using namespace std;

int encode(char*, char*);

int main()
{
	char str[1000];
	cin.getline(str, 999);
	char* res = new char[strlen(str)+1];
	encode(str, res);

	cout << res << endl;


	if (res != nullptr)
	{
		delete[] res;
		res = nullptr;
	}
}

int encode(char * src, char * res)
{
	char * ptr = src;
	unsigned i = 0;
	while (*ptr != '\0') {
		if ((*ptr >= 'A' && *ptr <= 'Z') || (*ptr >= 'a' && *ptr <= 'z'))
		{
			if ((*ptr >= 'A' && *ptr < 'X') || (*ptr >= 'a' && *ptr < 'x'))
			{
				res[i++] = *ptr + 3;
			}
			else {
				res[i++] = *ptr - 23;
			}
		}
		else  {
			res[i++] = *ptr;
		}
		ptr++;
	}
	res[i] = '\0';
	return 0;
}