import sys

def tarkistus(merkkijono):
    if len(merkkijono) != 4:
        print "Use 4 symbols!"
        return False

    else:
        for i in range(4):
            if merkkijono[i] not in "123456":
                print "Invalid symbol! Use numbers between 1-6!"
                return False
        return True

if len(sys.argv) == 1:
    print "Give secret code"
    sys.exit()


koodi  = sys.argv[1]


if tarkistus(koodi) == True:
    while True:
        arvaus = raw_input("Give guess: ")

        if arvaus == koodi:
            print "You win!"
            print "the correct answer was", koodi
            break

        elif tarkistus(arvaus) == True:

            for i in range(4):
                if koodi[i] == arvaus[i]:
                    print "Symbol in correct position"
                elif arvaus[i] in koodi:
                    print "Correct symbol"