A, B, C, and D are playing a chess game, and every two players will play a game. Rules: 2 points for a win, 1 point for a tie, and no points for a loss. A, B, and C get 10 points in total, how many points does D get?
甲乙丙丁进行象棋比赛，每两人之间都要赛一盘．规定：胜一盘得2分，平一盘各得1分，输一盘不得分．甲乙丙共得10分，丁得多少分．
<gadget id="calculator">2 * 6</gadget>
<output>12</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>2</result>