import sys
from collections import defaultdict

MOD = 998244353

def main():
    input = sys.stdin.read().split()
    idx = 0
    N = int(input[idx]); idx +=1
    K = int(input[idx]); idx +=1
    X = int(input[idx]); idx +=1
    Y = int(input[idx]); idx +=1
    A = list(map(int, input[idx:idx+K]))
    
    # Initial state: after first element
    # state is a dict where key is prev element, value is a dict of {xor_val: count}
    current = defaultdict(dict)
    for a in A:
        if a not in current:
            current[a] = defaultdict(int)
        current[a][a] = 1
    
    for _ in range(N - 1):
        next_state = defaultdict(lambda: defaultdict(int))
        for prev_val in current:
            for xor_val in current[prev_val]:
                cnt = current[prev_val][xor_val]
                for a in A:
                    if a == prev_val:
                        continue
                    new_xor = xor_val ^ a
                    next_state[a][new_xor] = (next_state[a][new_xor] + cnt) % MOD
        current = next_state
    
    total = 0
    for a in current:
        xor_dict = current[a]
        for x in range(X, Y + 1):
            if x in xor_dict:
                total = (total + xor_dict[x]) % MOD
    print(total % MOD)

if __name__ == "__main__":
    main()