# usa=['atlanta','new york','chicago','baltimore']
# uk=['london','bristol','cambridge']
# india=['mumbai','delhi','bengaluru']
# city1=input("enter city: ")
# city2=input('enter city: ')
# if city1 in usa and city2 in usa:
#     print('USA')
# elif city1 in uk and city2 in uk:
#     print("uK")
# elif city1 in india and city2 in india:
#     print("india")
# else:
#     print('invalid')
x=input('enter the number')
