add the solution 0789

Author: Mrtj2016

solution/0789.Escape The Ghosts/README.md

@@ -0,0 +1,13 @@
+class Solution:
+    def escapeGhosts(self, ghosts, target):
+        """
+        :type ghosts: List[List[int]]
+        :type target: List[int]
+        :rtype: bool
+        """
+        flag=abs(target[0])+abs(target[1])
+        for i in ghosts:
+            if abs(i[0]-target[0])+abs(i[1]-target[1])<=flag:
+                return False
+        else:
+            return True