inf=10**18
dxy=[(0,1), (1,0), (-1, 0), (0, -1)]
mod=10**9+7
MOD=998244353
def main():
    N, X, Y = map(int, input().split())
    R=  [int(i) for i in input().split()]
    dis = (X**2+Y**2)**(1/2)
    if sum(R)*2>=dis: print("Yes")
    else: print("N0")
main()