n, k = map(int, input().split())
a = [int(input()) for _ in range(n)]

gaps = []

# Handle the first gap
prev = 0
for num in a:
    gap_length = num - prev - 1
    if gap_length > 0:
        gaps.append(gap_length)
    prev = num

# Handle the last gap
gap_last = k - prev
if gap_last > 0:
    gaps.append(gap_last)

xor_sum = 0
for l in gaps:
    mod = l % 4
    if mod == 0 or mod == 1:
        xor_sum ^= 1
    else:
        xor_sum ^= 0

print("Yes" if xor_sum != 0 else "No")