n, m, l = map(int, input().split())
a = list(map(int, input().split()))
dp = [[False]*(15) for i in range(n+2)]
dp[0][l] = True
for i in range(1, n+1):
    for j in range(15):
        dp[i][j] |= dp[i-1][j]
        if dp[i-1][j]:
            dp[i][(j+a[i-1])//2] = True
if dp[n-1][m]:
    print('Yes')
else:
    print("No")