def panteautomat(a, b):
    pant_liten = 2
    pant_stor = 3
    return a * pant_liten + b * pant_stor

smaa_flasker =  12

for store_flasker in range(5, 23+1, 2):
    print("Panten blir", panteautomat(smaa_flasker, store_flasker),
          "kr")