Python3 Solution
\n\nclass Solution:\n    def lemonadeChange(self, bills: List[int]) -> bool:\n        five=ten=0\n        for bill in bills:\n            if bill==5:\n         
\n```\nclass Solution:\n    def lemonadeChange(self, bills: List[int]) -> bool:\n        five=ten=0\n        for bill in bills:\n            if bill==5:\n                five+=1\n            elif bill==10:\n                five,ten=five-1,ten+1\n            elif ten>0:\n                five,ten=five-1,ten-1\n            else:\n                five-=3\n            if five<0:\n                return False\n        return True    \n```
['Python', 'Python3']