# coding: utf-8
from vector import vector
v1 = vector([3,1])
v2 = vector([3,-2])
v3 = vector([1,4,2])
print str(v1)
print str(v1 + v2)
print str(v1 - v2)
print str(v1 * 3)
print str(v1 * v2)
print abs(v1)
print str(v3)
print abs(v3)
print str(v1 * v3)
