The Quiz Competition

There is a quiz competition going on BDIT. There are $N$ participants $1$ to $N$. Initially, all are with $K$ points. When a player correctly answers a question each of the other player $1$ to $N$ receives $-1$ points.except for the player who gives the correct answer. There is no other factor that affects the players' scores. At last the players with less than or equal to $0$ points eli