How do I solve this question without exceeding the time complexity? Using Java not C. Thanks.

Problem A Card Trading Anthony and Cora are playing Dominion, their favorite card game. In Dominion, there are T different card types, and each player has a set of cards (known as a deck). A deck D is said to have combas if C is the largest integer such that for different card types in the game, D contains at least two cards of that type. Anthony currently has N cards and he wants to trade cards with Cora such that he'll have a deck with exactly K combos. For each card type i (1