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 Java (OpenJDK 11.0.6) (judge verdict: Wrong Answer)

//--- pF ---//
import java.util.*;
import java.lang.*;
import java.io.*;
public class Main {
	public static void main (String[] args) throws java.lang.Exception {
		new Solution();
	}
}
class Solution {
	Reader reader;
	PrintWriter out;
	public Solution() {
		reader = new Reader();
		out = new PrintWriter(System.out);
		while (reader.hasNext()) {
			run_case();
		}
		out.flush();
	}

	int[] mem;
	int[] sel;
	private void run_case() {
		int n = reader.ni();

		int ab = 0, bc = 0, ac = 0;
		int a = reader.ni();
		int b = reader.ni();
		int c = reader.ni();

		mem = new int[3]; // ab ac bc; 1 -> a ..
		sel = new int[3];

		List<String> list_q = new ArrayList<>();

		for (int i=0; i<n; i++) {
			String s = reader.ns();
			list_q.add(s);
			if (s.equals("AB")) {
				ab++;
			} else if (s.equals("BC")) {
				bc++;
			} else {
				ac++;
			}
		}

		ab%=2; bc%=2; ac%=2;

		boolean ok = dfs(a, b, c, ab, ac, bc);

		int ab_dir = 0, bc_dir = 0, ac_dir = 0;
		if (ok) {
			out.println("Yes");
			for (String q : list_q) {
				if (q.equals("AB")) {
					if (ab == 0) {
						if (ab_dir == 0) {
							out.println("A");
						} else {
							out.println("B");
						}
						ab_dir ^= 1;
					} else {
						if (sel[0] == 1) {
							out.println("A");
						} else {
							out.println("B");
						}
						ab --;
					}
				} else if (q.equals("AC")) {
					if (ac == 0) {
						if (ac_dir == 0) {
							out.println("A");
						} else {
							out.println("C");
						}
						ac_dir ^= 1;
					} else {
						if (sel[1] == 1) {
							out.println("A");
						} else {
							out.println("C");
						}
						ac --;
					}
				} else if (q.equals("BC")) {
					if (bc == 0) {
						if (bc_dir == 0) {
							out.println("C");
						} else {
							out.println("B");
						}
						bc_dir ^= 1;
					} else {
						if (sel[2] == 2) {
							out.println("B");
						} else {
							out.println("C");
						}
						bc --;
					}
				}
			}
		} else {
			out.println("No");
		}

		return;
	}

	private boolean dfs(int a, int b, int c, int ab, int ac, int bc) {
		if (ab == 0 && bc ==0 && ac == 0) {
			if (a>=0&&b>=0&&c>=0) {
				for (int i=0; i<3; i++) sel[i] = mem[i];
				return true;
			}
			return false;
		}
		boolean res = false;
		if (ab > 0) {
			mem[0] = 1;
			res |= dfs(a+1, b-1, c, ab-1, ac, bc);
			mem[0] = 2;
			res |= dfs(a-1, b+1, c, ab-1, ac, bc);
			mem[0] = 0;
		}
		if (ac > 0) {
			mem[1] = 1;
			res |= dfs(a+1, b, c-1, ab, ac-1, bc);
			mem[1] = 3;
			res |= dfs(a-1, b, c+1, ab, ac-1, bc);
			mem[1] = 0;
		}
		if (bc > 0) {
			mem[2] = 2;
			res |= dfs(a, b+1, c-1, ab, ac, bc-1);
			mem[2] = 3;
			res |= dfs(a, b-1, c+1, ab, ac, bc-1);
			mem[2] = 0;
		}
		return res;
	}
}

// 8 6 9 1
// BC
// AB

class Reader {
	BufferedReader br;
	StringTokenizer st;
	public Reader(){
		try {
			br = new BufferedReader(new InputStreamReader(System.in));
			st = new StringTokenizer(br.readLine());
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	public String next() {
		if (st.hasMoreTokens()) return st.nextToken();
		try {
			st = new StringTokenizer(br.readLine());
		} catch (Exception e) {
			e.printStackTrace();
		}
		return st.nextToken();
	}
	public boolean hasNext() {
		try {
			if (!st.hasMoreTokens() && !br.ready()) return false;
			else return true;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return false;
	}
	public int ni() {return Integer.parseInt(this.next());}
	public long nl() {return Long.parseLong(this.next());}
	public String ns() {return this.next();}
}