def solve(N,X,Y,R):
    dist=X*X+Y*Y
    if N==1:
        return dist==R[0]**2
    else:
        return dist<=(2*sum(R)-min(R))**2

N,X,Y=map(int,input().split())
R=list(map(int,input().split()))
print("Yes" if solve(N,X,Y,R) else "No")