Update README.md

Author: Yashwanth137

solution/2700-2799/2751.Robot Collisions/README.md

@@ -90,7 +90,30 @@ tags:
 #### Python3
 
 ```python
-
+class Solution:
+    def survivedRobotsHealths(self, positions: List[int], healths: List[int], directions: str) -> List[int]:
+        temp = {x: i for i,x in enumerate(positions)}
+
+        stack = []
+        for x in sorted(positions):
+            i = temp[x]
+
+            if directions[i] == "R":
+                stack.append(i)
+            else:
+                while stack and healths[i]:
+                    j = stack.pop()
+                    if healths[i] > healths[j]:
+                        healths[j] = 0
+                        healths[i] -= 1
+                    elif healths[i] < healths[j]:
+                        healths[i] = 0
+                        healths[j] -= 1
+                        stack.append(j)
+                    else:
+                        healths[i] = healths[j] = 0
+                        
+        return [item for item in healths if item > 0]
 ```
 
 #### Java