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