import numpy as np
import time

def main():
  
  print(" Program starts      ",end=" ")
  print(time.ctime(),end=" ")
  t1=time.time()
  print(t1)
  n  = 100000000

  x = np.empty([n],dtype=np.float64)
  t2=time.time()
  print(" Create empty array  ",end=" ")
  print(time.ctime(),end=" ")
  print(" {0:3.6f} ".format(t2-t1))
  t1=t2
  for i in range(0,n):
    x[i]=1.0

  t2=time.time()
  print(" Initalise the array ",end=" ")
  print(time.ctime(),end=" ")
  print(" {0:3.6f} ".format(t2-t1))
  t1=t2
  array_sum = sum(x)

  t2=time.time()
  print(" Sum       the array ",end=" ")
  print(time.ctime(),end=" ")
  print(" {0:3.6f} ".format(t2-t1))
  t1=t2
  print(" Sum = ",end=" ")
  print(array_sum)

  print(" Program ends        ",end=" ")
  print(time.ctime(),end=" ")
  t2=time.time()
  print(t2)

if ( __name__ == "__main__" ):
  main()