list0 = input().split(".")
list1 = input().split(".")

ver0 = int(list0[0] + list0[1] + list0[2])
ver1 = int(list1[0] + list1[1] + list1[2])

if int(list0[0]) >= int(list1[0]) and \
   int(list0[1]) >= int(list1[1]) and \
   int(list0[2]) >= int(list1[2]):
    print("YES")
else:
    print("NO")