/* ???: ???????.cpp
 * ??? 1200012826 ??
 * ???2012?12?9?
 */
int main()
{
	char a[102];
	cin.getline(a, 102, '\n');
	char *p=a;
	while(*p != '\0')
	{
		if(*(p+1) == '\0')
		{
			cout << (char)(*p + a[0]);
		}
		else
		{
			cout << (char)(*p + *(p+1));
		}
		p++;
	}
	return 0;
} 