import math


N,X,Y = map(float, input().split())
R = list(map(float, input().split()))
n = int(N)
Rn = [2*R[i] for i in range(n)]
Rn[0] = R[0]
if sum(Rn) >= math.sqrt(X*X+Y*Y):
    print('Yes')
else:
    print('No')