        init();
        init_xor128(s);
    }

    void init()
    {
        x = 314159265; y = 358979323; z = 846264338; w = 327950288;

    }

    public void init_xor128(uint s)
    {
        z ^= s;
        z ^= z >> 21; z ^= z << 35; z ^= z >> 4;
        z *= 736338717;
    }

    uint next()
    {
        uint t = x ^ x << 11; x = y; y = z; z = w; return w = w ^ w >> 19 ^ t ^ t >> 8;
    }

    public long nextLong(long m)
    {
        return (long)((((ulong)next() << 32) + next()) % (ulong)m);
    }

    public int nextInt(int m)
    {
        return (int)(next() % m);
    }

    public int nextIntP(int a)
    {
        return (int)Math.Pow(a, nextDouble());
    }

    public int nextInt(int min, int max)
    {
        return min + nextInt(max - min + 1);
    }


    public double nextDouble()
    {
        return (double)next() / uint.MaxValue;
    }

    public double nextDoubleP(double a)
    {
        return Math.Pow(a, nextDouble());
    }
}