n,m,l=map(int,input().split())
a=[*map(int,input().split())]
dp=[[0]*1001 for i in range(n+1)]
dp[0][l]=1
for i in range(1,n+1):
    for j in range(1001):
        if dp[i-1][j]==1:
            dp[i][(j+a[i-1])//2]=1
            dp[i][j]=1
print("YNeos"[not dp[-1][m]::2])