n, m, l = map(int, input().split())
a = list(map(int, input().split()))

dp = set()
dp.add(l)
for i in range(n):
  ndp = set()
  for x in dp:
    ndp.add(x)
    ndp.add((x + a[i]) // 2)

  if m in ndp:
    print("Yes")
    exit()

  dp = ndp

print("No")