<Taneb> learn Go is a programming language invented by Google, a game invented in East Asia, and a common verb in the English language, invented by Germanic tribes. Taneb invented all three.

#!/usr/bin/env python
print (lambda s: "".join([(s[i].upper() if i%2==0 else s[i].lower()) for i in range(len(s)) ]))(open("/dev/stdin").read())