# Copyright 2010-2017 Google
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Simple solve."""

from __future__ import absolute_import
from __future__ import division
from __future__ import print_function

from ortools.sat.python import cp_model


def SimpleSolve():
  """Minimal CP-SAT example to showcase calling the solver."""
  # Creates the model.
  model = cp_model.CpModel()
  # Creates the variables.
  num_vals = 3
  x = model.NewIntVar(0, num_vals - 1, 'x')
  y = model.NewIntVar(0, num_vals - 1, 'y')
  z = model.NewIntVar(0, num_vals - 1, 'z')
  # Creates the constraints.
  model.Add(x != y)

  # Creates a solver and solves the model.
  solver = cp_model.CpSolver()
  status = solver.Solve(model)

  if status == cp_model.FEASIBLE:
    print('x = %i' % solver.Value(x))
    print('y = %i' % solver.Value(y))
    print('z = %i' % solver.Value(z))


SimpleSolve()