//???????.?????s???????ASCII????????ASCII???????????? ?????s???????ASCII????????ASCII????????????????????????s???????????????????????????s???????ASCII??s???????ASCII??




int main()
{
	char s[1000];
	cin.getline(s,1000);
	int len;
	for (len=0;s[len]!='\0';len++);
	for (int i=0;i<len-1;i++)
		cout<<(char)(s[i]+s[i+1]);
	cout<<(char)(s[len-1]+s[0])<<endl;
	return 0;
}
