#include <iostream>
using namespace std;

class Expr {
public:
	virtual void to_bytecode() = 0;
};

class Inte : public Expr {
	int value;
public:
	Inte(int _value){ value = _value; }
	void to_bytecode(){
		cout << "push_int " << value << endl;
	}
};

class Real : public Expr {
	double value;
public:
	Real(double _value){ value = _value; }
	void to_bytecode(){
		cout << "push_double " << value << endl;
	}
};

enum OperKind {ADD, SUB, MUL, DIV, MOD};

class Oper : public Expr {
	OperKind kind;
public:
	Expr* left;
	Expr* right;
	Oper(OperKind _kind){ kind = _kind; }
	void to_bytecode(){
		left->to_bytecode();
		right->to_bytecode();
		switch(kind){
		case ADD:
			cout << "add" << endl;
			break;
		case SUB:
			cout << "sub" << endl;
			break;
		case MUL:
			cout << "mul" << endl;
			break;
		case DIV:
			cout << "div" << endl;
			break;
		case MOD:
			cout << "mod" << endl;
			break;
		}
	}
};