#include <iostream>
using namespace std;
const int Max=100;

template <class T>
class BothStack
{
	public:
		BothStack(){top1=-1;top2=Max;}
		~BothStack(){}
		void Push(int i,T x);
		void Pop(int i);
	private:
		T data[Max];
		int top1,top2;
};


template <class T>
void BothStack<T>::Push(int i,T x)
{
	if(top1==top2-1)throw"上溢";
	if(i==1){data[++top1]=x;	cout<<data[top1]<<endl;}
	if(i==2){data[--top2]=x;	cout<<data[top2]<<endl;}
}


template <class T>
void BothStack<T>::Pop(int i)
{
	if(i==1)
	{
		if(top1==-1)throw"下溢";
		cout<<data[top1--]<<endl;

	}

		if(i==2)
	{
		if(top2==Max)throw"下溢";
		cout<<data[top2++]<<endl;

	}
}


int main()
{
	BothStack<int> one;
	cout<<"-----------top1入栈-------------"<<endl;
	one.Push(1,80);
	one.Push(1,85);
	cout<<"-----------top2入栈-------------"<<endl;
	one.Push(2,90);
	one.Push(2,95);
	cout<<"-----------top1出栈-------------"<<endl;
	one.Pop(1);
	one.Pop(1);
	cout<<"-----------top2出栈-------------"<<endl;
	one.Pop(2);
	one.Pop(2);
	return 0;
}