N,M,L = map(int,input().split())
A = list(map(int,input().split()))
C = 1000
dp = [0] * (C + 1)
dp[L] = 1
for a in A:
    for i in range(C + 1):
        if dp[i] == 1:
            dp[(i + a) // 2] = 1
if dp[M]:
    print('Yes')
else:
    print('No')