// sample program to understand namespacee
using namespace std;

#include <iostream>
namespace myspace0{
	int n = 1001;
}
namespace myspace1{
	int m = 1002;
}

int main()
{
 	myspace0::n = 2001;
	cout << "testing namespace" << endl;
	cout << "myspace1::m=" << myspace1::m << endl;
	using namespace myspace1;
	using namespace myspace0;
	cout << "myspace0::n=" << n << endl;
	cout << "myspace1::m=" << m << endl;
	return 0;
}