<b_jonas> learn norm is the name of the functions in the Eigen and opencv libraries to compute the 2-norm of a vector, and the name of the function in C++ to compute the squared 2-norm of a complex number

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