n,m,l=map(int,input().split())
s=list(map(int,input().split()))
dp=[[False]*1010 for i in range(n+1)]
dp[0][l]=True
for i in range(1,n+1):
    for j in range(1010):
        dp[i][j]|=dp[i-1][j]
        if dp[i-1][j]:dp[i][(j+s[i-1])//2]=True
if dp[n][m]:print("Yes")
else:print("No")