Algoritmo # 2

SUMA PRAM CREW

#Moreno Fonseca Luis Felipe

import threading

import math

# Hilo

def hilo(i,j):

    a[j]=a[j]+a[j-pow(2,i-1)]

    print a

#Principal

    

print '\t\t--------- SUMA CREW --------'

a=[]

x=int(raw_input("Define el Tamaño del Vector -> "))

i=1

while (i<=x):

    n=int(raw_input("Ingresa Valor -> "))

    a.append(n)

    print a

    i+=1

n1=len(a)

lg=int(math.log(n1))

for i in range(1,lg): 

    for j in range((pow(2,i-1)+1),n1):

        h = threading.Thread(target=hilo,args=(i,j))

        h.start()

        h.join()

        print i,j

print a