Three people, A, B and C, are trying to communicate using transceivers. They are standing along a number line, and the coordinates of A, B and C are a, b and c (in meters), respectively. Two people can directly communicate when the distance between them is at most d meters. Determine if A and C can communicate, either directly or indirectly. Here, A and C can indirectly communicate when A and B can directly communicate and also B and C can directly communicate.
a,b,c,d = map(int,input().split())
if abs(a-b) <= d and abs(b-c) <= d and abs(a-c) <= d:
        print("Yes")
else:
        print("No")

a,b,c,d = map(int,input().split())
if abs(a-c) <= d or (abs(a-b) <= d and abs(b-c) <= d):
        print("Yes")
else:
        print("No")