#include <iostream>
#include <string>
using namespace std;
using std::string;



int main()
{
	string str("AbZal NUrgAzy");
	
	
	for (auto n : str)
	{
		if (isupper(n))
			cout << (char)(tolower(n));
		else
			cout << (char)(toupper(n));
	}
	cout << endl;
	return 0;
}