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 Go (1.14.1) (judge verdict: Accepted)

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

var sc, wr = bufio.NewScanner(os.Stdin), bufio.NewWriter(os.Stdout)

func scanString() string   { sc.Scan(); return sc.Text() }
func scanRunes() []rune    { return []rune(scanString()) }
func scanInt() int         { a, _ := strconv.Atoi(scanString()); return a }
func scanInt64() int64     { a, _ := strconv.ParseInt(scanString(), 10, 64); return a }
func scanFloat64() float64 { a, _ := strconv.ParseFloat(scanString(), 64); return a }

func scanInts(n int) []int {
	res := make([]int, n)
	for i := 0; i < n; i++ {
		res[i] = scanInt()
	}
	return res
}

func debug(a ...interface{}) { fmt.Fprintln(os.Stderr, a...) }

func abs(a int) int {
	if a < 0 {
		return -a
	}
	return a
}
func min(a, b int) int {
	if a < b {
		return a
	}
	return b
}
func max(a, b int) int {
	if a > b {
		return a
	}
	return b
}

//•*¨*•.¸¸♪main•*¨*•.¸¸♪(　-ω-)ノ　(　・ω・)
func main() {
	defer wr.Flush()
	sc.Split(bufio.ScanWords)
	sc.Buffer(make([]byte, 10000), 1001001)

	n, a, b, c := scanInt(), scanInt(), scanInt(), scanInt()

	s := make([]string, n)
	for i := 0; i < n; i++ {
		s[i] = scanString()
	}

	ans := make([]string, n)
	for i := 0; i < n; i++ {
		switch s[i] {
		case "AB":
			if a > b {
				a--
				b++
				ans[i] = "B"
			} else if b > a {
				a++
				b--
				ans[i] = "A"
			} else {
				if i+1 == n || s[i+1] == "AB" || s[i+1] == "AC" {
					a++
					b--
					ans[i] = "A"
				} else {
					a--
					b++
					ans[i] = "B"
				}
			}
		case "BC":
			if b > c {
				b--
				c++
				ans[i] = "C"
			} else if c > b {
				b++
				c--
				ans[i] = "B"
			} else {
				if i+1 == n || s[i+1] == "BC" || s[i+1] == "AB" {
					b++
					c--
					ans[i] = "B"
				} else {
					b--
					c++
					ans[i] = "C"
				}
			}
		case "AC":
			if a > c {
				a--
				c++
				ans[i] = "C"
			} else if c > a {
				a++
				c--
				ans[i] = "A"
			} else {
				if i+1 == n || s[i+1] == "AC" || s[i+1] == "AB" {
					a++
					c--
					ans[i] = "A"
				} else {
					a--
					c++
					ans[i] = "C"
				}
			}
		}
		if a < 0 || b < 0 || c < 0 {
			fmt.Fprintln(wr, "No")
			return
		}
	}

	fmt.Fprintln(wr, "Yes")
	for i := 0; i < n; i++ {
		fmt.Fprintln(wr, ans[i])
	}
}