Vanja and Miksi really like games. After playing one game for a long time, they decided to invent another game!
In this game, they have a sequence $A_1, A_2, \dots, A_N$ and two numbers $Z_1$ and $Z_2$. The rules of the game are as follows:
- The players take turns alternately, starting with Vanja.
- There is an integer $S$; at the beginning, $S = 0$.
- In each turn, the current player must choose an arbitrary element of $A$ and either add that number to $S$ or subtract it from $S$. Each element can be selected multiple times.
- Afterwards, if $S = Z_1$ or $S = Z_2$, the current player (the player who made $S$ equal to $Z_1$ or $Z_2$) is the winner of the game.
- If the game lasts for $10^{10}$ turns, Vanja and Miksi decide to declare it a tie.
Can you help the boys determine the winner of the game? Please note that the game can end in a tie (if nobody can make $S = Z_1$ or $S = Z_2$ in the first $10^{10}$ moves).
Both players play optimally, i.e. if there is a move which guarantees the current player's victory regardless of the other player's moves, the current player will make such a move. If the current player cannot win and there is a move which guarantees that the game will end in a tie, the current player will make such a move.

-----Input-----
- The first line of the input contains a single integer $T$ denoting the number of test cases. The description of $T$ test cases follows.
- The first line of each test case contains three space-separated integers $N$, $Z_1$ and $Z_2$.
- The second line contains $N$ space-separated integers $A_1, A_2, \dots, A_N$.

-----Output-----
- For each test case, print a single line containing one integer — the final result of the game:
- $1$ if Vanja (the first player) has a winning strategy
- $2$ if Miksi (the second player) has a winning strategy
- $0$ if the game ends in a tie

-----Constraints-----
- $1 \le T \le 50$
- $1 \le N \le 50$
- $|Z_1|, |Z_2| \le 10^9$
- $|A_i| \le 10^9$ for each valid $i$

-----Subtasks-----
Subtask #1 (25 points): $N = 2$
Subtask #2 (75 points): original constraints

-----Example Input-----
3
2 6 4
-4 10
1 1 -1
2
2 0 7
3 4

-----Example Output-----
1
0
2

-----Explanation-----
Example case 1: The first player can choose the value $A_1 = -4$, subtract it from $S = 0$ and obtain $S = - (-4) = 4 = Z_2$. The winner is the first player.  
Example case 2: It can be proven that neither player is able to reach $S = Z_1$ or $S = Z_2$. The result is a tie.

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

ns = {"__name__": "__main__"}
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = 'for i in range(int(input())):\n n, a, b = [int(c) for c in input().split()]\n impossible = 0\n arr = [abs(int(x)) for x in input().split()]\n\n if a in arr or -a in arr or b in arr or -b in arr:\n  print(1)\n  continue\n\n if a == 0 or b == 0:\n  print(2)\n  continue\n if a == -b:\n  for move1 in arr:\n   a_left = abs(a - move1)\n   b_left = abs(b - move1)\n   if a_left in arr or b_left in arr:\n    continue\n   else:\n    impossible = 1 \n    break\n  else:\n   print(2)\n   continue\n\n print(0)\n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

```

Measured memory_bytes: 13207