feat(work): implement Gas Station solution and adjust formatting

work/1/Medium/Array/134.gas-station.py

@@ -54,15 +54,27 @@ you start.
 
 Constraints:
 
-	• n == gas.length == cost.length
+        • n == gas.length == cost.length
 
-	• 1 <= n <= 10^5
+        • 1 <= n <= 10^5
 
-	• 0 <= gas[i], cost[i] <= 10^4
+        • 0 <= gas[i], cost[i] <= 10^4
 
-	• The input is generated such that the answer is unique.
+        • The input is generated such that the answer is unique.
 """
 
+
 class Solution:
     def canCompleteCircuit(self, gas: list[int], cost: list[int]) -> int:
+        start, tank, total = 0, 0, 0
 
+        for i in range(len(gas)):
+            drive = gas[i] - cost[i]
+            tank = tank + drive
+
+            if tank < 0:
+                tank = 0
+                start = i + 1
+            total = total + drive
+
+        return start if total >= 0 else -1