# -*- coding:utf-8 -*- class Solution: stack1=[] stack2=[] def push(self, node): # write code here self.stack1.append(node) if len(self.stack2)==0: self.stack2.append(node) else: if node>self.min(): self.stack2.append(self.min()) else: self.stack2.append(node) def pop(self): # write code here sel...