#include <iostream>

using namespace std;

class Int {

private:

int value;

public:

Int():value(0) {

}

Int(int num):value(num) {

}

operator int() {return value;}

Int operator+(Int n2);

Int operator-(Int n2);

Int operator*(Int n2);

Int operator/(Int n2);

void display();

Int check(long double result);

};

void Int::display() {

cout << value;

}

Int Int::check(long double result) {

if (result > 2147483647.0L || result < -2147483647.0L) {

cout << "Ошибка!";

exit(1);

}

return Int(int(result));

}

Int Int::operator+(Int n2) {

return check(static_cast<long double>(value) + n2.value);

}

Int Int::operator-(Int n2) {

return check(static_cast<long double>(value) - n2.value);

}

Int Int::operator*(Int n2) {

return check(static_cast<long double>(value) * n2.value);

}

Int Int::operator/(Int n2) {

return check(static_cast<long double>(value) / n2.value);

}

int main() {

Int n1(30);

Int n2(5);

Int n3;

cout << "n1 = ";

n1.display();

cout << endl;

cout << "n2 = ";

n2.display();

cout << endl;

n3 = n1 + n2;

cout << "n1 + n2 = ";

n3.display();

cout << endl;

n3 = n1 - n2;

cout << "n1 - n2 = ";

n3.display();

cout << endl;

n3 = n1 * n2;

cout << "n1 * n2 = ";

n3.display();

cout << endl;

n3 = n1 / n2;

cout << "n1 / n2 = ";

n3.display();

cout << endl;

return 0;

}