Statement

Sick of losing every lottery he participates in, Giorgio decided to stop relying on chance… and instead relying on a seer to find his lucky number once and for all! However, unexpectedly, the old witch found that Giorgio has actually a whopping K lucky numbers, each of them 4-digits long. Thrilled by this unexpected news, Giorgio can't wait to buy a lottery ticket… but he wants the luckiest one! Given that the serial number of lottery tickets are C-digits long, find out the one with the highest amount of lucky numbers in it.