N,X,Y = map(int, input().split())
R = list(map(int, input().split())) 
if N==1:
    if (X**2+Y**2)**0.5==R[0]:
        print('Yes')
    else:
        print('No')
else:
    if (X**2+Y**2)**0.5<=sum(R)*2-min(R):
        print('Yes')
    else:
        print('No')