# -*- coding: utf-8 -*-

import graph_tool.all as gt
import numpy as np
#from pulp import LpProblem, LpVariable, LpMinimize, LpInteger

#prob = LpProblem("The Packing Coloring Problem",  LpMinimize)
#v_11 = LpVariable("v_11", 0, 1, LpInteger)
#prob +=

def is_valid_packing_coloring(g):
    
    return True