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- class ExtendedStack(list):
- def sum(self):
- self.a = self.pop()
- self.b = self.pop()
- self.c = self.a + self.b
- self.append(self.c)
- def sub(self):
- self.a = self.pop()
- self.b = self.pop()
- self.c = self.a - self.b
- self.append(self.c)
- def mul(self):
- self.a = self.pop()
- self.b = self.pop()
- self.c = self.a * self.b
- self.append(self.c)
- def div(self):
- self.a = self.pop()
- self.b = self.pop()
- self.c = self.a // self.b
- self.append(self.c)
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