test1里的例子是用来计算领先选手排行榜(Leaderboard)上的分数：track1的RMSE和Track2的错误率(Error rate)。

Examples in Test1 are used for calculating the scores shown on the Leaderboard: RMSE for Track1 and Error rate for Track2.

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每条蛇包含一个启动按钮，一个积分板以及登记前三名玩家分数的排行榜。

Each Snake includes a start button, a scoreboard and a leaderboard that records the top 3 scores.

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