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Find the Number of Winning Players

You are given an integer n representing the number of players in a game and a 2D array pick where pick[i] = [xi, yi] represents that the player xi picked a ball of color yi.

You are given an integer n representing the number of players in a game and a 2D array pick where pick[i] = [xi, yi] represents that the player xi picked a ball of color yi.

Player i wins the game if they pick strictly more than i balls of the same color. In other words,

Return the number of players who win the game.

Note that multiple players can win the game.

Example 1

Input: n = 4, pick = [[0,0],[1,0],[1,0],[2,1],[2,1],[2,0]]

Output: 2

Explanation: Player 0 and player 1 win the game, while players 2 and 3 do not win.

Example 2

Input: n = 5, pick = [[1,1],[1,2],[1,3],[1,4]]

Output: 0

Explanation: No player wins the game.

Example 3

Input: n = 5, pick = [[1,1],[2,4],[2,4],[2,4]]

Output: 1

Explanation: Player 2 wins the game by picking 3 balls with color 4.

Constraints

  • 2 <= n <= 10
  • 1 <= pick.length <= 100
  • pick[i].length == 2
  • 0 <= xi <= n - 1
  • 0 <= yi <= 10

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