class charClass :
a = ["Seoul", "Inchon", "Kyonggi", "Daejun", "Daegu", "Pusan"]
myVal = charClass()
str01 = ''
for i in myVal.a:
str01 = str01 + i[0]
print(str01)
Y2xhc3MgY2hhckNsYXNzIDoKICBhID0gWyJTZW91bCIsICJJbmNob24iLCAiS3lvbmdnaSIsICJEYWVqdW4iLCAiRGFlZ3UiLCAiUHVzYW4iXQpteVZhbCA9IGNoYXJDbGFzcygpCnN0cjAxID0gJycKZm9yIGkgaW4gbXlWYWwuYToKICBzdHIwMSA9IHN0cjAxICsgaVswXQpwcmludChzdHIwMSk=