#include<iostream>

using namespace std;

void isEmpty();
void push(int x);
void pop();
void top();

int stack[10];
int tos = -1;

int main(){
	isEmpty();
	push(1);
	push(2);
	top();
	pop();
	isEmpty();
	top();

	return 0;
}

void isEmpty(){
	if(tos == -1){
		cout << "Stack is empty"<<endl;
	}
	else{
		cout << "Stack is not empty"<<endl;
	}
}
void push(int x){
	if(tos == 9){
		cout << "Stack is full"<<endl;
		return;
	}
	tos++;
	stack[tos] = x;
}
void pop(){
	if(tos == -1){
		cout << "Stack is empty"<<endl;
		return;
	}
	tos--;
}
void top(){
	if(tos == -1){
		cout << "Stack is empty"<<endl;
		return;
	}
	cout << stack[tos]<<endl;
}