You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
957 B
Python
31 lines
957 B
Python
#!/usr/bin/python
|
|
#
|
|
# 100 coins must sum to $5.00
|
|
#
|
|
# That's kind of a country-specific problem, since depending on the
|
|
# country there are different values for coins. Here is presented
|
|
# the solution for a given set.
|
|
#
|
|
from constraint import *
|
|
import sys
|
|
|
|
def main():
|
|
problem = Problem()
|
|
total = 5.00
|
|
variables = ("0.01", "0.05", "0.10", "0.50", "1.00")
|
|
values = [float(x) for x in variables]
|
|
for variable, value in zip(variables, values):
|
|
problem.addVariable(variable, range(int(total/value)))
|
|
problem.addConstraint(ExactSumConstraint(total, values), variables)
|
|
problem.addConstraint(ExactSumConstraint(100))
|
|
solutions = problem.getSolutionIter()
|
|
for i, solution in enumerate(solutions):
|
|
sys.stdout.write("%03d -> " % (i+1))
|
|
for variable in variables:
|
|
sys.stdout.write("%s:%d " % (variable, solution[variable]))
|
|
sys.stdout.write("\n")
|
|
|
|
if __name__ == "__main__":
|
|
main()
|
|
|