thomasahle

import collections
from ortools.linear_solver import pywraplp

# xy format
tetras = [
        # Up downs
        ((0,0),(0,1),(1,1),(1,2)),
        ((0,0),(0,1),(-1,1),(-1,2)),
        # left rights
        ((0,0),(1,0),(1,-1),(2,-1)),