""" Write an efficient program to find the hexadecimal equivalent of a given series of octal numbers from m to n."""
import time
import sys
t0=time.clock()
def oc_to_deci(n):
    r1=repr(n)
    r2=len(r1)
    r3=r1[::-1]
    list=[]
    list=r3
    no=0
    r5=list[0]
    r6=int(r5)
    r7=list.index(r5)
    flag=0
    for i in range(1,r2):
            if r6>=8:
                flag=flag+1
            else:
                r5=list[i]
                r6=int(r5)
                
    if flag==0:
        for k in range(r2):
                r5=list[k]
                r6=int(r5)
                r7=list.index(r5)
                for j in range(r7):
                        r6=r6*8
                no=no+r6
    w=int(no)
    deci_to_hexa(w)
        
def deci_to_hexa(m):
  s=''
  h=m%16
  while m>=1:
      if h!=0:
          while m%16!=0:
                 t2=m%16
                 m=m/16
                 if t2<=9:
                      t3=repr(t2)
                      s=s+t3
    
                 else:
                      if t2==10:
                          s=s+'A'
                      elif t2==11:
                          s=s+'B'
                      elif t2==12:
                          s=s+'C'
                      elif t2==13:
                          s=s+'D'
                      elif t2==14:
                          s=s+'E'
                      elif t2==15:
                          s=s+'F'
                      else:
                          print 'none'
                      
      else:
            t3=m%16
            t4=repr(t3)
            s=s+t4
            m=m/16
   
      p=s[::-1]
      z.write((p)+",")
    
      
"""Take the input from file and producing the results"""     
f=open("c:\inputs\in5_6.txt","r")
z=open("out_16_sec5_6.txt",'w')
str=f.readlines()
sum=0
for i in range(len(str)):
    a=str[i]
    b=a.split(',')
    x=int(b[0])
    y=int(b[1])
    if x>y:
        diff=x-y
    else:
        diff=y-x
    if x<=y:
        while x<=y:
            oc_to_deci(x)
            x=x+1
    else:
        while y>=x:
            oc_to_dec1(y)
            y=y-1
    z.write("\n")     
    sum=sum+2*(diff)    
z.write("additions=")
z.write(repr(sum)+"\n")
t1=time.clock()
t2=t1-t0
mem=sys.getsizeof(a)+sys.getsizeof(b)+264
z.write("time=")
z.write(repr(t2)+"\n")
z.write('memory uded:=')
z.write(repr(mem))
z.close()