import sys
input = sys.stdin.readline
H, W = map(int, input().split())
y, x = map(int, input().split())
u, v = map(int, input().split())

if abs(y - u) + abs(x - v) == 1:
  print("Yes")
  exit(0)

if (abs(y - u) + abs(x - v)) & 1:
  print("Yes")
  exit(0)
print("No")