#include <iostream>

using namespace std;

int main()
{
	int x;

	cout << "Enter an integer = ";
	cin >> x;

	if (x % 3 == 0)
	{
		if (x % 2 == 0)
			cout << x + 1;
		else
			cout << x + 2;
	}
	else if (x % 3 == 1)
	{
		if (x % 2 == 0)
			cout << x + 3;
		else
			cout << x + 4;
	}
	else
	{
		if (x % 2 == 0)
			cout << x + 5;
		else
			cout << x + 6;
	}

	cout << endl;

	return 0;
}