use quotient for num_ways

Co-authored-by: Leo Kim <[email protected]>

Author: sean424

climbing-stairs/bhyun-kim.py

@@ -34,6 +34,6 @@ def climbStairs(self, n: int) -> int:
         output = 0
 
         for i in range(n // 2 + 1):
-            num_ways = factorials[n - i] / factorials[n - (i * 2)] / factorials[i]
+            num_ways = factorials[n - i] // factorials[n - (i * 2)] // factorials[i]
             output += num_ways
         return int(output)