import os
aver =0
while aver != 6 and aver <7:
   print("1 cesar")
   print("2 atash")
   print("3 rot13")
   print("4 cesar")
   print("5 vigenere")
   print("6 salir")
   aver=int(input("Seleciona tu opcion "))
   if aver == 1:  
       os.system("python 1.py")
   if aver == 2:  
       os.system("python 2.py")
   if aver == 3:  
      os.system("python 3.py")

   if aver == 4:  
       os.system("python  4.py")
   if aver == 5:  
       os.system("python 5.py")
   
