1518

Author: ramtanniru

Jul-7-24.py

@@ -0,0 +1,10 @@
+class Solution:
+    def numWaterBottles(self, numBottles: int, numExchange: int) -> int:
+        def rec(dr=0,c=0,b=numBottles):
+            if b+c<numExchange:
+                return dr+b
+            dr += b
+            x = (b+c)//numExchange
+            c = (b+c)%numExchange
+            return rec(dr,c,x)
+        return rec()