###########################################################
#                                                         #
#    Construct a BDD and a ROBDD for a given threshold    #
#    system and evaluate its reliability                  #
#                                                         #
###########################################################

from c_bdd import BDDSystem
from c_robdd import ROBDDSystem
from c_threshold import BDDThreshold, ROBDDThreshold

# Component reliabilities            
p = 0.5

# Component weights
a = [8, 7, 6, 5, 3, 2]

# Threshold
b = 20

# Number of components
n = len(a)


# Sum of weights
wsum = 0
for wg in a:
    wsum += wg
    
sys = BDDSystem(BDDThreshold(a, wsum, b))

result = sys.calculateReliability0(p)
sys.printSystem()

print("")
print("---------------")
print("BDD-method:")
print("---------------")
print("System unreliability = ", result[0])
print("System reliability = ", result[1])

print("")
print("------------------------")
print("")
    
sys = ROBDDSystem(ROBDDThreshold(a, wsum, b))

result = sys.calculateReliability0(p)
sys.printSystem()

print("")
print("---------------")
print("ROBDD-method:")
print("---------------")
print("System unreliability = ", result[0])
print("System reliability = ", result[1])