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 Python (3.8.2) (judge verdict: Accepted)

n, a, b, c = map(int, input().split())

v = {
  'A': a,
  'B': b,
  'C': c
}
ss = []
for _ in range(n):
  ss.append(input())

history = [] 
flag = True
  
for i in range(n):
  
  s = ss[i]
  
  if v[s[0]] == 0 and v[s[1]] == 0:
    flag = False
    break
  elif v[s[0]] > v[s[1]]:
    history.append(s[1])
    v[s[0]] -= 1
    v[s[1]] += 1
  elif v[s[0]] < v[s[1]]:
    history.append(s[0])
    v[s[0]] += 1
    v[s[1]] -= 1
  elif i == n-1:
    history.append(s[0])
    v[s[0]] += 1
    v[s[1]] -= 1
  elif s[0] in ss[i+1]:
    history.append(s[0])
    v[s[0]] += 1
    v[s[1]] -= 1
  else:
    history.append(s[1])
    v[s[0]] -= 1
    v[s[1]] += 1
if flag:
  print("Yes")
  print('\n'.join(history))
else:
  print("No")