In a chess game, every two players have to play a game, the winner gets 2 points, the draw gets 1 point each, and the loser gets 0 points. Five students have counted the total scores of all the players, which are 551, 552, 553, 554, and 555, but only one of the statistics is correct, so how many players participated in the competition?
在一次国际象棋的比赛中，每两个人都要赛一场，胜者得2分，平局两人各得1分，负者得0分．现有五位同学统计了全部选手的总分，分别是551，552，553，554，555，但只有一个统计是正确的，则共有多少选手参赛．
<result>24</result>